// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
/*
 * (C) Copyright 2016-2017 Rockchip Inc.
 *
 * Adapted from coreboot.
 */

#include <common.h>
#include <clk.h>
#include <dm.h>
#include <dt-structs.h>
#include <init.h>
#include <log.h>
#include <ram.h>
#include <regmap.h>
#include <syscon.h>
#include <asm/io.h>
#include <asm/arch-rockchip/clock.h>
#include <asm/arch-rockchip/cru.h>
#include <asm/arch-rockchip/grf_rk3399.h>
#include <asm/arch-rockchip/pmu_rk3399.h>
#include <asm/arch-rockchip/hardware.h>
#include <asm/arch-rockchip/sdram.h>
#include <asm/arch-rockchip/sdram_rk3399.h>
#include <linux/delay.h>
#include <linux/err.h>
#include <time.h>

#define PRESET_SGRF_HOLD(n)     ((0x1 << (6 + 16)) | ((n) << 6))
#define PRESET_GPIO0_HOLD(n)    ((0x1 << (7 + 16)) | ((n) << 7))
#define PRESET_GPIO1_HOLD(n)    ((0x1 << (8 + 16)) | ((n) << 8))

#define PHY_DRV_ODT_HI_Z        0x0
#define PHY_DRV_ODT_240         0x1
#define PHY_DRV_ODT_120         0x8
#define PHY_DRV_ODT_80          0x9
#define PHY_DRV_ODT_60          0xc
#define PHY_DRV_ODT_48          0xd
#define PHY_DRV_ODT_40          0xe
#define PHY_DRV_ODT_34_3        0xf

#define PHY_BOOSTP_EN           0x1
#define PHY_BOOSTN_EN           0x1
#define PHY_SLEWP_EN            0x1
#define PHY_SLEWN_EN            0x1
#define PHY_RX_CM_INPUT         0x1
#define CS0_MR22_VAL            0
#define CS1_MR22_VAL            3

/* LPDDR3 DRAM DS */
#define LPDDR3_DS_34            0x1
#define LPDDR3_DS_40            0x2
#define LPDDR3_DS_48            0x3

#define CRU_SFTRST_DDR_CTRL(ch, n)      ((0x1 << (8 + 16 + (ch) * 4)) | \
                                        ((n) << (8 + (ch) * 4)))
#define CRU_SFTRST_DDR_PHY(ch, n)       ((0x1 << (9 + 16 + (ch) * 4)) | \
                                        ((n) << (9 + (ch) * 4)))
struct chan_info {
        struct rk3399_ddr_pctl_regs *pctl;
        struct rk3399_ddr_pi_regs *pi;
        struct rk3399_ddr_publ_regs *publ;
        struct msch_regs *msch;
};

struct dram_info {
#if defined(CONFIG_TPL_BUILD) || \
        (!defined(CONFIG_TPL) && defined(CONFIG_SPL_BUILD))
        u32 pwrup_srefresh_exit[2];
        struct chan_info chan[2];
        struct clk ddr_clk;
        struct rockchip_cru *cru;
        struct rk3399_grf_regs *grf;
        struct rk3399_pmu_regs *pmu;
        struct rk3399_pmucru *pmucru;
        struct rk3399_pmusgrf_regs *pmusgrf;
        struct rk3399_ddr_cic_regs *cic;
        const struct sdram_rk3399_ops *ops;
#endif
        struct ram_info info;
        struct rk3399_pmugrf_regs *pmugrf;
};

struct sdram_rk3399_ops {
        int (*data_training_first)(struct dram_info *dram, u32 channel, u8 rank,
                                   struct rk3399_sdram_params *sdram);
        int (*set_rate_index)(struct dram_info *dram,
                              struct rk3399_sdram_params *params, u32 ctl_fn);
        void (*modify_param)(const struct chan_info *chan,
                             struct rk3399_sdram_params *params);
        struct rk3399_sdram_params *
                (*get_phy_index_params)(u32 phy_fn,
                                        struct rk3399_sdram_params *params);
};

#if defined(CONFIG_TPL_BUILD) || \
        (!defined(CONFIG_TPL) && defined(CONFIG_SPL_BUILD))

struct rockchip_dmc_plat {
#if CONFIG_IS_ENABLED(OF_PLATDATA)
        struct dtd_rockchip_rk3399_dmc dtplat;
#else
        struct rk3399_sdram_params sdram_params;
#endif
        struct regmap *map;
};

struct io_setting {
        u32 mhz;
        u32 mr5;
        /* dram side */
        u32 dq_odt;
        u32 ca_odt;
        u32 pdds;
        u32 dq_vref;
        u32 ca_vref;
        /* phy side */
        u32 rd_odt;
        u32 wr_dq_drv;
        u32 wr_ca_drv;
        u32 wr_ckcs_drv;
        u32 rd_odt_en;
        u32 rd_vref;
} lpddr4_io_setting[] = {
        {
                50 * MHz,
                0,
                /* dram side */
                0,      /* dq_odt; */
                0,      /* ca_odt; */
                6,      /* pdds; */
                0x72,   /* dq_vref; */
                0x72,   /* ca_vref; */
                /* phy side */
                PHY_DRV_ODT_HI_Z,       /* rd_odt; */
                PHY_DRV_ODT_40, /* wr_dq_drv; */
                PHY_DRV_ODT_40, /* wr_ca_drv; */
                PHY_DRV_ODT_40, /* wr_ckcs_drv; */
                0,      /* rd_odt_en;*/
                41,     /* rd_vref; (unit %, range 3.3% - 48.7%) */
        },
        {
                600 * MHz,
                0,
                /* dram side */
                1,      /* dq_odt; */
                0,      /* ca_odt; */
                6,      /* pdds; */
                0x72,   /* dq_vref; */
                0x72,   /* ca_vref; */
                /* phy side */
                PHY_DRV_ODT_HI_Z,       /* rd_odt; */
                PHY_DRV_ODT_48, /* wr_dq_drv; */
                PHY_DRV_ODT_40, /* wr_ca_drv; */
                PHY_DRV_ODT_40, /* wr_ckcs_drv; */
                0,      /* rd_odt_en; */
                32,     /* rd_vref; (unit %, range 3.3% - 48.7%) */
        },
        {
                933 * MHz,
                0,
                /* dram side */
                1,      /* dq_odt; */
                0,      /* ca_odt; */
                3,      /* pdds; */
                0x72,   /* dq_vref; */
                0x72,   /* ca_vref; */
                /* phy side */
                PHY_DRV_ODT_80, /* rd_odt; */
                PHY_DRV_ODT_40, /* wr_dq_drv; */
                PHY_DRV_ODT_40, /* wr_ca_drv; */
                PHY_DRV_ODT_40, /* wr_ckcs_drv; */
                1,      /* rd_odt_en; */
                20,     /* rd_vref; (unit %, range 3.3% - 48.7%) */
        },
        {
                1066 * MHz,
                0,
                /* dram side */
                6,      /* dq_odt; */
                0,      /* ca_odt; */
                3,      /* pdds; */
                0x10,   /* dq_vref; */
                0x72,   /* ca_vref; */
                /* phy side */
                PHY_DRV_ODT_80, /* rd_odt; */
                PHY_DRV_ODT_60, /* wr_dq_drv; */
                PHY_DRV_ODT_40, /* wr_ca_drv; */
                PHY_DRV_ODT_40, /* wr_ckcs_drv; */
                1,      /* rd_odt_en; */
                20,     /* rd_vref; (unit %, range 3.3% - 48.7%) */
        },
};

static struct io_setting *
lpddr4_get_io_settings(const struct rk3399_sdram_params *params, u32 mr5)
{
        struct io_setting *io = NULL;
        u32 n;

        for (n = 0; n < ARRAY_SIZE(lpddr4_io_setting); n++) {
                io = &lpddr4_io_setting[n];

                if (io->mr5 != 0) {
                        if (io->mhz >= params->base.ddr_freq &&
                            io->mr5 == mr5)
                                break;
                } else {
                        if (io->mhz >= params->base.ddr_freq)
                                break;
                }
        }

        return io;
}

static void *get_denali_ctl(const struct chan_info *chan,
                            struct rk3399_sdram_params *params, bool reg)
{
        return reg ? &chan->pctl->denali_ctl : &params->pctl_regs.denali_ctl;
}

static void *get_denali_phy(const struct chan_info *chan,
                            struct rk3399_sdram_params *params, bool reg)
{
        return reg ? &chan->publ->denali_phy : &params->phy_regs.denali_phy;
}

static void *get_ddrc0_con(struct dram_info *dram, u8 channel)
{
        return (channel == 0) ? &dram->grf->ddrc0_con0 : &dram->grf->ddrc1_con0;
}

static void rkclk_ddr_reset(struct rockchip_cru *cru, u32 channel, u32 ctl,
                            u32 phy)
{
        channel &= 0x1;
        ctl &= 0x1;
        phy &= 0x1;
        writel(CRU_SFTRST_DDR_CTRL(channel, ctl) |
                                   CRU_SFTRST_DDR_PHY(channel, phy),
                                   &cru->softrst_con[4]);
}

static void phy_pctrl_reset(struct rockchip_cru *cru,  u32 channel)
{
        rkclk_ddr_reset(cru, channel, 1, 1);
        udelay(10);

        rkclk_ddr_reset(cru, channel, 1, 0);
        udelay(10);

        rkclk_ddr_reset(cru, channel, 0, 0);
        udelay(10);
}

static void phy_dll_bypass_set(struct rk3399_ddr_publ_regs *ddr_publ_regs,
                               u32 freq)
{
        u32 *denali_phy = ddr_publ_regs->denali_phy;

        /* From IP spec, only freq small than 125 can enter dll bypass mode */
        if (freq <= 125) {
                /* phy_sw_master_mode_X PHY_86/214/342/470 4bits offset_8 */
                setbits_le32(&denali_phy[86], (0x3 << 2) << 8);
                setbits_le32(&denali_phy[214], (0x3 << 2) << 8);
                setbits_le32(&denali_phy[342], (0x3 << 2) << 8);
                setbits_le32(&denali_phy[470], (0x3 << 2) << 8);

                /* phy_adrctl_sw_master_mode PHY_547/675/803 4bits offset_16 */
                setbits_le32(&denali_phy[547], (0x3 << 2) << 16);
                setbits_le32(&denali_phy[675], (0x3 << 2) << 16);
                setbits_le32(&denali_phy[803], (0x3 << 2) << 16);
        } else {
                /* phy_sw_master_mode_X PHY_86/214/342/470 4bits offset_8 */
                clrbits_le32(&denali_phy[86], (0x3 << 2) << 8);
                clrbits_le32(&denali_phy[214], (0x3 << 2) << 8);
                clrbits_le32(&denali_phy[342], (0x3 << 2) << 8);
                clrbits_le32(&denali_phy[470], (0x3 << 2) << 8);

                /* phy_adrctl_sw_master_mode PHY_547/675/803 4bits offset_16 */
                clrbits_le32(&denali_phy[547], (0x3 << 2) << 16);
                clrbits_le32(&denali_phy[675], (0x3 << 2) << 16);
                clrbits_le32(&denali_phy[803], (0x3 << 2) << 16);
        }
}

static void set_memory_map(const struct chan_info *chan, u32 channel,
                           const struct rk3399_sdram_params *params)
{
        const struct rk3399_sdram_channel *sdram_ch = &params->ch[channel];
        u32 *denali_ctl = chan->pctl->denali_ctl;
        u32 *denali_pi = chan->pi->denali_pi;
        u32 cs_map;
        u32 reduc;
        u32 row;

        /* Get row number from ddrconfig setting */
        if (sdram_ch->cap_info.ddrconfig < 2 ||
            sdram_ch->cap_info.ddrconfig == 4)
                row = 16;
        else if (sdram_ch->cap_info.ddrconfig == 3 ||
                 sdram_ch->cap_info.ddrconfig == 5)
                row = 14;
        else
                row = 15;

        cs_map = (sdram_ch->cap_info.rank > 1) ? 3 : 1;
        reduc = (sdram_ch->cap_info.bw == 2) ? 0 : 1;

        /* Set the dram configuration to ctrl */
        clrsetbits_le32(&denali_ctl[191], 0xF, (12 - sdram_ch->cap_info.col));
        clrsetbits_le32(&denali_ctl[190], (0x3 << 16) | (0x7 << 24),
                        ((3 - sdram_ch->cap_info.bk) << 16) |
                        ((16 - row) << 24));

        clrsetbits_le32(&denali_ctl[196], 0x3 | (1 << 16),
                        cs_map | (reduc << 16));

        /* PI_199 PI_COL_DIFF:RW:0:4 */
        clrsetbits_le32(&denali_pi[199], 0xF, (12 - sdram_ch->cap_info.col));

        /* PI_155 PI_ROW_DIFF:RW:24:3 PI_BANK_DIFF:RW:16:2 */
        clrsetbits_le32(&denali_pi[155], (0x3 << 16) | (0x7 << 24),
                        ((3 - sdram_ch->cap_info.bk) << 16) |
                        ((16 - row) << 24));

        if (params->base.dramtype == LPDDR4) {
                if (cs_map == 1)
                        cs_map = 0x5;
                else if (cs_map == 2)
                        cs_map = 0xa;
                else
                        cs_map = 0xF;
        }

        /* PI_41 PI_CS_MAP:RW:24:4 */
        clrsetbits_le32(&denali_pi[41], 0xf << 24, cs_map << 24);
        if (sdram_ch->cap_info.rank == 1 && params->base.dramtype == DDR3)
                writel(0x2EC7FFFF, &denali_pi[34]);
}

static int phy_io_config(u32 *denali_phy, u32 *denali_ctl,
                         const struct rk3399_sdram_params *params, u32 mr5)
{
        u32 vref_mode_dq, vref_value_dq, vref_mode_ac, vref_value_ac;
        u32 mode_sel;
        u32 speed;
        u32 reg_value;
        u32 ds_value, odt_value;

        /* vref setting & mode setting */
        if (params->base.dramtype == LPDDR4) {
                struct io_setting *io = lpddr4_get_io_settings(params, mr5);
                u32 rd_vref = io->rd_vref * 1000;

                if (rd_vref < 36700) {
                        /* MODE_LV[2:0] = LPDDR4 (Range 2)*/
                        vref_mode_dq = 0x7;
                        /* MODE[2:0]= LPDDR4 Range 2(0.4*VDDQ) */
                        mode_sel = 0x5;
                        vref_value_dq = (rd_vref - 3300) / 521;
                } else {
                        /* MODE_LV[2:0] = LPDDR4 (Range 1)*/
                        vref_mode_dq = 0x6;
                        /* MODE[2:0]= LPDDR4 Range 1(0.33*VDDQ) */
                        mode_sel = 0x4;
                        vref_value_dq = (rd_vref - 15300) / 521;
                }
                vref_mode_ac = 0x6;
                /* VDDQ/3/2=16.8% */
                vref_value_ac = 0x3;
        } else if (params->base.dramtype == LPDDR3) {
                if (params->base.odt == 1) {
                        vref_mode_dq = 0x5;  /* LPDDR3 ODT */
                        ds_value = readl(&denali_ctl[138]) & 0xf;
                        odt_value = (readl(&denali_phy[6]) >> 4) & 0xf;
                        if (ds_value == LPDDR3_DS_48) {
                                switch (odt_value) {
                                case PHY_DRV_ODT_240:
                                        vref_value_dq = 0x1B;
                                        break;
                                case PHY_DRV_ODT_120:
                                        vref_value_dq = 0x26;
                                        break;
                                case PHY_DRV_ODT_60:
                                        vref_value_dq = 0x36;
                                        break;
                                default:
                                        debug("Invalid ODT value.\n");
                                        return -EINVAL;
                                }
                        } else if (ds_value == LPDDR3_DS_40) {
                                switch (odt_value) {
                                case PHY_DRV_ODT_240:
                                        vref_value_dq = 0x19;
                                        break;
                                case PHY_DRV_ODT_120:
                                        vref_value_dq = 0x23;
                                        break;
                                case PHY_DRV_ODT_60:
                                        vref_value_dq = 0x31;
                                        break;
                                default:
                                        debug("Invalid ODT value.\n");
                                        return -EINVAL;
                                }
                        } else if (ds_value == LPDDR3_DS_34) {
                                switch (odt_value) {
                                case PHY_DRV_ODT_240:
                                        vref_value_dq = 0x17;
                                        break;
                                case PHY_DRV_ODT_120:
                                        vref_value_dq = 0x20;
                                        break;
                                case PHY_DRV_ODT_60:
                                        vref_value_dq = 0x2e;
                                        break;
                                default:
                                        debug("Invalid ODT value.\n");
                                        return -EINVAL;
                                }
                        } else {
                                debug("Invalid DRV value.\n");
                                return -EINVAL;
                        }
                } else {
                        vref_mode_dq = 0x2;  /* LPDDR3 */
                        vref_value_dq = 0x1f;
                }
                vref_mode_ac = 0x2;
                vref_value_ac = 0x1f;
                mode_sel = 0x0;
        } else if (params->base.dramtype == DDR3) {
                /* DDR3L */
                vref_mode_dq = 0x1;
                vref_value_dq = 0x1f;
                vref_mode_ac = 0x1;
                vref_value_ac = 0x1f;
                mode_sel = 0x1;
        } else {
                debug("Unknown DRAM type.\n");
                return -EINVAL;
        }

        reg_value = (vref_mode_dq << 9) | (0x1 << 8) | vref_value_dq;

        /* PHY_913 PHY_PAD_VREF_CTRL_DQ_0 12bits offset_8 */
        clrsetbits_le32(&denali_phy[913], 0xfff << 8, reg_value << 8);
        /* PHY_914 PHY_PAD_VREF_CTRL_DQ_1 12bits offset_0 */
        clrsetbits_le32(&denali_phy[914], 0xfff, reg_value);
        /* PHY_914 PHY_PAD_VREF_CTRL_DQ_2 12bits offset_16 */
        clrsetbits_le32(&denali_phy[914], 0xfff << 16, reg_value << 16);
        /* PHY_915 PHY_PAD_VREF_CTRL_DQ_3 12bits offset_0 */
        clrsetbits_le32(&denali_phy[915], 0xfff, reg_value);

        reg_value = (vref_mode_ac << 9) | (0x1 << 8) | vref_value_ac;

        /* PHY_915 PHY_PAD_VREF_CTRL_AC 12bits offset_16 */
        clrsetbits_le32(&denali_phy[915], 0xfff << 16, reg_value << 16);

        /* PHY_924 PHY_PAD_FDBK_DRIVE */
        clrsetbits_le32(&denali_phy[924], 0x7 << 15, mode_sel << 15);
        /* PHY_926 PHY_PAD_DATA_DRIVE */
        clrsetbits_le32(&denali_phy[926], 0x7 << 6, mode_sel << 6);
        /* PHY_927 PHY_PAD_DQS_DRIVE */
        clrsetbits_le32(&denali_phy[927], 0x7 << 6, mode_sel << 6);
        /* PHY_928 PHY_PAD_ADDR_DRIVE */
        clrsetbits_le32(&denali_phy[928], 0x7 << 14, mode_sel << 14);
        /* PHY_929 PHY_PAD_CLK_DRIVE */
        clrsetbits_le32(&denali_phy[929], 0x7 << 14, mode_sel << 14);
        /* PHY_935 PHY_PAD_CKE_DRIVE */
        clrsetbits_le32(&denali_phy[935], 0x7 << 14, mode_sel << 14);
        /* PHY_937 PHY_PAD_RST_DRIVE */
        clrsetbits_le32(&denali_phy[937], 0x7 << 14, mode_sel << 14);
        /* PHY_939 PHY_PAD_CS_DRIVE */
        clrsetbits_le32(&denali_phy[939], 0x7 << 14, mode_sel << 14);

        if (params->base.dramtype == LPDDR4) {
                /* BOOSTP_EN & BOOSTN_EN */
                reg_value = ((PHY_BOOSTP_EN << 4) | PHY_BOOSTN_EN);
                /* PHY_925 PHY_PAD_FDBK_DRIVE2 */
                clrsetbits_le32(&denali_phy[925], 0xff << 8, reg_value << 8);
                /* PHY_926 PHY_PAD_DATA_DRIVE */
                clrsetbits_le32(&denali_phy[926], 0xff << 12, reg_value << 12);
                /* PHY_927 PHY_PAD_DQS_DRIVE */
                clrsetbits_le32(&denali_phy[927], 0xff << 14, reg_value << 14);
                /* PHY_928 PHY_PAD_ADDR_DRIVE */
                clrsetbits_le32(&denali_phy[928], 0xff << 20, reg_value << 20);
                /* PHY_929 PHY_PAD_CLK_DRIVE */
                clrsetbits_le32(&denali_phy[929], 0xff << 22, reg_value << 22);
                /* PHY_935 PHY_PAD_CKE_DRIVE */
                clrsetbits_le32(&denali_phy[935], 0xff << 20, reg_value << 20);
                /* PHY_937 PHY_PAD_RST_DRIVE */
                clrsetbits_le32(&denali_phy[937], 0xff << 20, reg_value << 20);
                /* PHY_939 PHY_PAD_CS_DRIVE */
                clrsetbits_le32(&denali_phy[939], 0xff << 20, reg_value << 20);

                /* SLEWP_EN & SLEWN_EN */
                reg_value = ((PHY_SLEWP_EN << 3) | PHY_SLEWN_EN);
                /* PHY_924 PHY_PAD_FDBK_DRIVE */
                clrsetbits_le32(&denali_phy[924], 0x3f << 8, reg_value << 8);
                /* PHY_926 PHY_PAD_DATA_DRIVE */
                clrsetbits_le32(&denali_phy[926], 0x3f, reg_value);
                /* PHY_927 PHY_PAD_DQS_DRIVE */
                clrsetbits_le32(&denali_phy[927], 0x3f, reg_value);
                /* PHY_928 PHY_PAD_ADDR_DRIVE */
                clrsetbits_le32(&denali_phy[928], 0x3f << 8, reg_value << 8);
                /* PHY_929 PHY_PAD_CLK_DRIVE */
                clrsetbits_le32(&denali_phy[929], 0x3f << 8, reg_value << 8);
                /* PHY_935 PHY_PAD_CKE_DRIVE */
                clrsetbits_le32(&denali_phy[935], 0x3f << 8, reg_value << 8);
                /* PHY_937 PHY_PAD_RST_DRIVE */
                clrsetbits_le32(&denali_phy[937], 0x3f << 8, reg_value << 8);
                /* PHY_939 PHY_PAD_CS_DRIVE */
                clrsetbits_le32(&denali_phy[939], 0x3f << 8, reg_value << 8);
        }

        /* speed setting */
        speed = 0x2;

        /* PHY_924 PHY_PAD_FDBK_DRIVE */
        clrsetbits_le32(&denali_phy[924], 0x3 << 21, speed << 21);
        /* PHY_926 PHY_PAD_DATA_DRIVE */
        clrsetbits_le32(&denali_phy[926], 0x3 << 9, speed << 9);
        /* PHY_927 PHY_PAD_DQS_DRIVE */
        clrsetbits_le32(&denali_phy[927], 0x3 << 9, speed << 9);
        /* PHY_928 PHY_PAD_ADDR_DRIVE */
        clrsetbits_le32(&denali_phy[928], 0x3 << 17, speed << 17);
        /* PHY_929 PHY_PAD_CLK_DRIVE */
        clrsetbits_le32(&denali_phy[929], 0x3 << 17, speed << 17);
        /* PHY_935 PHY_PAD_CKE_DRIVE */
        clrsetbits_le32(&denali_phy[935], 0x3 << 17, speed << 17);
        /* PHY_937 PHY_PAD_RST_DRIVE */
        clrsetbits_le32(&denali_phy[937], 0x3 << 17, speed << 17);
        /* PHY_939 PHY_PAD_CS_DRIVE */
        clrsetbits_le32(&denali_phy[939], 0x3 << 17, speed << 17);

        if (params->base.dramtype == LPDDR4) {
                /* RX_CM_INPUT */
                reg_value = PHY_RX_CM_INPUT;
                /* PHY_924 PHY_PAD_FDBK_DRIVE */
                clrsetbits_le32(&denali_phy[924], 0x1 << 14, reg_value << 14);
                /* PHY_926 PHY_PAD_DATA_DRIVE */
                clrsetbits_le32(&denali_phy[926], 0x1 << 11, reg_value << 11);
                /* PHY_927 PHY_PAD_DQS_DRIVE */
                clrsetbits_le32(&denali_phy[927], 0x1 << 13, reg_value << 13);
                /* PHY_928 PHY_PAD_ADDR_DRIVE */
                clrsetbits_le32(&denali_phy[928], 0x1 << 19, reg_value << 19);
                /* PHY_929 PHY_PAD_CLK_DRIVE */
                clrsetbits_le32(&denali_phy[929], 0x1 << 21, reg_value << 21);
                /* PHY_935 PHY_PAD_CKE_DRIVE */
                clrsetbits_le32(&denali_phy[935], 0x1 << 19, reg_value << 19);
                /* PHY_937 PHY_PAD_RST_DRIVE */
                clrsetbits_le32(&denali_phy[937], 0x1 << 19, reg_value << 19);
                /* PHY_939 PHY_PAD_CS_DRIVE */
                clrsetbits_le32(&denali_phy[939], 0x1 << 19, reg_value << 19);
        }

        return 0;
}

static void set_ds_odt(const struct chan_info *chan,
                       struct rk3399_sdram_params *params,
                       bool ctl_phy_reg, u32 mr5)
{
        u32 *denali_phy = get_denali_phy(chan, params, ctl_phy_reg);
        u32 *denali_ctl = get_denali_ctl(chan, params, ctl_phy_reg);
        u32 tsel_idle_en, tsel_wr_en, tsel_rd_en;
        u32 tsel_idle_select_p, tsel_rd_select_p;
        u32 tsel_idle_select_n, tsel_rd_select_n;
        u32 tsel_wr_select_dq_p, tsel_wr_select_ca_p;
        u32 tsel_wr_select_dq_n, tsel_wr_select_ca_n;
        u32 tsel_ckcs_select_p, tsel_ckcs_select_n;
        struct io_setting *io = NULL;
        u32 soc_odt = 0;
        u32 reg_value;

        if (params->base.dramtype == LPDDR4) {
                io = lpddr4_get_io_settings(params, mr5);

                tsel_rd_select_p = PHY_DRV_ODT_HI_Z;
                tsel_rd_select_n = io->rd_odt;

                tsel_idle_select_p = PHY_DRV_ODT_HI_Z;
                tsel_idle_select_n = PHY_DRV_ODT_HI_Z;

                tsel_wr_select_dq_p = io->wr_dq_drv;
                tsel_wr_select_dq_n = PHY_DRV_ODT_34_3;

                tsel_wr_select_ca_p = io->wr_ca_drv;
                tsel_wr_select_ca_n = PHY_DRV_ODT_34_3;

                tsel_ckcs_select_p = io->wr_ckcs_drv;
                tsel_ckcs_select_n = PHY_DRV_ODT_34_3;

                switch (tsel_rd_select_n) {
                case PHY_DRV_ODT_240:
                        soc_odt = 1;
                        break;
                case PHY_DRV_ODT_120:
                        soc_odt = 2;
                        break;
                case PHY_DRV_ODT_80:
                        soc_odt = 3;
                        break;
                case PHY_DRV_ODT_60:
                        soc_odt = 4;
                        break;
                case PHY_DRV_ODT_48:
                        soc_odt = 5;
                        break;
                case PHY_DRV_ODT_40:
                        soc_odt = 6;
                        break;
                case PHY_DRV_ODT_34_3:
                        soc_odt = 6;
                        printf("%s: Unable to support LPDDR4 MR22 Soc ODT\n",
                               __func__);
                        break;
                case PHY_DRV_ODT_HI_Z:
                default:
                        soc_odt = 0;
                        break;
                }
        } else if (params->base.dramtype == LPDDR3) {
                tsel_rd_select_p = PHY_DRV_ODT_240;
                tsel_rd_select_n = PHY_DRV_ODT_HI_Z;

                tsel_idle_select_p = PHY_DRV_ODT_240;
                tsel_idle_select_n = PHY_DRV_ODT_HI_Z;

                tsel_wr_select_dq_p = PHY_DRV_ODT_34_3;
                tsel_wr_select_dq_n = PHY_DRV_ODT_34_3;

                tsel_wr_select_ca_p = PHY_DRV_ODT_34_3;
                tsel_wr_select_ca_n = PHY_DRV_ODT_34_3;

                tsel_ckcs_select_p = PHY_DRV_ODT_34_3;
                tsel_ckcs_select_n = PHY_DRV_ODT_34_3;
        } else {
                tsel_rd_select_p = PHY_DRV_ODT_240;
                tsel_rd_select_n = PHY_DRV_ODT_240;

                tsel_idle_select_p = PHY_DRV_ODT_240;
                tsel_idle_select_n = PHY_DRV_ODT_240;

                tsel_wr_select_dq_p = PHY_DRV_ODT_34_3;
                tsel_wr_select_dq_n = PHY_DRV_ODT_34_3;

                tsel_wr_select_ca_p = PHY_DRV_ODT_34_3;
                tsel_wr_select_ca_n = PHY_DRV_ODT_34_3;

                tsel_ckcs_select_p = PHY_DRV_ODT_34_3;
                tsel_ckcs_select_n = PHY_DRV_ODT_34_3;
        }

        if (params->base.odt == 1) {
                tsel_rd_en = 1;

                if (params->base.dramtype == LPDDR4)
                        tsel_rd_en = io->rd_odt_en;
        } else {
                tsel_rd_en = 0;
        }

        tsel_wr_en = 0;
        tsel_idle_en = 0;

        /* F0_0 */
        clrsetbits_le32(&denali_ctl[145], 0xFF << 16,
                        (soc_odt | (CS0_MR22_VAL << 3)) << 16);
        /* F2_0, F1_0 */
        clrsetbits_le32(&denali_ctl[146], 0xFF00FF,
                        ((soc_odt | (CS0_MR22_VAL << 3)) << 16) |
                        (soc_odt | (CS0_MR22_VAL << 3)));
        /* F0_1 */
        clrsetbits_le32(&denali_ctl[159], 0xFF << 16,
                        (soc_odt | (CS1_MR22_VAL << 3)) << 16);
        /* F2_1, F1_1 */
        clrsetbits_le32(&denali_ctl[160], 0xFF00FF,
                        ((soc_odt | (CS1_MR22_VAL << 3)) << 16) |
                        (soc_odt | (CS1_MR22_VAL << 3)));

        /*
         * phy_dq_tsel_select_X 24bits DENALI_PHY_6/134/262/390 offset_0
         * sets termination values for read/idle cycles and drive strength
         * for write cycles for DQ/DM
         */
        reg_value = tsel_rd_select_n | (tsel_rd_select_p << 0x4) |
                    (tsel_wr_select_dq_n << 8) | (tsel_wr_select_dq_p << 12) |
                    (tsel_idle_select_n << 16) | (tsel_idle_select_p << 20);
        clrsetbits_le32(&denali_phy[6], 0xffffff, reg_value);
        clrsetbits_le32(&denali_phy[134], 0xffffff, reg_value);
        clrsetbits_le32(&denali_phy[262], 0xffffff, reg_value);
        clrsetbits_le32(&denali_phy[390], 0xffffff, reg_value);

        /*
         * phy_dqs_tsel_select_X 24bits DENALI_PHY_7/135/263/391 offset_0
         * sets termination values for read/idle cycles and drive strength
         * for write cycles for DQS
         */
        clrsetbits_le32(&denali_phy[7], 0xffffff, reg_value);
        clrsetbits_le32(&denali_phy[135], 0xffffff, reg_value);
        clrsetbits_le32(&denali_phy[263], 0xffffff, reg_value);
        clrsetbits_le32(&denali_phy[391], 0xffffff, reg_value);

        /* phy_adr_tsel_select_ 8bits DENALI_PHY_544/672/800 offset_0 */
        reg_value = tsel_wr_select_ca_n | (tsel_wr_select_ca_p << 0x4);
        if (params->base.dramtype == LPDDR4) {
                /* LPDDR4 these register read always return 0, so
                 * can not use clrsetbits_le32(), need to write32
                 */
                writel((0x300 << 8) | reg_value, &denali_phy[544]);
                writel((0x300 << 8) | reg_value, &denali_phy[672]);
                writel((0x300 << 8) | reg_value, &denali_phy[800]);
        } else {
                clrsetbits_le32(&denali_phy[544], 0xff, reg_value);
                clrsetbits_le32(&denali_phy[672], 0xff, reg_value);
                clrsetbits_le32(&denali_phy[800], 0xff, reg_value);
        }

        /* phy_pad_addr_drive 8bits DENALI_PHY_928 offset_0 */
        clrsetbits_le32(&denali_phy[928], 0xff, reg_value);

        /* phy_pad_rst_drive 8bits DENALI_PHY_937 offset_0 */
        if (!ctl_phy_reg)
                clrsetbits_le32(&denali_phy[937], 0xff, reg_value);

        /* phy_pad_cke_drive 8bits DENALI_PHY_935 offset_0 */
        clrsetbits_le32(&denali_phy[935], 0xff, reg_value);

        /* phy_pad_cs_drive 8bits DENALI_PHY_939 offset_0 */
        clrsetbits_le32(&denali_phy[939], 0xff,
                        tsel_ckcs_select_n | (tsel_ckcs_select_p << 0x4));

        /* phy_pad_clk_drive 8bits DENALI_PHY_929 offset_0 */
        clrsetbits_le32(&denali_phy[929], 0xff,
                        tsel_ckcs_select_n | (tsel_ckcs_select_p << 0x4));

        /* phy_pad_fdbk_drive 23bit DENALI_PHY_924/925 */
        clrsetbits_le32(&denali_phy[924], 0xff,
                        tsel_wr_select_ca_n | (tsel_wr_select_ca_p << 4));
        clrsetbits_le32(&denali_phy[925], 0xff,
                        tsel_wr_select_dq_n | (tsel_wr_select_dq_p << 4));

        /* phy_dq_tsel_enable_X 3bits DENALI_PHY_5/133/261/389 offset_16 */
        reg_value = (tsel_rd_en | (tsel_wr_en << 1) | (tsel_idle_en << 2))
                << 16;
        clrsetbits_le32(&denali_phy[5], 0x7 << 16, reg_value);
        clrsetbits_le32(&denali_phy[133], 0x7 << 16, reg_value);
        clrsetbits_le32(&denali_phy[261], 0x7 << 16, reg_value);
        clrsetbits_le32(&denali_phy[389], 0x7 << 16, reg_value);

        /* phy_dqs_tsel_enable_X 3bits DENALI_PHY_6/134/262/390 offset_24 */
        reg_value = (tsel_rd_en | (tsel_wr_en << 1) | (tsel_idle_en << 2))
                << 24;
        clrsetbits_le32(&denali_phy[6], 0x7 << 24, reg_value);
        clrsetbits_le32(&denali_phy[134], 0x7 << 24, reg_value);
        clrsetbits_le32(&denali_phy[262], 0x7 << 24, reg_value);
        clrsetbits_le32(&denali_phy[390], 0x7 << 24, reg_value);

        /* phy_adr_tsel_enable_ 1bit DENALI_PHY_518/646/774 offset_8 */
        reg_value = tsel_wr_en << 8;
        clrsetbits_le32(&denali_phy[518], 0x1 << 8, reg_value);
        clrsetbits_le32(&denali_phy[646], 0x1 << 8, reg_value);
        clrsetbits_le32(&denali_phy[774], 0x1 << 8, reg_value);

        /* phy_pad_addr_term tsel 1bit DENALI_PHY_933 offset_17 */
        reg_value = tsel_wr_en << 17;
        clrsetbits_le32(&denali_phy[933], 0x1 << 17, reg_value);
        /*
         * pad_rst/cke/cs/clk_term tsel 1bits
         * DENALI_PHY_938/936/940/934 offset_17
         */
        clrsetbits_le32(&denali_phy[938], 0x1 << 17, reg_value);
        clrsetbits_le32(&denali_phy[936], 0x1 << 17, reg_value);
        clrsetbits_le32(&denali_phy[940], 0x1 << 17, reg_value);
        clrsetbits_le32(&denali_phy[934], 0x1 << 17, reg_value);

        /* phy_pad_fdbk_term 1bit DENALI_PHY_930 offset_17 */
        clrsetbits_le32(&denali_phy[930], 0x1 << 17, reg_value);

        phy_io_config(denali_phy, denali_ctl, params, mr5);
}

static void pctl_start(struct dram_info *dram,
                       struct rk3399_sdram_params *params,
                       u32 channel_mask)
{
        const struct chan_info *chan_0 = &dram->chan[0];
        const struct chan_info *chan_1 = &dram->chan[1];

        u32 *denali_ctl_0 = chan_0->pctl->denali_ctl;
        u32 *denali_phy_0 = chan_0->publ->denali_phy;
        u32 *ddrc0_con_0 = get_ddrc0_con(dram, 0);
        u32 *denali_ctl_1 = chan_1->pctl->denali_ctl;
        u32 *denali_phy_1 = chan_1->publ->denali_phy;
        u32 *ddrc1_con_0 = get_ddrc0_con(dram, 1);
        u32 count = 0;
        u32 byte, tmp;

        /* PHY_DLL_RST_EN */
        if (channel_mask & 1) {
                writel(0x01000000, &ddrc0_con_0);
                clrsetbits_le32(&denali_phy_0[957], 0x3 << 24, 0x2 << 24);
        }

        if (channel_mask & 1) {
                count = 0;
                while (!(readl(&denali_ctl_0[203]) & (1 << 3))) {
                        if (count > 1000) {
                                printf("%s: Failed to init pctl channel 0\n",
                                       __func__);
                                while (1)
                                        ;
                        }
                        udelay(1);
                        count++;
                }

                writel(0x01000100, &ddrc0_con_0);
                for (byte = 0; byte < 4; byte++)        {
                        tmp = 0x820;
                        writel((tmp << 16) | tmp,
                               &denali_phy_0[53 + (128 * byte)]);
                        writel((tmp << 16) | tmp,
                               &denali_phy_0[54 + (128 * byte)]);
                        writel((tmp << 16) | tmp,
                               &denali_phy_0[55 + (128 * byte)]);
                        writel((tmp << 16) | tmp,
                               &denali_phy_0[56 + (128 * byte)]);
                        writel((tmp << 16) | tmp,
                               &denali_phy_0[57 + (128 * byte)]);
                        clrsetbits_le32(&denali_phy_0[58 + (128 * byte)],
                                        0xffff, tmp);
                }
                clrsetbits_le32(&denali_ctl_0[68], PWRUP_SREFRESH_EXIT,
                                dram->pwrup_srefresh_exit[0]);
        }

        if (channel_mask & 2) {
                writel(0x01000000, &ddrc1_con_0);
                clrsetbits_le32(&denali_phy_1[957], 0x3 << 24, 0x2 << 24);
        }
        if (channel_mask & 2) {
                count = 0;
                while (!(readl(&denali_ctl_1[203]) & (1 << 3))) {
                        if (count > 1000) {
                                printf("%s: Failed to init pctl channel 1\n",
                                       __func__);
                                while (1)
                                        ;
                        }
                        udelay(1);
                        count++;
                }

                writel(0x01000100, &ddrc1_con_0);
                for (byte = 0; byte < 4; byte++)        {
                        tmp = 0x820;
                        writel((tmp << 16) | tmp,
                               &denali_phy_1[53 + (128 * byte)]);
                        writel((tmp << 16) | tmp,
                               &denali_phy_1[54 + (128 * byte)]);
                        writel((tmp << 16) | tmp,
                               &denali_phy_1[55 + (128 * byte)]);
                        writel((tmp << 16) | tmp,
                               &denali_phy_1[56 + (128 * byte)]);
                        writel((tmp << 16) | tmp,
                               &denali_phy_1[57 + (128 * byte)]);
                        clrsetbits_le32(&denali_phy_1[58 + (128 * byte)],
                                        0xffff, tmp);
                }

                clrsetbits_le32(&denali_ctl_1[68], PWRUP_SREFRESH_EXIT,
                                dram->pwrup_srefresh_exit[1]);

                /*
                 * restore channel 1 RESET original setting
                 * to avoid 240ohm too weak to prevent ESD test
                 */
                if (params->base.dramtype == LPDDR4)
                        clrsetbits_le32(&denali_phy_1[937], 0xff,
                                        params->phy_regs.denali_phy[937] &
                                        0xFF);
        }
}

static int pctl_cfg(struct dram_info *dram, const struct chan_info *chan,
                    u32 channel, struct rk3399_sdram_params *params)
{
        u32 *denali_ctl = chan->pctl->denali_ctl;
        u32 *denali_pi = chan->pi->denali_pi;
        u32 *denali_phy = chan->publ->denali_phy;
        const u32 *params_ctl = params->pctl_regs.denali_ctl;
        const u32 *params_phy = params->phy_regs.denali_phy;
        u32 tmp, tmp1, tmp2;
        struct rk3399_sdram_params *params_cfg;
        u32 byte;

        dram->ops->modify_param(chan, params);
        /*
         * work around controller bug:
         * Do not program DRAM_CLASS until NO_PHY_IND_TRAIN_INT is programmed
         */
        sdram_copy_to_reg(&denali_ctl[1], &params_ctl[1],
                          sizeof(struct rk3399_ddr_pctl_regs) - 4);
        writel(params_ctl[0], &denali_ctl[0]);

        /*
         * two channel init at the same time, then ZQ Cal Start
         * at the same time, it will use the same RZQ, but cannot
         * start at the same time.
         *
         * So, increase tINIT3 for channel 1, will avoid two
         * channel ZQ Cal Start at the same time
         */
        if (params->base.dramtype == LPDDR4 && channel == 1) {
                tmp = ((params->base.ddr_freq * MHz + 999) / 1000);
                tmp1 = readl(&denali_ctl[14]);
                writel(tmp + tmp1, &denali_ctl[14]);
        }

        sdram_copy_to_reg(denali_pi, &params->pi_regs.denali_pi[0],
                          sizeof(struct rk3399_ddr_pi_regs));

        /* rank count need to set for init */
        set_memory_map(chan, channel, params);

        writel(params->phy_regs.denali_phy[910], &denali_phy[910]);
        writel(params->phy_regs.denali_phy[911], &denali_phy[911]);
        writel(params->phy_regs.denali_phy[912], &denali_phy[912]);

        if (params->base.dramtype == LPDDR4) {
                writel(params->phy_regs.denali_phy[898], &denali_phy[898]);
                writel(params->phy_regs.denali_phy[919], &denali_phy[919]);
        }

        dram->pwrup_srefresh_exit[channel] = readl(&denali_ctl[68]) &
                                             PWRUP_SREFRESH_EXIT;
        clrbits_le32(&denali_ctl[68], PWRUP_SREFRESH_EXIT);

        /* PHY_DLL_RST_EN */
        clrsetbits_le32(&denali_phy[957], 0x3 << 24, 1 << 24);

        setbits_le32(&denali_pi[0], START);
        setbits_le32(&denali_ctl[0], START);

        /**
         * LPDDR4 use PLL bypass mode for init
         * not need to wait for the PLL to lock
         */
        if (params->base.dramtype != LPDDR4) {
                /* Waiting for phy DLL lock */
                while (1) {
                        tmp = readl(&denali_phy[920]);
                        tmp1 = readl(&denali_phy[921]);
                        tmp2 = readl(&denali_phy[922]);
                        if ((((tmp >> 16) & 0x1) == 0x1) &&
                            (((tmp1 >> 16) & 0x1) == 0x1) &&
                            (((tmp1 >> 0) & 0x1) == 0x1) &&
                            (((tmp2 >> 0) & 0x1) == 0x1))
                                break;
                }
        }

        sdram_copy_to_reg(&denali_phy[896], &params_phy[896], (958 - 895) * 4);
        sdram_copy_to_reg(&denali_phy[0], &params_phy[0], (90 - 0 + 1) * 4);
        sdram_copy_to_reg(&denali_phy[128], &params_phy[128],
                          (218 - 128 + 1) * 4);
        sdram_copy_to_reg(&denali_phy[256], &params_phy[256],
                          (346 - 256 + 1) * 4);
        sdram_copy_to_reg(&denali_phy[384], &params_phy[384],
                          (474 - 384 + 1) * 4);
        sdram_copy_to_reg(&denali_phy[512], &params_phy[512],
                          (549 - 512 + 1) * 4);
        sdram_copy_to_reg(&denali_phy[640], &params_phy[640],
                          (677 - 640 + 1) * 4);
        sdram_copy_to_reg(&denali_phy[768], &params_phy[768],
                          (805 - 768 + 1) * 4);

        if (params->base.dramtype == LPDDR4)
                params_cfg = dram->ops->get_phy_index_params(1, params);
        else
                params_cfg = dram->ops->get_phy_index_params(0, params);

        clrsetbits_le32(&params_cfg->phy_regs.denali_phy[896], 0x3 << 8,
                        0 << 8);
        writel(params_cfg->phy_regs.denali_phy[896], &denali_phy[896]);

        writel(params->phy_regs.denali_phy[83] + (0x10 << 16),
               &denali_phy[83]);
        writel(params->phy_regs.denali_phy[84] + (0x10 << 8),
               &denali_phy[84]);
        writel(params->phy_regs.denali_phy[211] + (0x10 << 16),
               &denali_phy[211]);
        writel(params->phy_regs.denali_phy[212] + (0x10 << 8),
               &denali_phy[212]);
        writel(params->phy_regs.denali_phy[339] + (0x10 << 16),

               &denali_phy[339]);
        writel(params->phy_regs.denali_phy[340] + (0x10 << 8),
               &denali_phy[340]);
        writel(params->phy_regs.denali_phy[467] + (0x10 << 16),
               &denali_phy[467]);
        writel(params->phy_regs.denali_phy[468] + (0x10 << 8),
               &denali_phy[468]);

        if (params->base.dramtype == LPDDR4) {
                /*
                 * to improve write dqs and dq phase from 1.5ns to 3.5ns
                 * at 50MHz. this's the measure result from oscilloscope
                 * of dqs and dq write signal.
                 */
                for (byte = 0; byte < 4; byte++) {
                        tmp = 0x680;
                        clrsetbits_le32(&denali_phy[1 + (128 * byte)],
                                        0xfff << 8, tmp << 8);
                }
                /*
                 * to workaround 366ball two channel's RESET connect to
                 * one RESET signal of die
                 */
                if (channel == 1)
                        clrsetbits_le32(&denali_phy[937], 0xff,
                                        PHY_DRV_ODT_240 |
                                        (PHY_DRV_ODT_240 << 0x4));
        }

        return 0;
}

static void select_per_cs_training_index(const struct chan_info *chan,
                                         u32 rank)
{
        u32 *denali_phy = chan->publ->denali_phy;

        /* PHY_84 PHY_PER_CS_TRAINING_EN_0 1bit offset_16 */
        if ((readl(&denali_phy[84]) >> 16) & 1) {
                /*
                 * PHY_8/136/264/392
                 * phy_per_cs_training_index_X 1bit offset_24
                 */
                clrsetbits_le32(&denali_phy[8], 0x1 << 24, rank << 24);
                clrsetbits_le32(&denali_phy[136], 0x1 << 24, rank << 24);
                clrsetbits_le32(&denali_phy[264], 0x1 << 24, rank << 24);
                clrsetbits_le32(&denali_phy[392], 0x1 << 24, rank << 24);
        }
}

static void override_write_leveling_value(const struct chan_info *chan)
{
        u32 *denali_ctl = chan->pctl->denali_ctl;
        u32 *denali_phy = chan->publ->denali_phy;
        u32 byte;

        /* PHY_896 PHY_FREQ_SEL_MULTICAST_EN 1bit offset_0 */
        setbits_le32(&denali_phy[896], 1);

        /*
         * PHY_8/136/264/392
         * phy_per_cs_training_multicast_en_X 1bit offset_16
         */
        clrsetbits_le32(&denali_phy[8], 0x1 << 16, 1 << 16);
        clrsetbits_le32(&denali_phy[136], 0x1 << 16, 1 << 16);
        clrsetbits_le32(&denali_phy[264], 0x1 << 16, 1 << 16);
        clrsetbits_le32(&denali_phy[392], 0x1 << 16, 1 << 16);

        for (byte = 0; byte < 4; byte++)
                clrsetbits_le32(&denali_phy[63 + (128 * byte)], 0xffff << 16,
                                0x200 << 16);

        /* PHY_896 PHY_FREQ_SEL_MULTICAST_EN 1bit offset_0 */
        clrbits_le32(&denali_phy[896], 1);

        /* CTL_200 ctrlupd_req 1bit offset_8 */
        clrsetbits_le32(&denali_ctl[200], 0x1 << 8, 0x1 << 8);
}

static int data_training_ca(const struct chan_info *chan, u32 channel,
                            const struct rk3399_sdram_params *params)
{
        u32 *denali_pi = chan->pi->denali_pi;
        u32 *denali_phy = chan->publ->denali_phy;
        u32 i, tmp;
        u32 obs_0, obs_1, obs_2, obs_err = 0;
        u32 rank = params->ch[channel].cap_info.rank;
        u32 rank_mask;

        /* clear interrupt,PI_175 PI_INT_ACK:WR:0:17 */
        writel(0x00003f7c, (&denali_pi[175]));

        if (params->base.dramtype == LPDDR4)
                rank_mask = (rank == 1) ? 0x5 : 0xf;
        else
                rank_mask = (rank == 1) ? 0x1 : 0x3;

        for (i = 0; i < 4; i++) {
                if (!(rank_mask & (1 << i)))
                        continue;

                select_per_cs_training_index(chan, i);

                /* PI_100 PI_CALVL_EN:RW:8:2 */
                clrsetbits_le32(&denali_pi[100], 0x3 << 8, 0x2 << 8);

                /* PI_92 PI_CALVL_REQ:WR:16:1,PI_CALVL_CS:RW:24:2 */
                clrsetbits_le32(&denali_pi[92],
                                (0x1 << 16) | (0x3 << 24),
                                (0x1 << 16) | (i << 24));

                /* Waiting for training complete */
                while (1) {
                        /* PI_174 PI_INT_STATUS:RD:8:18 */
                        tmp = readl(&denali_pi[174]) >> 8;
                        /*
                         * check status obs
                         * PHY_532/660/789 phy_adr_calvl_obs1_:0:32
                         */
                        obs_0 = readl(&denali_phy[532]);
                        obs_1 = readl(&denali_phy[660]);
                        obs_2 = readl(&denali_phy[788]);
                        if (((obs_0 >> 30) & 0x3) ||
                            ((obs_1 >> 30) & 0x3) ||
                            ((obs_2 >> 30) & 0x3))
                                obs_err = 1;
                        if ((((tmp >> 11) & 0x1) == 0x1) &&
                            (((tmp >> 13) & 0x1) == 0x1) &&
                            (((tmp >> 5) & 0x1) == 0x0) &&
                            obs_err == 0)
                                break;
                        else if ((((tmp >> 5) & 0x1) == 0x1) ||
                                 (obs_err == 1))
                                return -EIO;
                }

                /* clear interrupt,PI_175 PI_INT_ACK:WR:0:17 */
                writel(0x00003f7c, (&denali_pi[175]));
        }

        clrbits_le32(&denali_pi[100], 0x3 << 8);

        return 0;
}

static int data_training_wl(const struct chan_info *chan, u32 channel,
                            const struct rk3399_sdram_params *params)
{
        u32 *denali_pi = chan->pi->denali_pi;
        u32 *denali_phy = chan->publ->denali_phy;
        u32 i, tmp;
        u32 obs_0, obs_1, obs_2, obs_3, obs_err = 0;
        u32 rank = params->ch[channel].cap_info.rank;

        /* clear interrupt,PI_175 PI_INT_ACK:WR:0:17 */
        writel(0x00003f7c, (&denali_pi[175]));

        for (i = 0; i < rank; i++) {
                select_per_cs_training_index(chan, i);

                /* PI_60 PI_WRLVL_EN:RW:8:2 */
                clrsetbits_le32(&denali_pi[60], 0x3 << 8, 0x2 << 8);

                /* PI_59 PI_WRLVL_REQ:WR:8:1,PI_WRLVL_CS:RW:16:2 */
                clrsetbits_le32(&denali_pi[59],
                                (0x1 << 8) | (0x3 << 16),
                                (0x1 << 8) | (i << 16));

                /* Waiting for training complete */
                while (1) {
                        /* PI_174 PI_INT_STATUS:RD:8:18 */
                        tmp = readl(&denali_pi[174]) >> 8;

                        /*
                         * check status obs, if error maybe can not
                         * get leveling done PHY_40/168/296/424
                         * phy_wrlvl_status_obs_X:0:13
                         */
                        obs_0 = readl(&denali_phy[40]);
                        obs_1 = readl(&denali_phy[168]);
                        obs_2 = readl(&denali_phy[296]);
                        obs_3 = readl(&denali_phy[424]);
                        if (((obs_0 >> 12) & 0x1) ||
                            ((obs_1 >> 12) & 0x1) ||
                            ((obs_2 >> 12) & 0x1) ||
                            ((obs_3 >> 12) & 0x1))
                                obs_err = 1;
                        if ((((tmp >> 10) & 0x1) == 0x1) &&
                            (((tmp >> 13) & 0x1) == 0x1) &&
                            (((tmp >> 4) & 0x1) == 0x0) &&
                            obs_err == 0)
                                break;
                        else if ((((tmp >> 4) & 0x1) == 0x1) ||
                                 (obs_err == 1))
                                return -EIO;
                }

                /* clear interrupt,PI_175 PI_INT_ACK:WR:0:17 */
                writel(0x00003f7c, (&denali_pi[175]));
        }

        override_write_leveling_value(chan);
        clrbits_le32(&denali_pi[60], 0x3 << 8);

        return 0;
}

static int data_training_rg(const struct chan_info *chan, u32 channel,
                            const struct rk3399_sdram_params *params)
{
        u32 *denali_pi = chan->pi->denali_pi;
        u32 *denali_phy = chan->publ->denali_phy;
        u32 i, tmp;
        u32 obs_0, obs_1, obs_2, obs_3, obs_err = 0;
        u32 rank = params->ch[channel].cap_info.rank;

        /* clear interrupt,PI_175 PI_INT_ACK:WR:0:17 */
        writel(0x00003f7c, (&denali_pi[175]));

        for (i = 0; i < rank; i++) {
                select_per_cs_training_index(chan, i);

                /* PI_80 PI_RDLVL_GATE_EN:RW:24:2 */
                clrsetbits_le32(&denali_pi[80], 0x3 << 24, 0x2 << 24);

                /*
                 * PI_74 PI_RDLVL_GATE_REQ:WR:16:1
                 * PI_RDLVL_CS:RW:24:2
                 */
                clrsetbits_le32(&denali_pi[74],
                                (0x1 << 16) | (0x3 << 24),
                                (0x1 << 16) | (i << 24));

                /* Waiting for training complete */
                while (1) {
                        /* PI_174 PI_INT_STATUS:RD:8:18 */
                        tmp = readl(&denali_pi[174]) >> 8;

                        /*
                         * check status obs
                         * PHY_43/171/299/427
                         *     PHY_GTLVL_STATUS_OBS_x:16:8
                         */
                        obs_0 = readl(&denali_phy[43]);
                        obs_1 = readl(&denali_phy[171]);
                        obs_2 = readl(&denali_phy[299]);
                        obs_3 = readl(&denali_phy[427]);
                        if (((obs_0 >> (16 + 6)) & 0x3) ||
                            ((obs_1 >> (16 + 6)) & 0x3) ||
                            ((obs_2 >> (16 + 6)) & 0x3) ||
                            ((obs_3 >> (16 + 6)) & 0x3))
                                obs_err = 1;
                        if ((((tmp >> 9) & 0x1) == 0x1) &&
                            (((tmp >> 13) & 0x1) == 0x1) &&
                            (((tmp >> 3) & 0x1) == 0x0) &&
                            obs_err == 0)
                                break;
                        else if ((((tmp >> 3) & 0x1) == 0x1) ||
                                 (obs_err == 1))
                                return -EIO;
                }

                /* clear interrupt,PI_175 PI_INT_ACK:WR:0:17 */
                writel(0x00003f7c, (&denali_pi[175]));
        }

        clrbits_le32(&denali_pi[80], 0x3 << 24);

        return 0;
}

static int data_training_rl(const struct chan_info *chan, u32 channel,
                            const struct rk3399_sdram_params *params)
{
        u32 *denali_pi = chan->pi->denali_pi;
        u32 i, tmp;
        u32 rank = params->ch[channel].cap_info.rank;

        /* clear interrupt,PI_175 PI_INT_ACK:WR:0:17 */
        writel(0x00003f7c, (&denali_pi[175]));

        for (i = 0; i < rank; i++) {
                select_per_cs_training_index(chan, i);

                /* PI_80 PI_RDLVL_EN:RW:16:2 */
                clrsetbits_le32(&denali_pi[80], 0x3 << 16, 0x2 << 16);

                /* PI_74 PI_RDLVL_REQ:WR:8:1,PI_RDLVL_CS:RW:24:2 */
                clrsetbits_le32(&denali_pi[74],
                                (0x1 << 8) | (0x3 << 24),
                                (0x1 << 8) | (i << 24));

                /* Waiting for training complete */
                while (1) {
                        /* PI_174 PI_INT_STATUS:RD:8:18 */
                        tmp = readl(&denali_pi[174]) >> 8;

                        /*
                         * make sure status obs not report error bit
                         * PHY_46/174/302/430
                         *     phy_rdlvl_status_obs_X:16:8
                         */
                        if ((((tmp >> 8) & 0x1) == 0x1) &&
                            (((tmp >> 13) & 0x1) == 0x1) &&
                            (((tmp >> 2) & 0x1) == 0x0))
                                break;
                        else if (((tmp >> 2) & 0x1) == 0x1)
                                return -EIO;
                }

                /* clear interrupt,PI_175 PI_INT_ACK:WR:0:17 */
                writel(0x00003f7c, (&denali_pi[175]));
        }

        clrbits_le32(&denali_pi[80], 0x3 << 16);

        return 0;
}

static int data_training_wdql(const struct chan_info *chan, u32 channel,
                              const struct rk3399_sdram_params *params)
{
        u32 *denali_pi = chan->pi->denali_pi;
        u32 i, tmp;
        u32 rank = params->ch[channel].cap_info.rank;
        u32 rank_mask;

        /* clear interrupt,PI_175 PI_INT_ACK:WR:0:17 */
        writel(0x00003f7c, (&denali_pi[175]));

        if (params->base.dramtype == LPDDR4)
                rank_mask = (rank == 1) ? 0x5 : 0xf;
        else
                rank_mask = (rank == 1) ? 0x1 : 0x3;

        for (i = 0; i < 4; i++) {
                if (!(rank_mask & (1 << i)))
                        continue;

                select_per_cs_training_index(chan, i);

                /*
                 * disable PI_WDQLVL_VREF_EN before wdq leveling?
                 * PI_117 PI_WDQLVL_VREF_EN:RW:8:1
                 */
                clrbits_le32(&denali_pi[117], 0x1 << 8);
                /* PI_124 PI_WDQLVL_EN:RW:16:2 */
                clrsetbits_le32(&denali_pi[124], 0x3 << 16, 0x2 << 16);

                /* PI_121 PI_WDQLVL_REQ:WR:8:1,PI_WDQLVL_CS:RW:16:2 */
                clrsetbits_le32(&denali_pi[121],
                                (0x1 << 8) | (0x3 << 16),
                                (0x1 << 8) | (i << 16));

                /* Waiting for training complete */
                while (1) {
                        /* PI_174 PI_INT_STATUS:RD:8:18 */
                        tmp = readl(&denali_pi[174]) >> 8;
                        if ((((tmp >> 12) & 0x1) == 0x1) &&
                            (((tmp >> 13) & 0x1) == 0x1) &&
                            (((tmp >> 6) & 0x1) == 0x0))
                                break;
                        else if (((tmp >> 6) & 0x1) == 0x1)
                                return -EIO;
                }

                /* clear interrupt,PI_175 PI_INT_ACK:WR:0:17 */
                writel(0x00003f7c, (&denali_pi[175]));
        }

        clrbits_le32(&denali_pi[124], 0x3 << 16);

        return 0;
}

static int data_training(struct dram_info *dram, u32 channel,
                         const struct rk3399_sdram_params *params,
                         u32 training_flag)
{
        struct chan_info *chan = &dram->chan[channel];
        u32 *denali_phy = chan->publ->denali_phy;
        int ret;

        /* PHY_927 PHY_PAD_DQS_DRIVE  RPULL offset_22 */
        setbits_le32(&denali_phy[927], (1 << 22));

        if (training_flag == PI_FULL_TRAINING) {
                if (params->base.dramtype == LPDDR4) {
                        training_flag = PI_WRITE_LEVELING |
                                        PI_READ_GATE_TRAINING |
                                        PI_READ_LEVELING | PI_WDQ_LEVELING;
                } else if (params->base.dramtype == LPDDR3) {
                        training_flag = PI_CA_TRAINING | PI_WRITE_LEVELING |
                                        PI_READ_GATE_TRAINING;
                } else if (params->base.dramtype == DDR3) {
                        training_flag = PI_WRITE_LEVELING |
                                        PI_READ_GATE_TRAINING |
                                        PI_READ_LEVELING;
                }
        }

        /* ca training(LPDDR4,LPDDR3 support) */
        if ((training_flag & PI_CA_TRAINING) == PI_CA_TRAINING) {
                ret = data_training_ca(chan, channel, params);
                if (ret < 0) {
                        debug("%s: data training ca failed\n", __func__);
                        return ret;
                }
        }

        /* write leveling(LPDDR4,LPDDR3,DDR3 support) */
        if ((training_flag & PI_WRITE_LEVELING) == PI_WRITE_LEVELING) {
                ret = data_training_wl(chan, channel, params);
                if (ret < 0) {
                        debug("%s: data training wl failed\n", __func__);
                        return ret;
                }
        }

        /* read gate training(LPDDR4,LPDDR3,DDR3 support) */
        if ((training_flag & PI_READ_GATE_TRAINING) == PI_READ_GATE_TRAINING) {
                ret = data_training_rg(chan, channel, params);
                if (ret < 0) {
                        debug("%s: data training rg failed\n", __func__);
                        return ret;
                }
        }

        /* read leveling(LPDDR4,LPDDR3,DDR3 support) */
        if ((training_flag & PI_READ_LEVELING) == PI_READ_LEVELING) {
                ret = data_training_rl(chan, channel, params);
                if (ret < 0) {
                        debug("%s: data training rl failed\n", __func__);
                        return ret;
                }
        }

        /* wdq leveling(LPDDR4 support) */
        if ((training_flag & PI_WDQ_LEVELING) == PI_WDQ_LEVELING) {
                ret = data_training_wdql(chan, channel, params);
                if (ret < 0) {
                        debug("%s: data training wdql failed\n", __func__);
                        return ret;
                }
        }

        /* PHY_927 PHY_PAD_DQS_DRIVE  RPULL offset_22 */
        clrbits_le32(&denali_phy[927], (1 << 22));

        return 0;
}

static void set_ddrconfig(const struct chan_info *chan,
                          const struct rk3399_sdram_params *params,
                          unsigned char channel, u32 ddrconfig)
{
        /* only need to set ddrconfig */
        struct msch_regs *ddr_msch_regs = chan->msch;
        unsigned int cs0_cap = 0;
        unsigned int cs1_cap = 0;

        cs0_cap = (1 << (params->ch[channel].cap_info.cs0_row
                        + params->ch[channel].cap_info.col
                        + params->ch[channel].cap_info.bk
                        + params->ch[channel].cap_info.bw - 20));
        if (params->ch[channel].cap_info.rank > 1)
                cs1_cap = cs0_cap >> (params->ch[channel].cap_info.cs0_row
                                - params->ch[channel].cap_info.cs1_row);
        if (params->ch[channel].cap_info.row_3_4) {
                cs0_cap = cs0_cap * 3 / 4;
                cs1_cap = cs1_cap * 3 / 4;
        }

        writel(ddrconfig | (ddrconfig << 8), &ddr_msch_regs->ddrconf);
        writel(((cs0_cap / 32) & 0xff) | (((cs1_cap / 32) & 0xff) << 8),
               &ddr_msch_regs->ddrsize);
}

static void sdram_msch_config(struct msch_regs *msch,
                              struct sdram_msch_timings *noc_timings)
{
        writel(noc_timings->ddrtiminga0.d32,
               &msch->ddrtiminga0.d32);
        writel(noc_timings->ddrtimingb0.d32,
               &msch->ddrtimingb0.d32);
        writel(noc_timings->ddrtimingc0.d32,
               &msch->ddrtimingc0.d32);
        writel(noc_timings->devtodev0.d32,
               &msch->devtodev0.d32);
        writel(noc_timings->ddrmode.d32,
               &msch->ddrmode.d32);
}

static void dram_all_config(struct dram_info *dram,
                            struct rk3399_sdram_params *params)
{
        u32 sys_reg2 = 0;
        u32 sys_reg3 = 0;
        unsigned int channel, idx;

        for (channel = 0, idx = 0;
             (idx < params->base.num_channels) && (channel < 2);
             channel++) {
                struct msch_regs *ddr_msch_regs;
                struct sdram_msch_timings *noc_timing;

                if (params->ch[channel].cap_info.col == 0)
                        continue;
                idx++;
                sdram_org_config(&params->ch[channel].cap_info,
                                 &params->base, &sys_reg2,
                                 &sys_reg3, channel);
                ddr_msch_regs = dram->chan[channel].msch;
                noc_timing = &params->ch[channel].noc_timings;
                sdram_msch_config(ddr_msch_regs, noc_timing);

                /**
                 * rank 1 memory clock disable (dfi_dram_clk_disable = 1)
                 *
                 * The hardware for LPDDR4 with
                 * - CLK0P/N connect to lower 16-bits
                 * - CLK1P/N connect to higher 16-bits
                 *
                 * dfi dram clk is configured via CLK1P/N, so disabling
                 * dfi dram clk will disable the CLK1P/N as well for lpddr4.
                 */
                if (params->ch[channel].cap_info.rank == 1 &&
                    params->base.dramtype != LPDDR4)
                        setbits_le32(&dram->chan[channel].pctl->denali_ctl[276],
                                     1 << 17);
        }

        writel(sys_reg2, &dram->pmugrf->os_reg2);
        writel(sys_reg3, &dram->pmugrf->os_reg3);
        rk_clrsetreg(&dram->pmusgrf->soc_con4, 0x1f << 10,
                     params->base.stride << 10);

        /* reboot hold register set */
        writel(PRESET_SGRF_HOLD(0) | PRESET_GPIO0_HOLD(1) |
                PRESET_GPIO1_HOLD(1),
                &dram->pmucru->pmucru_rstnhold_con[1]);
        clrsetbits_le32(&dram->cru->glb_rst_con, 0x3, 0x3);
}

static void set_cap_relate_config(const struct chan_info *chan,
                                  struct rk3399_sdram_params *params,
                                  unsigned int channel)
{
        u32 *denali_ctl = chan->pctl->denali_ctl;
        u32 tmp;
        struct sdram_msch_timings *noc_timing;

        if (params->base.dramtype == LPDDR3) {
                tmp = (8 << params->ch[channel].cap_info.bw) /
                        (8 << params->ch[channel].cap_info.dbw);

                /**
                 * memdata_ratio
                 * 1 -> 0, 2 -> 1, 4 -> 2
                 */
                clrsetbits_le32(&denali_ctl[197], 0x7,
                                (tmp >> 1));
                clrsetbits_le32(&denali_ctl[198], 0x7 << 8,
                                (tmp >> 1) << 8);
        }

        noc_timing = &params->ch[channel].noc_timings;

        /*
         * noc timing bw relate timing is 32 bit, and real bw is 16bit
         * actually noc reg is setting at function dram_all_config
         */
        if (params->ch[channel].cap_info.bw == 16 &&
            noc_timing->ddrmode.b.mwrsize == 2) {
                if (noc_timing->ddrmode.b.burstsize)
                        noc_timing->ddrmode.b.burstsize -= 1;
                noc_timing->ddrmode.b.mwrsize -= 1;
                noc_timing->ddrtimingc0.b.burstpenalty *= 2;
                noc_timing->ddrtimingc0.b.wrtomwr *= 2;
        }
}

static u32 calculate_ddrconfig(struct rk3399_sdram_params *params, u32 channel)
{
        unsigned int cs0_row = params->ch[channel].cap_info.cs0_row;
        unsigned int col = params->ch[channel].cap_info.col;
        unsigned int bw = params->ch[channel].cap_info.bw;
        u16  ddr_cfg_2_rbc[] = {
                /*
                 * [6]    highest bit col
                 * [5:3]  max row(14+n)
                 * [2]    insertion row
                 * [1:0]  col(9+n),col, data bus 32bit
                 *
                 * highbitcol, max_row, insertion_row,  col
                 */
                ((0 << 6) | (2 << 3) | (0 << 2) | 0), /* 0 */
                ((0 << 6) | (2 << 3) | (0 << 2) | 1), /* 1 */
                ((0 << 6) | (1 << 3) | (0 << 2) | 2), /* 2 */
                ((0 << 6) | (0 << 3) | (0 << 2) | 3), /* 3 */
                ((0 << 6) | (2 << 3) | (1 << 2) | 1), /* 4 */
                ((0 << 6) | (1 << 3) | (1 << 2) | 2), /* 5 */
                ((1 << 6) | (0 << 3) | (0 << 2) | 2), /* 6 */
                ((1 << 6) | (1 << 3) | (0 << 2) | 2), /* 7 */
        };
        u32 i;

        col -= (bw == 2) ? 0 : 1;
        col -= 9;

        for (i = 0; i < 4; i++) {
                if ((col == (ddr_cfg_2_rbc[i] & 0x3)) &&
                    (cs0_row <= (((ddr_cfg_2_rbc[i] >> 3) & 0x7) + 14)))
                        break;
        }

        if (i >= 4)
                i = -EINVAL;

        return i;
}

static void set_ddr_stride(struct rk3399_pmusgrf_regs *pmusgrf, u32 stride)
{
        rk_clrsetreg(&pmusgrf->soc_con4, 0x1f << 10, stride << 10);
}

#if !defined(CONFIG_RAM_RK3399_LPDDR4)
static int data_training_first(struct dram_info *dram, u32 channel, u8 rank,
                               struct rk3399_sdram_params *params)
{
        u8 training_flag = PI_READ_GATE_TRAINING;

        /*
         * LPDDR3 CA training msut be trigger before
         * other training.
         * DDR3 is not have CA training.
         */

        if (params->base.dramtype == LPDDR3)
                training_flag |= PI_CA_TRAINING;

        return data_training(dram, channel, params, training_flag);
}

static int switch_to_phy_index1(struct dram_info *dram,
                                struct rk3399_sdram_params *params,
                                u32 unused)
{
        u32 channel;
        u32 *denali_phy;
        u32 ch_count = params->base.num_channels;
        int ret;
        int i = 0;

        writel(RK_CLRSETBITS(0x03 << 4 | 1 << 2 | 1,
                             1 << 4 | 1 << 2 | 1),
                        &dram->cic->cic_ctrl0);
        while (!(readl(&dram->cic->cic_status0) & (1 << 2))) {
                mdelay(10);
                i++;
                if (i > 10) {
                        debug("index1 frequency change overtime\n");
                        return -ETIME;
                }
        }

        i = 0;
        writel(RK_CLRSETBITS(1 << 1, 1 << 1), &dram->cic->cic_ctrl0);
        while (!(readl(&dram->cic->cic_status0) & (1 << 0))) {
                mdelay(10);
                i++;
                if (i > 10) {
                        debug("index1 frequency done overtime\n");
                        return -ETIME;
                }
        }

        for (channel = 0; channel < ch_count; channel++) {
                denali_phy = dram->chan[channel].publ->denali_phy;
                clrsetbits_le32(&denali_phy[896], (0x3 << 8) | 1, 1 << 8);
                ret = data_training(dram, channel, params, PI_FULL_TRAINING);
                if (ret < 0) {
                        debug("index1 training failed\n");
                        return ret;
                }
        }

        return 0;
}

struct rk3399_sdram_params
        *get_phy_index_params(u32 phy_fn,
                              struct rk3399_sdram_params *params)
{
        if (phy_fn == 0)
                return params;
        else
                return NULL;
}

void modify_param(const struct chan_info *chan,
                  struct rk3399_sdram_params *params)
{
        struct rk3399_sdram_params *params_cfg;
        u32 *denali_pi_params;

        denali_pi_params = params->pi_regs.denali_pi;

        /* modify PHY F0/F1/F2 params */
        params_cfg = get_phy_index_params(0, params);
        set_ds_odt(chan, params_cfg, false, 0);

        clrsetbits_le32(&denali_pi_params[45], 0x1 << 24, 0x1 << 24);
        clrsetbits_le32(&denali_pi_params[61], 0x1 << 24, 0x1 << 24);
        clrsetbits_le32(&denali_pi_params[76], 0x1 << 24, 0x1 << 24);
        clrsetbits_le32(&denali_pi_params[77], 0x1, 0x1);
}
#else

struct rk3399_sdram_params dfs_cfgs_lpddr4[] = {
#include "sdram-rk3399-lpddr4-400.inc"
#include "sdram-rk3399-lpddr4-800.inc"
};

static struct rk3399_sdram_params
        *lpddr4_get_phy_index_params(u32 phy_fn,
                                     struct rk3399_sdram_params *params)
{
        if (phy_fn == 0)
                return params;
        else if (phy_fn == 1)
                return &dfs_cfgs_lpddr4[1];
        else if (phy_fn == 2)
                return &dfs_cfgs_lpddr4[0];
        else
                return NULL;
}

static void *get_denali_pi(const struct chan_info *chan,
                           struct rk3399_sdram_params *params, bool reg)
{
        return reg ? &chan->pi->denali_pi : &params->pi_regs.denali_pi;
}

static u32 lpddr4_get_phy_fn(struct rk3399_sdram_params *params, u32 ctl_fn)
{
        u32 lpddr4_phy_fn[] = {1, 0, 0xb};

        return lpddr4_phy_fn[ctl_fn];
}

static u32 lpddr4_get_ctl_fn(struct rk3399_sdram_params *params, u32 phy_fn)
{
        u32 lpddr4_ctl_fn[] = {1, 0, 2};

        return lpddr4_ctl_fn[phy_fn];
}

static u32 get_ddr_stride(struct rk3399_pmusgrf_regs *pmusgrf)
{
        return ((readl(&pmusgrf->soc_con4) >> 10) & 0x1F);
}

/*
 * read mr_num mode register
 * rank = 1: cs0
 * rank = 2: cs1
 */
static int read_mr(struct rk3399_ddr_pctl_regs *ddr_pctl_regs, u32 rank,
                   u32 mr_num, u32 *buf)
{
        s32 timeout = 100;

        writel(((1 << 16) | (((rank == 2) ? 1 : 0) << 8) | mr_num) << 8,
               &ddr_pctl_regs->denali_ctl[118]);

        while (0 == (readl(&ddr_pctl_regs->denali_ctl[203]) &
                        ((1 << 21) | (1 << 12)))) {
                udelay(1);

                if (timeout <= 0) {
                        printf("%s: pctl timeout!\n", __func__);
                        return -ETIMEDOUT;
                }

                timeout--;
        }

        if (!(readl(&ddr_pctl_regs->denali_ctl[203]) & (1 << 12))) {
                *buf = readl(&ddr_pctl_regs->denali_ctl[119]) & 0xFF;
        } else {
                printf("%s: read mr failed with 0x%x status\n", __func__,
                       readl(&ddr_pctl_regs->denali_ctl[17]) & 0x3);
                *buf = 0;
        }

        setbits_le32(&ddr_pctl_regs->denali_ctl[205], (1 << 21) | (1 << 12));

        return 0;
}

static int lpddr4_mr_detect(struct dram_info *dram, u32 channel, u8 rank,
                            struct rk3399_sdram_params *params)
{
        u64 cs0_cap;
        u32 stride;
        u32 cs = 0, col = 0, bk = 0, bw = 0, row_3_4 = 0;
        u32 cs0_row = 0, cs1_row = 0, ddrconfig = 0;
        u32 mr5, mr12, mr14;
        struct chan_info *chan = &dram->chan[channel];
        struct rk3399_ddr_pctl_regs *ddr_pctl_regs = chan->pctl;
        void __iomem *addr = NULL;
        int ret = 0;
        u32 val;

        stride = get_ddr_stride(dram->pmusgrf);

        if (params->ch[channel].cap_info.col == 0) {
                ret = -EPERM;
                goto end;
        }

        cs = params->ch[channel].cap_info.rank;
        col = params->ch[channel].cap_info.col;
        bk = params->ch[channel].cap_info.bk;
        bw = params->ch[channel].cap_info.bw;
        row_3_4 = params->ch[channel].cap_info.row_3_4;
        cs0_row = params->ch[channel].cap_info.cs0_row;
        cs1_row = params->ch[channel].cap_info.cs1_row;
        ddrconfig = params->ch[channel].cap_info.ddrconfig;

        /* 2GB */
        params->ch[channel].cap_info.rank = 2;
        params->ch[channel].cap_info.col = 10;
        params->ch[channel].cap_info.bk = 3;
        params->ch[channel].cap_info.bw = 2;
        params->ch[channel].cap_info.row_3_4 = 0;
        params->ch[channel].cap_info.cs0_row = 15;
        params->ch[channel].cap_info.cs1_row = 15;
        params->ch[channel].cap_info.ddrconfig = 1;

        set_memory_map(chan, channel, params);
        params->ch[channel].cap_info.ddrconfig =
                        calculate_ddrconfig(params, channel);
        set_ddrconfig(chan, params, channel,
                      params->ch[channel].cap_info.ddrconfig);
        set_cap_relate_config(chan, params, channel);

        cs0_cap = (1 << (params->ch[channel].cap_info.bw
                        + params->ch[channel].cap_info.col
                        + params->ch[channel].cap_info.bk
                        + params->ch[channel].cap_info.cs0_row));

        if (params->ch[channel].cap_info.row_3_4)
                cs0_cap = cs0_cap * 3 / 4;

        if (channel == 0)
                set_ddr_stride(dram->pmusgrf, 0x17);
        else
                set_ddr_stride(dram->pmusgrf, 0x18);

        /* read and write data to DRAM, avoid be optimized by compiler. */
        if (rank == 1)
                addr = (void __iomem *)0x100;
        else if (rank == 2)
                addr = (void __iomem *)(cs0_cap + 0x100);

        val = readl(addr);
        writel(val + 1, addr);

        read_mr(ddr_pctl_regs, rank, 5, &mr5);
        read_mr(ddr_pctl_regs, rank, 12, &mr12);
        read_mr(ddr_pctl_regs, rank, 14, &mr14);

        if (mr5 == 0 || mr12 != 0x4d || mr14 != 0x4d) {
                ret = -EINVAL;
                goto end;
        }
end:
        params->ch[channel].cap_info.rank = cs;
        params->ch[channel].cap_info.col = col;
        params->ch[channel].cap_info.bk = bk;
        params->ch[channel].cap_info.bw = bw;
        params->ch[channel].cap_info.row_3_4 = row_3_4;
        params->ch[channel].cap_info.cs0_row = cs0_row;
        params->ch[channel].cap_info.cs1_row = cs1_row;
        params->ch[channel].cap_info.ddrconfig = ddrconfig;

        set_ddr_stride(dram->pmusgrf, stride);

        return ret;
}

static void set_lpddr4_dq_odt(const struct chan_info *chan,
                              struct rk3399_sdram_params *params, u32 ctl_fn,
                              bool en, bool ctl_phy_reg, u32 mr5)
{
        u32 *denali_ctl = get_denali_ctl(chan, params, ctl_phy_reg);
        u32 *denali_pi = get_denali_pi(chan, params, ctl_phy_reg);
        struct io_setting *io;
        u32 reg_value;

        io = lpddr4_get_io_settings(params, mr5);
        if (en)
                reg_value = io->dq_odt;
        else
                reg_value = 0;

        switch (ctl_fn) {
        case 0:
                clrsetbits_le32(&denali_ctl[139], 0x7 << 24, reg_value << 24);
                clrsetbits_le32(&denali_ctl[153], 0x7 << 24, reg_value << 24);

                clrsetbits_le32(&denali_pi[132], 0x7 << 0, (reg_value << 0));
                clrsetbits_le32(&denali_pi[139], 0x7 << 16, (reg_value << 16));
                clrsetbits_le32(&denali_pi[147], 0x7 << 0, (reg_value << 0));
                clrsetbits_le32(&denali_pi[154], 0x7 << 16, (reg_value << 16));
                break;
        case 1:
                clrsetbits_le32(&denali_ctl[140], 0x7 << 0, reg_value << 0);
                clrsetbits_le32(&denali_ctl[154], 0x7 << 0, reg_value << 0);

                clrsetbits_le32(&denali_pi[129], 0x7 << 16, (reg_value << 16));
                clrsetbits_le32(&denali_pi[137], 0x7 << 0, (reg_value << 0));
                clrsetbits_le32(&denali_pi[144], 0x7 << 16, (reg_value << 16));
                clrsetbits_le32(&denali_pi[152], 0x7 << 0, (reg_value << 0));
                break;
        case 2:
        default:
                clrsetbits_le32(&denali_ctl[140], 0x7 << 8, (reg_value << 8));
                clrsetbits_le32(&denali_ctl[154], 0x7 << 8, (reg_value << 8));

                clrsetbits_le32(&denali_pi[127], 0x7 << 0, (reg_value << 0));
                clrsetbits_le32(&denali_pi[134], 0x7 << 16, (reg_value << 16));
                clrsetbits_le32(&denali_pi[142], 0x7 << 0, (reg_value << 0));
                clrsetbits_le32(&denali_pi[149], 0x7 << 16, (reg_value << 16));
                break;
        }
}

static void set_lpddr4_ca_odt(const struct chan_info *chan,
                              struct rk3399_sdram_params *params, u32 ctl_fn,
                              bool en, bool ctl_phy_reg, u32 mr5)
{
        u32 *denali_ctl = get_denali_ctl(chan, params, ctl_phy_reg);
        u32 *denali_pi = get_denali_pi(chan, params, ctl_phy_reg);
        struct io_setting *io;
        u32 reg_value;

        io = lpddr4_get_io_settings(params, mr5);
        if (en)
                reg_value = io->ca_odt;
        else
                reg_value = 0;

        switch (ctl_fn) {
        case 0:
                clrsetbits_le32(&denali_ctl[139], 0x7 << 28, reg_value << 28);
                clrsetbits_le32(&denali_ctl[153], 0x7 << 28, reg_value << 28);

                clrsetbits_le32(&denali_pi[132], 0x7 << 4, reg_value << 4);
                clrsetbits_le32(&denali_pi[139], 0x7 << 20, reg_value << 20);
                clrsetbits_le32(&denali_pi[147], 0x7 << 4, reg_value << 4);
                clrsetbits_le32(&denali_pi[154], 0x7 << 20, reg_value << 20);
                break;
        case 1:
                clrsetbits_le32(&denali_ctl[140], 0x7 << 4, reg_value << 4);
                clrsetbits_le32(&denali_ctl[154], 0x7 << 4, reg_value << 4);

                clrsetbits_le32(&denali_pi[129], 0x7 << 20, reg_value << 20);
                clrsetbits_le32(&denali_pi[137], 0x7 << 4, reg_value << 4);
                clrsetbits_le32(&denali_pi[144], 0x7 << 20, reg_value << 20);
                clrsetbits_le32(&denali_pi[152], 0x7 << 4, reg_value << 4);
                break;
        case 2:
        default:
                clrsetbits_le32(&denali_ctl[140], 0x7 << 12, (reg_value << 12));
                clrsetbits_le32(&denali_ctl[154], 0x7 << 12, (reg_value << 12));

                clrsetbits_le32(&denali_pi[127], 0x7 << 4, reg_value << 4);
                clrsetbits_le32(&denali_pi[134], 0x7 << 20, reg_value << 20);
                clrsetbits_le32(&denali_pi[142], 0x7 << 4, reg_value << 4);
                clrsetbits_le32(&denali_pi[149], 0x7 << 20, reg_value << 20);
                break;
        }
}

static void set_lpddr4_MR3(const struct chan_info *chan,
                           struct rk3399_sdram_params *params, u32 ctl_fn,
                           bool ctl_phy_reg, u32 mr5)
{
        u32 *denali_ctl = get_denali_ctl(chan, params, ctl_phy_reg);
        u32 *denali_pi = get_denali_pi(chan, params, ctl_phy_reg);
        struct io_setting *io;
        u32 reg_value;

        io = lpddr4_get_io_settings(params, mr5);

        reg_value = ((io->pdds << 3) | 1);

        switch (ctl_fn) {
        case 0:
                clrsetbits_le32(&denali_ctl[138], 0xFFFF, reg_value);
                clrsetbits_le32(&denali_ctl[152], 0xFFFF, reg_value);

                clrsetbits_le32(&denali_pi[131], 0xFFFF << 16, reg_value << 16);
                clrsetbits_le32(&denali_pi[139], 0xFFFF, reg_value);
                clrsetbits_le32(&denali_pi[146], 0xFFFF << 16, reg_value << 16);
                clrsetbits_le32(&denali_pi[154], 0xFFFF, reg_value);
                break;
        case 1:
                clrsetbits_le32(&denali_ctl[138], 0xFFFF << 16,
                                reg_value << 16);
                clrsetbits_le32(&denali_ctl[152], 0xFFFF << 16,
                                reg_value << 16);

                clrsetbits_le32(&denali_pi[129], 0xFFFF, reg_value);
                clrsetbits_le32(&denali_pi[136], 0xFFFF << 16, reg_value << 16);
                clrsetbits_le32(&denali_pi[144], 0xFFFF, reg_value);
                clrsetbits_le32(&denali_pi[151], 0xFFFF << 16, reg_value << 16);
                break;
        case 2:
        default:
                clrsetbits_le32(&denali_ctl[139], 0xFFFF, reg_value);
                clrsetbits_le32(&denali_ctl[153], 0xFFFF, reg_value);

                clrsetbits_le32(&denali_pi[126], 0xFFFF << 16, reg_value << 16);
                clrsetbits_le32(&denali_pi[134], 0xFFFF, reg_value);
                clrsetbits_le32(&denali_pi[141], 0xFFFF << 16, reg_value << 16);
                clrsetbits_le32(&denali_pi[149], 0xFFFF, reg_value);
                break;
        }
}

static void set_lpddr4_MR12(const struct chan_info *chan,
                            struct rk3399_sdram_params *params, u32 ctl_fn,
                            bool ctl_phy_reg, u32 mr5)
{
        u32 *denali_ctl = get_denali_ctl(chan, params, ctl_phy_reg);
        u32 *denali_pi = get_denali_pi(chan, params, ctl_phy_reg);
        struct io_setting *io;
        u32 reg_value;

        io = lpddr4_get_io_settings(params, mr5);

        reg_value = io->ca_vref;

        switch (ctl_fn) {
        case 0:
                clrsetbits_le32(&denali_ctl[140], 0xFFFF << 16,
                                reg_value << 16);
                clrsetbits_le32(&denali_ctl[154], 0xFFFF << 16,
                                reg_value << 16);

                clrsetbits_le32(&denali_pi[132], 0xFF << 8, reg_value << 8);
                clrsetbits_le32(&denali_pi[139], 0xFF << 24, reg_value << 24);
                clrsetbits_le32(&denali_pi[147], 0xFF << 8, reg_value << 8);
                clrsetbits_le32(&denali_pi[154], 0xFF << 24, reg_value << 24);
                break;
        case 1:
                clrsetbits_le32(&denali_ctl[141], 0xFFFF, reg_value);
                clrsetbits_le32(&denali_ctl[155], 0xFFFF, reg_value);

                clrsetbits_le32(&denali_pi[129], 0xFF << 24, reg_value << 24);
                clrsetbits_le32(&denali_pi[137], 0xFF << 8, reg_value << 8);
                clrsetbits_le32(&denali_pi[144], 0xFF << 24, reg_value << 24);
                clrsetbits_le32(&denali_pi[152], 0xFF << 8, reg_value << 8);
                break;
        case 2:
        default:
                clrsetbits_le32(&denali_ctl[141], 0xFFFF << 16,
                                reg_value << 16);
                clrsetbits_le32(&denali_ctl[155], 0xFFFF << 16,
                                reg_value << 16);

                clrsetbits_le32(&denali_pi[127], 0xFF << 8, reg_value << 8);
                clrsetbits_le32(&denali_pi[134], 0xFF << 24, reg_value << 24);
                clrsetbits_le32(&denali_pi[142], 0xFF << 8, reg_value << 8);
                clrsetbits_le32(&denali_pi[149], 0xFF << 24, reg_value << 24);
                break;
        }
}

static void set_lpddr4_MR14(const struct chan_info *chan,
                            struct rk3399_sdram_params *params, u32 ctl_fn,
                            bool ctl_phy_reg, u32 mr5)
{
        u32 *denali_ctl = get_denali_ctl(chan, params, ctl_phy_reg);
        u32 *denali_pi = get_denali_pi(chan, params, ctl_phy_reg);
        struct io_setting *io;
        u32 reg_value;

        io = lpddr4_get_io_settings(params, mr5);

        reg_value = io->dq_vref;

        switch (ctl_fn) {
        case 0:
                clrsetbits_le32(&denali_ctl[142], 0xFFFF << 16,
                                reg_value << 16);
                clrsetbits_le32(&denali_ctl[156], 0xFFFF << 16,
                                reg_value << 16);

                clrsetbits_le32(&denali_pi[132], 0xFF << 16, reg_value << 16);
                clrsetbits_le32(&denali_pi[140], 0xFF << 0, reg_value << 0);
                clrsetbits_le32(&denali_pi[147], 0xFF << 16, reg_value << 16);
                clrsetbits_le32(&denali_pi[155], 0xFF << 0, reg_value << 0);
                break;
        case 1:
                clrsetbits_le32(&denali_ctl[143], 0xFFFF, reg_value);
                clrsetbits_le32(&denali_ctl[157], 0xFFFF, reg_value);

                clrsetbits_le32(&denali_pi[130], 0xFF << 0, reg_value << 0);
                clrsetbits_le32(&denali_pi[137], 0xFF << 16, reg_value << 16);
                clrsetbits_le32(&denali_pi[145], 0xFF << 0, reg_value << 0);
                clrsetbits_le32(&denali_pi[152], 0xFF << 16, reg_value << 16);
                break;
        case 2:
        default:
                clrsetbits_le32(&denali_ctl[143], 0xFFFF << 16,
                                reg_value << 16);
                clrsetbits_le32(&denali_ctl[157], 0xFFFF << 16,
                                reg_value << 16);

                clrsetbits_le32(&denali_pi[127], 0xFF << 16, reg_value << 16);
                clrsetbits_le32(&denali_pi[135], 0xFF << 0, reg_value << 0);
                clrsetbits_le32(&denali_pi[142], 0xFF << 16, reg_value << 16);
                clrsetbits_le32(&denali_pi[150], 0xFF << 0, reg_value << 0);
                break;
        }
}

void lpddr4_modify_param(const struct chan_info *chan,
                         struct rk3399_sdram_params *params)
{
        struct rk3399_sdram_params *params_cfg;
        u32 *denali_ctl_params;
        u32 *denali_pi_params;
        u32 *denali_phy_params;

        denali_ctl_params = params->pctl_regs.denali_ctl;
        denali_pi_params = params->pi_regs.denali_pi;
        denali_phy_params = params->phy_regs.denali_phy;

        set_lpddr4_dq_odt(chan, params, 2, true, false, 0);
        set_lpddr4_ca_odt(chan, params, 2, true, false, 0);
        set_lpddr4_MR3(chan, params, 2, false, 0);
        set_lpddr4_MR12(chan, params, 2, false, 0);
        set_lpddr4_MR14(chan, params, 2, false, 0);
        params_cfg = lpddr4_get_phy_index_params(0, params);
        set_ds_odt(chan, params_cfg, false, 0);
        /* read two cycle preamble */
        clrsetbits_le32(&denali_ctl_params[200], 0x3 << 24, 0x3 << 24);
        clrsetbits_le32(&denali_phy_params[7], 0x3 << 24, 0x3 << 24);
        clrsetbits_le32(&denali_phy_params[135], 0x3 << 24, 0x3 << 24);
        clrsetbits_le32(&denali_phy_params[263], 0x3 << 24, 0x3 << 24);
        clrsetbits_le32(&denali_phy_params[391], 0x3 << 24, 0x3 << 24);

        /* boot frequency two cycle preamble */
        clrsetbits_le32(&denali_phy_params[2], 0x3 << 16, 0x3 << 16);
        clrsetbits_le32(&denali_phy_params[130], 0x3 << 16, 0x3 << 16);
        clrsetbits_le32(&denali_phy_params[258], 0x3 << 16, 0x3 << 16);
        clrsetbits_le32(&denali_phy_params[386], 0x3 << 16, 0x3 << 16);

        clrsetbits_le32(&denali_pi_params[45], 0x3 << 8, 0x3 << 8);
        clrsetbits_le32(&denali_pi_params[58], 0x1, 0x1);

        /*
         * bypass mode need PHY_SLICE_PWR_RDC_DISABLE_x = 1,
         * boot frequency mode use bypass mode
         */
        setbits_le32(&denali_phy_params[10], 1 << 16);
        setbits_le32(&denali_phy_params[138], 1 << 16);
        setbits_le32(&denali_phy_params[266], 1 << 16);
        setbits_le32(&denali_phy_params[394], 1 << 16);

        clrsetbits_le32(&denali_pi_params[45], 0x1 << 24, 0x1 << 24);
        clrsetbits_le32(&denali_pi_params[61], 0x1 << 24, 0x1 << 24);
        clrsetbits_le32(&denali_pi_params[76], 0x1 << 24, 0x1 << 24);
        clrsetbits_le32(&denali_pi_params[77], 0x1, 0x1);
}

static void lpddr4_copy_phy(struct dram_info *dram,
                            struct rk3399_sdram_params *params, u32 phy_fn,
                            struct rk3399_sdram_params *params_cfg,
                            u32 channel)
{
        u32 *denali_ctl, *denali_phy;
        u32 *denali_phy_params;
        u32 speed = 0;
        u32 ctl_fn, mr5;

        denali_ctl = dram->chan[channel].pctl->denali_ctl;
        denali_phy = dram->chan[channel].publ->denali_phy;
        denali_phy_params = params_cfg->phy_regs.denali_phy;

        /* switch index */
        clrsetbits_le32(&denali_phy_params[896], 0x3 << 8,
                        phy_fn << 8);
        writel(denali_phy_params[896], &denali_phy[896]);

        /* phy_pll_ctrl_ca, phy_pll_ctrl */
        writel(denali_phy_params[911], &denali_phy[911]);

        /* phy_low_freq_sel */
        clrsetbits_le32(&denali_phy[913], 0x1,
                        denali_phy_params[913] & 0x1);

        /* phy_grp_slave_delay_x, phy_cslvl_dly_step */
        writel(denali_phy_params[916], &denali_phy[916]);
        writel(denali_phy_params[917], &denali_phy[917]);
        writel(denali_phy_params[918], &denali_phy[918]);

        /* phy_adrz_sw_wraddr_shift_x  */
        writel(denali_phy_params[512], &denali_phy[512]);
        clrsetbits_le32(&denali_phy[513], 0xffff,
                        denali_phy_params[513] & 0xffff);
        writel(denali_phy_params[640], &denali_phy[640]);
        clrsetbits_le32(&denali_phy[641], 0xffff,
                        denali_phy_params[641] & 0xffff);
        writel(denali_phy_params[768], &denali_phy[768]);
        clrsetbits_le32(&denali_phy[769], 0xffff,
                        denali_phy_params[769] & 0xffff);

        writel(denali_phy_params[544], &denali_phy[544]);
        writel(denali_phy_params[545], &denali_phy[545]);
        writel(denali_phy_params[546], &denali_phy[546]);
        writel(denali_phy_params[547], &denali_phy[547]);

        writel(denali_phy_params[672], &denali_phy[672]);
        writel(denali_phy_params[673], &denali_phy[673]);
        writel(denali_phy_params[674], &denali_phy[674]);
        writel(denali_phy_params[675], &denali_phy[675]);

        writel(denali_phy_params[800], &denali_phy[800]);
        writel(denali_phy_params[801], &denali_phy[801]);
        writel(denali_phy_params[802], &denali_phy[802]);
        writel(denali_phy_params[803], &denali_phy[803]);

        /*
         * phy_adr_master_delay_start_x
         * phy_adr_master_delay_step_x
         * phy_adr_master_delay_wait_x
         */
        writel(denali_phy_params[548], &denali_phy[548]);
        writel(denali_phy_params[676], &denali_phy[676]);
        writel(denali_phy_params[804], &denali_phy[804]);

        /* phy_adr_calvl_dly_step_x */
        writel(denali_phy_params[549], &denali_phy[549]);
        writel(denali_phy_params[677], &denali_phy[677]);
        writel(denali_phy_params[805], &denali_phy[805]);

        /*
         * phy_clk_wrdm_slave_delay_x
         * phy_clk_wrdqz_slave_delay_x
         * phy_clk_wrdqs_slave_delay_x
         */
        sdram_copy_to_reg((u32 *)&denali_phy[59],
                          (u32 *)&denali_phy_params[59], (63 - 58) * 4);
        sdram_copy_to_reg((u32 *)&denali_phy[187],
                          (u32 *)&denali_phy_params[187], (191 - 186) * 4);
        sdram_copy_to_reg((u32 *)&denali_phy[315],
                          (u32 *)&denali_phy_params[315], (319 - 314) * 4);
        sdram_copy_to_reg((u32 *)&denali_phy[443],
                          (u32 *)&denali_phy_params[443], (447 - 442) * 4);

        /*
         * phy_dqs_tsel_wr_timing_x 8bits denali_phy_84/212/340/468 offset_8
         * dqs_tsel_wr_end[7:4] add half cycle
         * phy_dq_tsel_wr_timing_x 8bits denali_phy_83/211/339/467 offset_8
         * dq_tsel_wr_end[7:4] add half cycle
         */
        writel(denali_phy_params[83] + (0x10 << 16), &denali_phy[83]);
        writel(denali_phy_params[84] + (0x10 << 8), &denali_phy[84]);
        writel(denali_phy_params[85], &denali_phy[85]);

        writel(denali_phy_params[211] + (0x10 << 16), &denali_phy[211]);
        writel(denali_phy_params[212] + (0x10 << 8), &denali_phy[212]);
        writel(denali_phy_params[213], &denali_phy[213]);

        writel(denali_phy_params[339] + (0x10 << 16), &denali_phy[339]);
        writel(denali_phy_params[340] + (0x10 << 8), &denali_phy[340]);
        writel(denali_phy_params[341], &denali_phy[341]);

        writel(denali_phy_params[467] + (0x10 << 16), &denali_phy[467]);
        writel(denali_phy_params[468] + (0x10 << 8), &denali_phy[468]);
        writel(denali_phy_params[469], &denali_phy[469]);

        /*
         * phy_gtlvl_resp_wait_cnt_x
         * phy_gtlvl_dly_step_x
         * phy_wrlvl_resp_wait_cnt_x
         * phy_gtlvl_final_step_x
         * phy_gtlvl_back_step_x
         * phy_rdlvl_dly_step_x
         *
         * phy_master_delay_step_x
         * phy_master_delay_wait_x
         * phy_wrlvl_dly_step_x
         * phy_rptr_update_x
         * phy_wdqlvl_dly_step_x
         */
        writel(denali_phy_params[87], &denali_phy[87]);
        writel(denali_phy_params[88], &denali_phy[88]);
        writel(denali_phy_params[89], &denali_phy[89]);
        writel(denali_phy_params[90], &denali_phy[90]);

        writel(denali_phy_params[215], &denali_phy[215]);
        writel(denali_phy_params[216], &denali_phy[216]);
        writel(denali_phy_params[217], &denali_phy[217]);
        writel(denali_phy_params[218], &denali_phy[218]);

        writel(denali_phy_params[343], &denali_phy[343]);
        writel(denali_phy_params[344], &denali_phy[344]);
        writel(denali_phy_params[345], &denali_phy[345]);
        writel(denali_phy_params[346], &denali_phy[346]);

        writel(denali_phy_params[471], &denali_phy[471]);
        writel(denali_phy_params[472], &denali_phy[472]);
        writel(denali_phy_params[473], &denali_phy[473]);
        writel(denali_phy_params[474], &denali_phy[474]);

        /*
         * phy_gtlvl_lat_adj_start_x
         * phy_gtlvl_rddqs_slv_dly_start_x
         * phy_rdlvl_rddqs_dq_slv_dly_start_x
         * phy_wdqlvl_dqdm_slv_dly_start_x
         */
        writel(denali_phy_params[80], &denali_phy[80]);
        writel(denali_phy_params[81], &denali_phy[81]);

        writel(denali_phy_params[208], &denali_phy[208]);
        writel(denali_phy_params[209], &denali_phy[209]);

        writel(denali_phy_params[336], &denali_phy[336]);
        writel(denali_phy_params[337], &denali_phy[337]);

        writel(denali_phy_params[464], &denali_phy[464]);
        writel(denali_phy_params[465], &denali_phy[465]);

        /*
         * phy_master_delay_start_x
         * phy_sw_master_mode_x
         * phy_rddata_en_tsel_dly_x
         */
        writel(denali_phy_params[86], &denali_phy[86]);
        writel(denali_phy_params[214], &denali_phy[214]);
        writel(denali_phy_params[342], &denali_phy[342]);
        writel(denali_phy_params[470], &denali_phy[470]);

        /*
         * phy_rddqz_slave_delay_x
         * phy_rddqs_dqz_fall_slave_delay_x
         * phy_rddqs_dqz_rise_slave_delay_x
         * phy_rddqs_dm_fall_slave_delay_x
         * phy_rddqs_dm_rise_slave_delay_x
         * phy_rddqs_gate_slave_delay_x
         * phy_wrlvl_delay_early_threshold_x
         * phy_write_path_lat_add_x
         * phy_rddqs_latency_adjust_x
         * phy_wrlvl_delay_period_threshold_x
         * phy_wrlvl_early_force_zero_x
         */
        sdram_copy_to_reg((u32 *)&denali_phy[64],
                          (u32 *)&denali_phy_params[64], (67 - 63) * 4);
        clrsetbits_le32(&denali_phy[68], 0xfffffc00,
                        denali_phy_params[68] & 0xfffffc00);
        sdram_copy_to_reg((u32 *)&denali_phy[69],
                          (u32 *)&denali_phy_params[69], (79 - 68) * 4);
        sdram_copy_to_reg((u32 *)&denali_phy[192],
                          (u32 *)&denali_phy_params[192], (195 - 191) * 4);
        clrsetbits_le32(&denali_phy[196], 0xfffffc00,
                        denali_phy_params[196] & 0xfffffc00);
        sdram_copy_to_reg((u32 *)&denali_phy[197],
                          (u32 *)&denali_phy_params[197], (207 - 196) * 4);
        sdram_copy_to_reg((u32 *)&denali_phy[320],
                          (u32 *)&denali_phy_params[320], (323 - 319) * 4);
        clrsetbits_le32(&denali_phy[324], 0xfffffc00,
                        denali_phy_params[324] & 0xfffffc00);
        sdram_copy_to_reg((u32 *)&denali_phy[325],
                          (u32 *)&denali_phy_params[325], (335 - 324) * 4);
        sdram_copy_to_reg((u32 *)&denali_phy[448],
                          (u32 *)&denali_phy_params[448], (451 - 447) * 4);
        clrsetbits_le32(&denali_phy[452], 0xfffffc00,
                        denali_phy_params[452] & 0xfffffc00);
        sdram_copy_to_reg((u32 *)&denali_phy[453],
                          (u32 *)&denali_phy_params[453], (463 - 452) * 4);

        /* phy_two_cyc_preamble_x */
        clrsetbits_le32(&denali_phy[7], 0x3 << 24,
                        denali_phy_params[7] & (0x3 << 24));
        clrsetbits_le32(&denali_phy[135], 0x3 << 24,
                        denali_phy_params[135] & (0x3 << 24));
        clrsetbits_le32(&denali_phy[263], 0x3 << 24,
                        denali_phy_params[263] & (0x3 << 24));
        clrsetbits_le32(&denali_phy[391], 0x3 << 24,
                        denali_phy_params[391] & (0x3 << 24));

        /* speed */
        if (params_cfg->base.ddr_freq < 400)
                speed = 0x0;
        else if (params_cfg->base.ddr_freq < 800)
                speed = 0x1;
        else if (params_cfg->base.ddr_freq < 1200)
                speed = 0x2;

        /* phy_924 phy_pad_fdbk_drive */
        clrsetbits_le32(&denali_phy[924], 0x3 << 21, speed << 21);
        /* phy_926 phy_pad_data_drive */
        clrsetbits_le32(&denali_phy[926], 0x3 << 9, speed << 9);
        /* phy_927 phy_pad_dqs_drive */
        clrsetbits_le32(&denali_phy[927], 0x3 << 9, speed << 9);
        /* phy_928 phy_pad_addr_drive */
        clrsetbits_le32(&denali_phy[928], 0x3 << 17, speed << 17);
        /* phy_929 phy_pad_clk_drive */
        clrsetbits_le32(&denali_phy[929], 0x3 << 17, speed << 17);
        /* phy_935 phy_pad_cke_drive */
        clrsetbits_le32(&denali_phy[935], 0x3 << 17, speed << 17);
        /* phy_937 phy_pad_rst_drive */
        clrsetbits_le32(&denali_phy[937], 0x3 << 17, speed << 17);
        /* phy_939 phy_pad_cs_drive */
        clrsetbits_le32(&denali_phy[939], 0x3 << 17, speed << 17);

        if (params_cfg->base.dramtype == LPDDR4) {
                read_mr(dram->chan[channel].pctl, 1, 5, &mr5);
                set_ds_odt(&dram->chan[channel], params_cfg, true, mr5);

                ctl_fn = lpddr4_get_ctl_fn(params_cfg, phy_fn);
                set_lpddr4_dq_odt(&dram->chan[channel], params_cfg,
                                  ctl_fn, true, true, mr5);
                set_lpddr4_ca_odt(&dram->chan[channel], params_cfg,
                                  ctl_fn, true, true, mr5);
                set_lpddr4_MR3(&dram->chan[channel], params_cfg,
                               ctl_fn, true, mr5);
                set_lpddr4_MR12(&dram->chan[channel], params_cfg,
                                ctl_fn, true, mr5);
                set_lpddr4_MR14(&dram->chan[channel], params_cfg,
                                ctl_fn, true, mr5);

                /*
                 * if phy_sw_master_mode_x not bypass mode,
                 * clear phy_slice_pwr_rdc_disable.
                 * note: need use timings, not ddr_publ_regs
                 */
                if (!((denali_phy_params[86] >> 8) & (1 << 2))) {
                        clrbits_le32(&denali_phy[10], 1 << 16);
                        clrbits_le32(&denali_phy[138], 1 << 16);
                        clrbits_le32(&denali_phy[266], 1 << 16);
                        clrbits_le32(&denali_phy[394], 1 << 16);
                }

                /*
                 * when PHY_PER_CS_TRAINING_EN=1, W2W_DIFFCS_DLY_Fx can't
                 * smaller than 8
                 * NOTE: need use timings, not ddr_publ_regs
                 */
                if ((denali_phy_params[84] >> 16) & 1) {
                        if (((readl(&denali_ctl[217 + ctl_fn]) >>
                                16) & 0x1f) < 8)
                                clrsetbits_le32(&denali_ctl[217 + ctl_fn],
                                                0x1f << 16,
                                                8 << 16);
                }
        }
}

static void lpddr4_set_phy(struct dram_info *dram,
                           struct rk3399_sdram_params *params, u32 phy_fn,
                           struct rk3399_sdram_params *params_cfg)
{
        u32 channel;

        for (channel = 0; channel < 2; channel++)
                lpddr4_copy_phy(dram, params, phy_fn, params_cfg,
                                channel);
}

static int lpddr4_set_ctl(struct dram_info *dram,
                          struct rk3399_sdram_params *params,
                          u32 fn, u32 hz)
{
        u32 channel;
        int ret_clk, ret;

        /* cci idle req stall */
        writel(0x70007, &dram->grf->soc_con0);

        /* enable all clk */
        setbits_le32(&dram->pmu->pmu_noc_auto_ena, (0x3 << 7));

        /* idle */
        setbits_le32(&dram->pmu->pmu_bus_idle_req, (0x3 << 18));
        while ((readl(&dram->pmu->pmu_bus_idle_st) & (0x3 << 18))
               != (0x3 << 18))
                ;

        /* change freq */
        writel((((0x3 << 4) | (1 << 2) | 1) << 16) |
                (fn << 4) | (1 << 2) | 1, &dram->cic->cic_ctrl0);
        while (!(readl(&dram->cic->cic_status0) & (1 << 2)))
                ;

        ret_clk = clk_set_rate(&dram->ddr_clk, hz);
        if (ret_clk < 0) {
                printf("%s clk set failed %d\n", __func__, ret_clk);
                return ret_clk;
        }

        writel(0x20002, &dram->cic->cic_ctrl0);
        while (!(readl(&dram->cic->cic_status0) & (1 << 0)))
                ;

        /* deidle */
        clrbits_le32(&dram->pmu->pmu_bus_idle_req, (0x3 << 18));
        while (readl(&dram->pmu->pmu_bus_idle_st) & (0x3 << 18))
                ;

        /* clear enable all clk */
        clrbits_le32(&dram->pmu->pmu_noc_auto_ena, (0x3 << 7));

        /* lpddr4 ctl2 can not do training, all training will fail */
        if (!(params->base.dramtype == LPDDR4 && fn == 2)) {
                for (channel = 0; channel < 2; channel++) {
                        if (!(params->ch[channel].cap_info.col))
                                continue;
                        ret = data_training(dram, channel, params,
                                            PI_FULL_TRAINING);
                        if (ret)
                                printf("%s: channel %d training failed!\n",
                                       __func__, channel);
                        else
                                debug("%s: channel %d training pass\n",
                                      __func__, channel);
                }
        }

        return 0;
}

static int lpddr4_set_rate(struct dram_info *dram,
                            struct rk3399_sdram_params *params,
                            u32 ctl_fn)
{
        u32 phy_fn;

        phy_fn = lpddr4_get_phy_fn(params, ctl_fn);

        lpddr4_set_phy(dram, params, phy_fn, &dfs_cfgs_lpddr4[ctl_fn]);
        lpddr4_set_ctl(dram, params, ctl_fn,
                       dfs_cfgs_lpddr4[ctl_fn].base.ddr_freq);

        if (IS_ENABLED(CONFIG_RAM_ROCKCHIP_DEBUG))
                printf("%s: change freq to %dMHz %d, %d\n", __func__,
                       dfs_cfgs_lpddr4[ctl_fn].base.ddr_freq / MHz,
                       ctl_fn, phy_fn);

        return 0;
}

#endif /* CONFIG_RAM_RK3399_LPDDR4 */

/* CS0,n=1
 * CS1,n=2
 * CS0 & CS1, n=3
 * cs0_cap: MB unit
 */
static void dram_set_cs(const struct chan_info *chan, u32 cs_map, u32 cs0_cap,
                        unsigned char dramtype)
{
        u32 *denali_ctl = chan->pctl->denali_ctl;
        u32 *denali_pi = chan->pi->denali_pi;
        struct msch_regs *ddr_msch_regs = chan->msch;

        clrsetbits_le32(&denali_ctl[196], 0x3, cs_map);
        writel((cs0_cap / 32) | (((4096 - cs0_cap) / 32) << 8),
               &ddr_msch_regs->ddrsize);
        if (dramtype == LPDDR4) {
                if (cs_map == 1)
                        cs_map = 0x5;
                else if (cs_map == 2)
                        cs_map = 0xa;
                else
                        cs_map = 0xF;
        }
        /*PI_41 PI_CS_MAP:RW:24:4*/
        clrsetbits_le32(&denali_pi[41],
                        0xf << 24, cs_map << 24);
        if (cs_map == 1 && dramtype == DDR3)
                writel(0x2EC7FFFF, &denali_pi[34]);
}

static void dram_set_bw(const struct chan_info *chan, u32 bw)
{
        u32 *denali_ctl = chan->pctl->denali_ctl;

        if (bw == 2)
                clrbits_le32(&denali_ctl[196], 1 << 16);
        else
                setbits_le32(&denali_ctl[196], 1 << 16);
}

static void dram_set_max_col(const struct chan_info *chan, u32 bw, u32 *pcol)
{
        u32 *denali_ctl = chan->pctl->denali_ctl;
        struct msch_regs *ddr_msch_regs = chan->msch;
        u32 *denali_pi = chan->pi->denali_pi;
        u32 ddrconfig;

        clrbits_le32(&denali_ctl[191], 0xf);
        clrsetbits_le32(&denali_ctl[190],
                        (7 << 24),
                        ((16 - ((bw == 2) ? 14 : 15)) << 24));
        /*PI_199 PI_COL_DIFF:RW:0:4*/
        clrbits_le32(&denali_pi[199], 0xf);
        /*PI_155 PI_ROW_DIFF:RW:24:3*/
        clrsetbits_le32(&denali_pi[155],
                        (7 << 24),
                        ((16 - 12) << 24));
        ddrconfig = (bw == 2) ? 3 : 2;
        writel(ddrconfig | (ddrconfig << 8), &ddr_msch_regs->ddrconf);
        /* set max cs0 size */
        writel((4096 / 32) | ((0 / 32) << 8),
               &ddr_msch_regs->ddrsize);

        *pcol = 12;
}

static void dram_set_max_bank(const struct chan_info *chan, u32 bw, u32 *pbank,
                              u32 *pcol)
{
        u32 *denali_ctl = chan->pctl->denali_ctl;
        u32 *denali_pi = chan->pi->denali_pi;

        clrbits_le32(&denali_ctl[191], 0xf);
        clrbits_le32(&denali_ctl[190], (3 << 16));
        /*PI_199 PI_COL_DIFF:RW:0:4*/
        clrbits_le32(&denali_pi[199], 0xf);
        /*PI_155 PI_BANK_DIFF:RW:16:2*/
        clrbits_le32(&denali_pi[155], (3 << 16));

        *pbank = 3;
        *pcol = 12;
}

static void dram_set_max_row(const struct chan_info *chan, u32 bw, u32 *prow,
                             u32 *pbank, u32 *pcol)
{
        u32 *denali_ctl = chan->pctl->denali_ctl;
        u32 *denali_pi = chan->pi->denali_pi;
        struct msch_regs *ddr_msch_regs = chan->msch;

        clrsetbits_le32(&denali_ctl[191], 0xf, 12 - 10);
        clrbits_le32(&denali_ctl[190],
                     (0x3 << 16) | (0x7 << 24));
        /*PI_199 PI_COL_DIFF:RW:0:4*/
        clrsetbits_le32(&denali_pi[199], 0xf, 12 - 10);
        /*PI_155 PI_ROW_DIFF:RW:24:3 PI_BANK_DIFF:RW:16:2*/
        clrbits_le32(&denali_pi[155],
                     (0x3 << 16) | (0x7 << 24));
        writel(1 | (1 << 8), &ddr_msch_regs->ddrconf);
        /* set max cs0 size */
        writel((4096 / 32) | ((0 / 32) << 8),
               &ddr_msch_regs->ddrsize);

        *prow = 16;
        *pbank = 3;
        *pcol = (bw == 2) ? 10 : 11;
}

static u64 dram_detect_cap(struct dram_info *dram,
                           struct rk3399_sdram_params *params,
                           unsigned char channel)
{
        const struct chan_info *chan = &dram->chan[channel];
        struct sdram_cap_info *cap_info = &params->ch[channel].cap_info;
        u32 bw;
        u32 col_tmp;
        u32 bk_tmp;
        u32 row_tmp;
        u32 cs0_cap;
        u32 training_flag;
        u32 ddrconfig;

        /* detect bw */
        bw = 2;
        if (params->base.dramtype != LPDDR4) {
                dram_set_bw(chan, bw);
                cap_info->bw = bw;
                if (data_training(dram, channel, params,
                                  PI_READ_GATE_TRAINING)) {
                        bw = 1;
                        dram_set_bw(chan, 1);
                        cap_info->bw = bw;
                        if (data_training(dram, channel, params,
                                          PI_READ_GATE_TRAINING)) {
                                printf("16bit error!!!\n");
                                goto error;
                        }
                }
        }
        /*
         * LPDDR3 CA training msut be trigger before other training.
         * DDR3 is not have CA training.
         */
        if (params->base.dramtype == LPDDR3)
                training_flag = PI_WRITE_LEVELING;
        else
                training_flag = PI_FULL_TRAINING;

        if (params->base.dramtype != LPDDR4) {
                if (data_training(dram, channel, params, training_flag)) {
                        printf("full training error!!!\n");
                        goto error;
                }
        }

        /* detect col */
        dram_set_max_col(chan, bw, &col_tmp);
        if (sdram_detect_col(cap_info, col_tmp) != 0)
                goto error;

        /* detect bank */
        dram_set_max_bank(chan, bw, &bk_tmp, &col_tmp);
        sdram_detect_bank(cap_info, col_tmp, bk_tmp);

        /* detect row */
        dram_set_max_row(chan, bw, &row_tmp, &bk_tmp, &col_tmp);
        if (sdram_detect_row(cap_info, col_tmp, bk_tmp, row_tmp) != 0)
                goto error;

        /* detect row_3_4 */
        sdram_detect_row_3_4(cap_info, col_tmp, bk_tmp);

        /* set ddrconfig */
        cs0_cap = (1 << (cap_info->cs0_row + cap_info->col + cap_info->bk +
                         cap_info->bw - 20));
        if (cap_info->row_3_4)
                cs0_cap = cs0_cap * 3 / 4;

        cap_info->cs1_row = cap_info->cs0_row;
        set_memory_map(chan, channel, params);
        ddrconfig = calculate_ddrconfig(params, channel);
        if (-1 == ddrconfig)
                goto error;
        set_ddrconfig(chan, params, channel,
                      cap_info->ddrconfig);

        /* detect cs1 row */
        sdram_detect_cs1_row(cap_info, params->base.dramtype);

        /* detect die bw */
        sdram_detect_dbw(cap_info, params->base.dramtype);

        return 0;
error:
        return (-1);
}

static unsigned char calculate_stride(struct rk3399_sdram_params *params)
{
        unsigned int gstride_type;
        unsigned int channel;
        unsigned int chinfo = 0;
        unsigned int cap = 0;
        unsigned int stride = -1;
        unsigned int ch_cap[2] = {0, 0};

        gstride_type = STRIDE_256B;

        for (channel = 0; channel < 2; channel++) {
                unsigned int cs0_cap = 0;
                unsigned int cs1_cap = 0;
                struct sdram_cap_info *cap_info =
                        &params->ch[channel].cap_info;

                if (cap_info->col == 0)
                        continue;

                cs0_cap = (1 << (cap_info->cs0_row + cap_info->col +
                                 cap_info->bk + cap_info->bw - 20));
                if (cap_info->rank > 1)
                        cs1_cap = cs0_cap >> (cap_info->cs0_row
                                              - cap_info->cs1_row);
                if (cap_info->row_3_4) {
                        cs0_cap = cs0_cap * 3 / 4;
                        cs1_cap = cs1_cap * 3 / 4;
                }
                ch_cap[channel] = cs0_cap + cs1_cap;
                chinfo |= 1 << channel;
        }

        cap = ch_cap[0] + ch_cap[1];
        if (params->base.num_channels == 1) {
                if (chinfo & 1) /* channel a only */
                        stride = 0x17;
                else /* channel b only */
                        stride = 0x18;
        } else {/* 2 channel */
                if (ch_cap[0] == ch_cap[1]) {
                        /* interleaved */
                        if (gstride_type == PART_STRIDE) {
                        /*
                         * first 64MB no interleaved other 256B interleaved
                         * if 786M+768M.useful space from 0-1280MB and
                         * 1536MB-1792MB
                         * if 1.5G+1.5G(continuous).useful space from 0-2560MB
                         * and 3072MB-3584MB
                         */
                                stride = 0x1F;
                        } else {
                                switch (cap) {
                                /* 512MB */
                                case 512:
                                        stride = 0;
                                        break;
                                /* 1GB unstride or 256B stride*/
                                case 1024:
                                        stride = (gstride_type == UN_STRIDE) ?
                                                0x1 : 0x5;
                                        break;
                                /*
                                 * 768MB + 768MB same as total 2GB memory
                                 * useful space: 0-768MB 1GB-1792MB
                                 */
                                case 1536:
                                /* 2GB unstride or 256B or 512B stride */
                                case 2048:
                                        stride = (gstride_type == UN_STRIDE) ?
                                                0x2 :
                                                ((gstride_type == STRIDE_512B) ?
                                                 0xA : 0x9);
                                        break;
                                /* 1536MB + 1536MB */
                                case 3072:
                                        stride = (gstride_type == UN_STRIDE) ?
                                                0x3 :
                                                ((gstride_type == STRIDE_512B) ?
                                                 0x12 : 0x11);
                                        break;
                                /* 4GB  unstride or 128B,256B,512B,4KB stride */
                                case 4096:
                                        stride = (gstride_type == UN_STRIDE) ?
                                                0x3 : (0xC + gstride_type);
                                        break;
                                }
                        }
                }
                if (ch_cap[0] == 2048 && ch_cap[1] == 1024) {
                        /* 2GB + 1GB */
                        stride = (gstride_type == UN_STRIDE) ? 0x3 : 0x19;
                }
                /*
                 * remain two channel capability not equal OR capability
                 * power function of 2
                 */
                if (stride == (-1)) {
                        switch ((ch_cap[0] > ch_cap[1]) ?
                                ch_cap[0] : ch_cap[1]) {
                        case 256: /* 256MB + 128MB */
                                stride = 0;
                                break;
                        case 512: /* 512MB + 256MB */
                                stride = 1;
                                break;
                        case 1024:/* 1GB + 128MB/256MB/384MB/512MB/768MB */
                                stride = 2;
                                break;
                        case 2048: /* 2GB + 128MB/256MB/384MB/512MB/768MB/1GB */
                                stride = 3;
                                break;
                        default:
                                break;
                        }
                }
                if (stride == (-1))
                        goto error;
        }

        sdram_print_stride(stride);

        return stride;
error:
        printf("Cap not support!\n");
        return (-1);
}

static void clear_channel_params(struct rk3399_sdram_params *params, u8 channel)
{
        params->ch[channel].cap_info.rank = 0;
        params->ch[channel].cap_info.col = 0;
        params->ch[channel].cap_info.bk = 0;
        params->ch[channel].cap_info.bw = 32;
        params->ch[channel].cap_info.dbw = 32;
        params->ch[channel].cap_info.row_3_4 = 0;
        params->ch[channel].cap_info.cs0_row = 0;
        params->ch[channel].cap_info.cs1_row = 0;
        params->ch[channel].cap_info.ddrconfig = 0;
}

static int sdram_init(struct dram_info *dram,
                      struct rk3399_sdram_params *params)
{
        unsigned char dramtype = params->base.dramtype;
        unsigned int ddr_freq = params->base.ddr_freq;
        int channel, ch, rank;
        u32 tmp, ret;

        debug("Starting SDRAM initialization...\n");

        if ((dramtype == DDR3 && ddr_freq > 933) ||
            (dramtype == LPDDR3 && ddr_freq > 933) ||
            (dramtype == LPDDR4 && ddr_freq > 800)) {
                debug("SDRAM frequency is to high!");
                return -E2BIG;
        }

        /* detect rank */
        for (ch = 0; ch < 2; ch++) {
                params->ch[ch].cap_info.rank = 2;
                for (rank = 2; rank != 0; rank--) {
                        for (channel = 0; channel < 2; channel++) {
                                const struct chan_info *chan =
                                        &dram->chan[channel];
                                struct rockchip_cru *cru = dram->cru;
                                struct rk3399_ddr_publ_regs *publ = chan->publ;

                                phy_pctrl_reset(cru, channel);
                                phy_dll_bypass_set(publ, ddr_freq);
                                pctl_cfg(dram, chan, channel, params);
                        }

                        /* start to trigger initialization */
                        pctl_start(dram, params, 3);

                        /* LPDDR2/LPDDR3 need to wait DAI complete, max 10us */
                        if (dramtype == LPDDR3)
                                udelay(10);

                        tmp = (rank == 2) ? 3 : 1;
                        dram_set_cs(&dram->chan[ch], tmp, 2048,
                                    params->base.dramtype);
                        params->ch[ch].cap_info.rank = rank;

                        ret = dram->ops->data_training_first(dram, ch,
                                                             rank, params);
                        if (!ret) {
                                debug("%s: data trained for rank %d, ch %d\n",
                                      __func__, rank, ch);
                                break;
                        }
                }
                /* Computed rank with associated channel number */
                params->ch[ch].cap_info.rank = rank;
        }

#if defined(CONFIG_RAM_RK3399_LPDDR4)
        /* LPDDR4 needs to be trained at 400MHz */
        lpddr4_set_rate(dram, params, 0);
        params->base.ddr_freq = dfs_cfgs_lpddr4[0].base.ddr_freq / MHz;
#endif

        params->base.num_channels = 0;
        for (channel = 0; channel < 2; channel++) {
                const struct chan_info *chan = &dram->chan[channel];
                struct sdram_cap_info *cap_info =
                        &params->ch[channel].cap_info;

                if (cap_info->rank == 0) {
                        clear_channel_params(params, 1);
                        continue;
                }

                if (IS_ENABLED(CONFIG_RAM_ROCKCHIP_DEBUG)) {
                        printf("Channel ");
                        printf(channel ? "1: " : "0: ");
                }

                if (channel == 0)
                        set_ddr_stride(dram->pmusgrf, 0x17);
                else
                        set_ddr_stride(dram->pmusgrf, 0x18);

                if (dram_detect_cap(dram, params, channel)) {
                        printf("Cap error!\n");
                        continue;
                }

                sdram_print_ddr_info(cap_info, &params->base);
                set_memory_map(chan, channel, params);
                cap_info->ddrconfig =
                        calculate_ddrconfig(params, channel);
                if (-1 == cap_info->ddrconfig) {
                        printf("no ddrconfig find, Cap not support!\n");
                        continue;
                }

                params->base.num_channels++;
                set_ddrconfig(chan, params, channel, cap_info->ddrconfig);