linux/drivers/clk/imx/clk-imx6sl.c
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   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 * Copyright 2013-2014 Freescale Semiconductor, Inc.
   4 */
   5
   6#include <linux/bits.h>
   7#include <linux/clk.h>
   8#include <linux/clkdev.h>
   9#include <linux/clk/imx.h>
  10#include <linux/err.h>
  11#include <linux/of.h>
  12#include <linux/of_address.h>
  13#include <linux/of_irq.h>
  14#include <dt-bindings/clock/imx6sl-clock.h>
  15
  16#include "clk.h"
  17
  18#define CCSR                    0xc
  19#define BM_CCSR_PLL1_SW_CLK_SEL BIT(2)
  20#define CACRR                   0x10
  21#define CDHIPR                  0x48
  22#define BM_CDHIPR_ARM_PODF_BUSY BIT(16)
  23#define ARM_WAIT_DIV_396M       2
  24#define ARM_WAIT_DIV_792M       4
  25#define ARM_WAIT_DIV_996M       6
  26
  27#define PLL_ARM                 0x0
  28#define BM_PLL_ARM_DIV_SELECT   0x7f
  29#define BM_PLL_ARM_POWERDOWN    BIT(12)
  30#define BM_PLL_ARM_ENABLE       BIT(13)
  31#define BM_PLL_ARM_LOCK         BIT(31)
  32#define PLL_ARM_DIV_792M        66
  33
  34static const char *step_sels[]          = { "osc", "pll2_pfd2", };
  35static const char *pll1_sw_sels[]       = { "pll1_sys", "step", };
  36static const char *ocram_alt_sels[]     = { "pll2_pfd2", "pll3_pfd1", };
  37static const char *ocram_sels[]         = { "periph", "ocram_alt_sels", };
  38static const char *pre_periph_sels[]    = { "pll2_bus", "pll2_pfd2", "pll2_pfd0", "pll2_198m", };
  39static const char *periph_clk2_sels[]   = { "pll3_usb_otg", "osc", "osc", "dummy", };
  40static const char *periph2_clk2_sels[]  = { "pll3_usb_otg", "pll2_bus", };
  41static const char *periph_sels[]        = { "pre_periph_sel", "periph_clk2_podf", };
  42static const char *periph2_sels[]       = { "pre_periph2_sel", "periph2_clk2_podf", };
  43static const char *csi_sels[]           = { "osc", "pll2_pfd2", "pll3_120m", "pll3_pfd1", };
  44static const char *lcdif_axi_sels[]     = { "pll2_bus", "pll2_pfd2", "pll3_usb_otg", "pll3_pfd1", };
  45static const char *usdhc_sels[]         = { "pll2_pfd2", "pll2_pfd0", };
  46static const char *ssi_sels[]           = { "pll3_pfd2", "pll3_pfd3", "pll4_audio_div", "dummy", };
  47static const char *perclk_sels[]        = { "ipg", "osc", };
  48static const char *pxp_axi_sels[]       = { "pll2_bus", "pll3_usb_otg", "pll5_video_div", "pll2_pfd0", "pll2_pfd2", "pll3_pfd3", };
  49static const char *epdc_axi_sels[]      = { "pll2_bus", "pll3_usb_otg", "pll5_video_div", "pll2_pfd0", "pll2_pfd2", "pll3_pfd2", };
  50static const char *gpu2d_ovg_sels[]     = { "pll3_pfd1", "pll3_usb_otg", "pll2_bus", "pll2_pfd2", };
  51static const char *gpu2d_sels[]         = { "pll2_pfd2", "pll3_usb_otg", "pll3_pfd1", "pll2_bus", };
  52static const char *lcdif_pix_sels[]     = { "pll2_bus", "pll3_usb_otg", "pll5_video_div", "pll2_pfd0", "pll3_pfd0", "pll3_pfd1", };
  53static const char *epdc_pix_sels[]      = { "pll2_bus", "pll3_usb_otg", "pll5_video_div", "pll2_pfd0", "pll2_pfd1", "pll3_pfd1", };
  54static const char *audio_sels[]         = { "pll4_audio_div", "pll3_pfd2", "pll3_pfd3", "pll3_usb_otg", };
  55static const char *ecspi_sels[]         = { "pll3_60m", "osc", };
  56static const char *uart_sels[]          = { "pll3_80m", "osc", };
  57static const char *lvds_sels[]          = {
  58        "pll1_sys", "pll2_bus", "pll2_pfd0", "pll2_pfd1", "pll2_pfd2", "dummy", "pll4_audio", "pll5_video",
  59        "dummy", "enet_ref", "dummy", "dummy", "pll3_usb_otg", "pll7_usb_host", "pll3_pfd0", "pll3_pfd1",
  60        "pll3_pfd2", "pll3_pfd3", "osc", "dummy", "dummy", "dummy", "dummy", "dummy",
  61         "dummy", "dummy", "dummy", "dummy", "dummy", "dummy", "dummy", "dummy",
  62};
  63static const char *pll_bypass_src_sels[] = { "osc", "lvds1_in", };
  64static const char *pll1_bypass_sels[]   = { "pll1", "pll1_bypass_src", };
  65static const char *pll2_bypass_sels[]   = { "pll2", "pll2_bypass_src", };
  66static const char *pll3_bypass_sels[]   = { "pll3", "pll3_bypass_src", };
  67static const char *pll4_bypass_sels[]   = { "pll4", "pll4_bypass_src", };
  68static const char *pll5_bypass_sels[]   = { "pll5", "pll5_bypass_src", };
  69static const char *pll6_bypass_sels[]   = { "pll6", "pll6_bypass_src", };
  70static const char *pll7_bypass_sels[]   = { "pll7", "pll7_bypass_src", };
  71
  72static const struct clk_div_table clk_enet_ref_table[] = {
  73        { .val = 0, .div = 20, },
  74        { .val = 1, .div = 10, },
  75        { .val = 2, .div = 5, },
  76        { .val = 3, .div = 4, },
  77        { }
  78};
  79
  80static const struct clk_div_table post_div_table[] = {
  81        { .val = 2, .div = 1, },
  82        { .val = 1, .div = 2, },
  83        { .val = 0, .div = 4, },
  84        { }
  85};
  86
  87static const struct clk_div_table video_div_table[] = {
  88        { .val = 0, .div = 1, },
  89        { .val = 1, .div = 2, },
  90        { .val = 2, .div = 1, },
  91        { .val = 3, .div = 4, },
  92        { }
  93};
  94
  95static unsigned int share_count_ssi1;
  96static unsigned int share_count_ssi2;
  97static unsigned int share_count_ssi3;
  98static unsigned int share_count_spdif;
  99
 100static struct clk_hw **hws;
 101static struct clk_hw_onecell_data *clk_hw_data;
 102static void __iomem *ccm_base;
 103static void __iomem *anatop_base;
 104
 105/*
 106 * ERR005311 CCM: After exit from WAIT mode, unwanted interrupt(s) taken
 107 *           during WAIT mode entry process could cause cache memory
 108 *           corruption.
 109 *
 110 * Software workaround:
 111 *     To prevent this issue from occurring, software should ensure that the
 112 * ARM to IPG clock ratio is less than 12:5 (that is < 2.4x), before
 113 * entering WAIT mode.
 114 *
 115 * This function will set the ARM clk to max value within the 12:5 limit.
 116 * As IPG clock is fixed at 66MHz(so ARM freq must not exceed 158.4MHz),
 117 * ARM freq are one of below setpoints: 396MHz, 792MHz and 996MHz, since
 118 * the clk APIs can NOT be called in idle thread(may cause kernel schedule
 119 * as there is sleep function in PLL wait function), so here we just slow
 120 * down ARM to below freq according to previous freq:
 121 *
 122 * run mode      wait mode
 123 * 396MHz   ->   132MHz;
 124 * 792MHz   ->   158.4MHz;
 125 * 996MHz   ->   142.3MHz;
 126 */
 127static int imx6sl_get_arm_divider_for_wait(void)
 128{
 129        if (readl_relaxed(ccm_base + CCSR) & BM_CCSR_PLL1_SW_CLK_SEL) {
 130                return ARM_WAIT_DIV_396M;
 131        } else {
 132                if ((readl_relaxed(anatop_base + PLL_ARM) &
 133                        BM_PLL_ARM_DIV_SELECT) == PLL_ARM_DIV_792M)
 134                        return ARM_WAIT_DIV_792M;
 135                else
 136                        return ARM_WAIT_DIV_996M;
 137        }
 138}
 139
 140static void imx6sl_enable_pll_arm(bool enable)
 141{
 142        static u32 saved_pll_arm;
 143        u32 val;
 144
 145        if (enable) {
 146                saved_pll_arm = val = readl_relaxed(anatop_base + PLL_ARM);
 147                val |= BM_PLL_ARM_ENABLE;
 148                val &= ~BM_PLL_ARM_POWERDOWN;
 149                writel_relaxed(val, anatop_base + PLL_ARM);
 150                while (!(readl_relaxed(anatop_base + PLL_ARM) & BM_PLL_ARM_LOCK))
 151                        ;
 152        } else {
 153                 writel_relaxed(saved_pll_arm, anatop_base + PLL_ARM);
 154        }
 155}
 156
 157void imx6sl_set_wait_clk(bool enter)
 158{
 159        static unsigned long saved_arm_div;
 160        int arm_div_for_wait = imx6sl_get_arm_divider_for_wait();
 161
 162        /*
 163         * According to hardware design, arm podf change need
 164         * PLL1 clock enabled.
 165         */
 166        if (arm_div_for_wait == ARM_WAIT_DIV_396M)
 167                imx6sl_enable_pll_arm(true);
 168
 169        if (enter) {
 170                saved_arm_div = readl_relaxed(ccm_base + CACRR);
 171                writel_relaxed(arm_div_for_wait, ccm_base + CACRR);
 172        } else {
 173                writel_relaxed(saved_arm_div, ccm_base + CACRR);
 174        }
 175        while (__raw_readl(ccm_base + CDHIPR) & BM_CDHIPR_ARM_PODF_BUSY)
 176                ;
 177
 178        if (arm_div_for_wait == ARM_WAIT_DIV_396M)
 179                imx6sl_enable_pll_arm(false);
 180}
 181
 182static void __init imx6sl_clocks_init(struct device_node *ccm_node)
 183{
 184        struct device_node *np;
 185        void __iomem *base;
 186        int ret;
 187
 188        clk_hw_data = kzalloc(struct_size(clk_hw_data, hws,
 189                                          IMX6SL_CLK_END), GFP_KERNEL);
 190        if (WARN_ON(!clk_hw_data))
 191                return;
 192
 193        clk_hw_data->num = IMX6SL_CLK_END;
 194        hws = clk_hw_data->hws;
 195
 196        hws[IMX6SL_CLK_DUMMY] = imx_clk_hw_fixed("dummy", 0);
 197        hws[IMX6SL_CLK_CKIL] = imx_obtain_fixed_clock_hw("ckil", 0);
 198        hws[IMX6SL_CLK_OSC] = imx_obtain_fixed_clock_hw("osc", 0);
 199        /* Clock source from external clock via CLK1 PAD */
 200        hws[IMX6SL_CLK_ANACLK1] = imx_obtain_fixed_clock_hw("anaclk1", 0);
 201
 202        np = of_find_compatible_node(NULL, NULL, "fsl,imx6sl-anatop");
 203        base = of_iomap(np, 0);
 204        WARN_ON(!base);
 205        of_node_put(np);
 206        anatop_base = base;
 207
 208        hws[IMX6SL_PLL1_BYPASS_SRC] = imx_clk_hw_mux("pll1_bypass_src", base + 0x00, 14, 1, pll_bypass_src_sels, ARRAY_SIZE(pll_bypass_src_sels));
 209        hws[IMX6SL_PLL2_BYPASS_SRC] = imx_clk_hw_mux("pll2_bypass_src", base + 0x30, 14, 1, pll_bypass_src_sels, ARRAY_SIZE(pll_bypass_src_sels));
 210        hws[IMX6SL_PLL3_BYPASS_SRC] = imx_clk_hw_mux("pll3_bypass_src", base + 0x10, 14, 1, pll_bypass_src_sels, ARRAY_SIZE(pll_bypass_src_sels));
 211        hws[IMX6SL_PLL4_BYPASS_SRC] = imx_clk_hw_mux("pll4_bypass_src", base + 0x70, 14, 1, pll_bypass_src_sels, ARRAY_SIZE(pll_bypass_src_sels));
 212        hws[IMX6SL_PLL5_BYPASS_SRC] = imx_clk_hw_mux("pll5_bypass_src", base + 0xa0, 14, 1, pll_bypass_src_sels, ARRAY_SIZE(pll_bypass_src_sels));
 213        hws[IMX6SL_PLL6_BYPASS_SRC] = imx_clk_hw_mux("pll6_bypass_src", base + 0xe0, 14, 1, pll_bypass_src_sels, ARRAY_SIZE(pll_bypass_src_sels));
 214        hws[IMX6SL_PLL7_BYPASS_SRC] = imx_clk_hw_mux("pll7_bypass_src", base + 0x20, 14, 1, pll_bypass_src_sels, ARRAY_SIZE(pll_bypass_src_sels));
 215
 216        /*                                    type               name    parent_name        base         div_mask */
 217        hws[IMX6SL_CLK_PLL1] = imx_clk_hw_pllv3(IMX_PLLV3_SYS,     "pll1", "osc", base + 0x00, 0x7f);
 218        hws[IMX6SL_CLK_PLL2] = imx_clk_hw_pllv3(IMX_PLLV3_GENERIC, "pll2", "osc", base + 0x30, 0x1);
 219        hws[IMX6SL_CLK_PLL3] = imx_clk_hw_pllv3(IMX_PLLV3_USB,     "pll3", "osc", base + 0x10, 0x3);
 220        hws[IMX6SL_CLK_PLL4] = imx_clk_hw_pllv3(IMX_PLLV3_AV,      "pll4", "osc", base + 0x70, 0x7f);
 221        hws[IMX6SL_CLK_PLL5] = imx_clk_hw_pllv3(IMX_PLLV3_AV,      "pll5", "osc", base + 0xa0, 0x7f);
 222        hws[IMX6SL_CLK_PLL6] = imx_clk_hw_pllv3(IMX_PLLV3_ENET,    "pll6", "osc", base + 0xe0, 0x3);
 223        hws[IMX6SL_CLK_PLL7] = imx_clk_hw_pllv3(IMX_PLLV3_USB,     "pll7", "osc", base + 0x20, 0x3);
 224
 225        hws[IMX6SL_PLL1_BYPASS] = imx_clk_hw_mux_flags("pll1_bypass", base + 0x00, 16, 1, pll1_bypass_sels, ARRAY_SIZE(pll1_bypass_sels), CLK_SET_RATE_PARENT);
 226        hws[IMX6SL_PLL2_BYPASS] = imx_clk_hw_mux_flags("pll2_bypass", base + 0x30, 16, 1, pll2_bypass_sels, ARRAY_SIZE(pll2_bypass_sels), CLK_SET_RATE_PARENT);
 227        hws[IMX6SL_PLL3_BYPASS] = imx_clk_hw_mux_flags("pll3_bypass", base + 0x10, 16, 1, pll3_bypass_sels, ARRAY_SIZE(pll3_bypass_sels), CLK_SET_RATE_PARENT);
 228        hws[IMX6SL_PLL4_BYPASS] = imx_clk_hw_mux_flags("pll4_bypass", base + 0x70, 16, 1, pll4_bypass_sels, ARRAY_SIZE(pll4_bypass_sels), CLK_SET_RATE_PARENT);
 229        hws[IMX6SL_PLL5_BYPASS] = imx_clk_hw_mux_flags("pll5_bypass", base + 0xa0, 16, 1, pll5_bypass_sels, ARRAY_SIZE(pll5_bypass_sels), CLK_SET_RATE_PARENT);
 230        hws[IMX6SL_PLL6_BYPASS] = imx_clk_hw_mux_flags("pll6_bypass", base + 0xe0, 16, 1, pll6_bypass_sels, ARRAY_SIZE(pll6_bypass_sels), CLK_SET_RATE_PARENT);
 231        hws[IMX6SL_PLL7_BYPASS] = imx_clk_hw_mux_flags("pll7_bypass", base + 0x20, 16, 1, pll7_bypass_sels, ARRAY_SIZE(pll7_bypass_sels), CLK_SET_RATE_PARENT);
 232
 233        /* Do not bypass PLLs initially */
 234        clk_set_parent(hws[IMX6SL_PLL1_BYPASS]->clk, hws[IMX6SL_CLK_PLL1]->clk);
 235        clk_set_parent(hws[IMX6SL_PLL2_BYPASS]->clk, hws[IMX6SL_CLK_PLL2]->clk);
 236        clk_set_parent(hws[IMX6SL_PLL3_BYPASS]->clk, hws[IMX6SL_CLK_PLL3]->clk);
 237        clk_set_parent(hws[IMX6SL_PLL4_BYPASS]->clk, hws[IMX6SL_CLK_PLL4]->clk);
 238        clk_set_parent(hws[IMX6SL_PLL5_BYPASS]->clk, hws[IMX6SL_CLK_PLL5]->clk);
 239        clk_set_parent(hws[IMX6SL_PLL6_BYPASS]->clk, hws[IMX6SL_CLK_PLL6]->clk);
 240        clk_set_parent(hws[IMX6SL_PLL7_BYPASS]->clk, hws[IMX6SL_CLK_PLL7]->clk);
 241
 242        hws[IMX6SL_CLK_PLL1_SYS]      = imx_clk_hw_gate("pll1_sys",      "pll1_bypass", base + 0x00, 13);
 243        hws[IMX6SL_CLK_PLL2_BUS]      = imx_clk_hw_gate("pll2_bus",      "pll2_bypass", base + 0x30, 13);
 244        hws[IMX6SL_CLK_PLL3_USB_OTG]  = imx_clk_hw_gate("pll3_usb_otg",  "pll3_bypass", base + 0x10, 13);
 245        hws[IMX6SL_CLK_PLL4_AUDIO]    = imx_clk_hw_gate("pll4_audio",    "pll4_bypass", base + 0x70, 13);
 246        hws[IMX6SL_CLK_PLL5_VIDEO]    = imx_clk_hw_gate("pll5_video",    "pll5_bypass", base + 0xa0, 13);
 247        hws[IMX6SL_CLK_PLL6_ENET]     = imx_clk_hw_gate("pll6_enet",     "pll6_bypass", base + 0xe0, 13);
 248        hws[IMX6SL_CLK_PLL7_USB_HOST] = imx_clk_hw_gate("pll7_usb_host", "pll7_bypass", base + 0x20, 13);
 249
 250        hws[IMX6SL_CLK_LVDS1_SEL] = imx_clk_hw_mux("lvds1_sel", base + 0x160, 0, 5, lvds_sels, ARRAY_SIZE(lvds_sels));
 251        hws[IMX6SL_CLK_LVDS1_OUT] = imx_clk_hw_gate_exclusive("lvds1_out", "lvds1_sel", base + 0x160, 10, BIT(12));
 252        hws[IMX6SL_CLK_LVDS1_IN] = imx_clk_hw_gate_exclusive("lvds1_in", "anaclk1", base + 0x160, 12, BIT(10));
 253
 254        /*
 255         * usbphy1 and usbphy2 are implemented as dummy gates using reserve
 256         * bit 20.  They are used by phy driver to keep the refcount of
 257         * parent PLL correct. usbphy1_gate and usbphy2_gate only needs to be
 258         * turned on during boot, and software will not need to control it
 259         * anymore after that.
 260         */
 261        hws[IMX6SL_CLK_USBPHY1]      = imx_clk_hw_gate("usbphy1",      "pll3_usb_otg",  base + 0x10, 20);
 262        hws[IMX6SL_CLK_USBPHY2]      = imx_clk_hw_gate("usbphy2",      "pll7_usb_host", base + 0x20, 20);
 263        hws[IMX6SL_CLK_USBPHY1_GATE] = imx_clk_hw_gate("usbphy1_gate", "dummy",         base + 0x10, 6);
 264        hws[IMX6SL_CLK_USBPHY2_GATE] = imx_clk_hw_gate("usbphy2_gate", "dummy",         base + 0x20, 6);
 265
 266        /*                                                           dev   name              parent_name      flags                reg        shift width div: flags, div_table lock */
 267        hws[IMX6SL_CLK_PLL4_POST_DIV]  = clk_hw_register_divider_table(NULL, "pll4_post_div",  "pll4_audio",    CLK_SET_RATE_PARENT, base + 0x70,  19, 2,   0, post_div_table, &imx_ccm_lock);
 268        hws[IMX6SL_CLK_PLL4_AUDIO_DIV] =       clk_hw_register_divider(NULL, "pll4_audio_div", "pll4_post_div", CLK_SET_RATE_PARENT, base + 0x170, 15, 1,   0, &imx_ccm_lock);
 269        hws[IMX6SL_CLK_PLL5_POST_DIV]  = clk_hw_register_divider_table(NULL, "pll5_post_div",  "pll5_video",    CLK_SET_RATE_PARENT, base + 0xa0,  19, 2,   0, post_div_table, &imx_ccm_lock);
 270        hws[IMX6SL_CLK_PLL5_VIDEO_DIV] = clk_hw_register_divider_table(NULL, "pll5_video_div", "pll5_post_div", CLK_SET_RATE_PARENT, base + 0x170, 30, 2,   0, video_div_table, &imx_ccm_lock);
 271        hws[IMX6SL_CLK_ENET_REF]       = clk_hw_register_divider_table(NULL, "enet_ref",       "pll6_enet",     0,                   base + 0xe0,  0,  2,   0, clk_enet_ref_table, &imx_ccm_lock);
 272
 273        /*                                       name         parent_name     reg           idx */
 274        hws[IMX6SL_CLK_PLL2_PFD0] = imx_clk_hw_pfd("pll2_pfd0", "pll2_bus",     base + 0x100, 0);
 275        hws[IMX6SL_CLK_PLL2_PFD1] = imx_clk_hw_pfd("pll2_pfd1", "pll2_bus",     base + 0x100, 1);
 276        hws[IMX6SL_CLK_PLL2_PFD2] = imx_clk_hw_pfd("pll2_pfd2", "pll2_bus",     base + 0x100, 2);
 277        hws[IMX6SL_CLK_PLL3_PFD0] = imx_clk_hw_pfd("pll3_pfd0", "pll3_usb_otg", base + 0xf0,  0);
 278        hws[IMX6SL_CLK_PLL3_PFD1] = imx_clk_hw_pfd("pll3_pfd1", "pll3_usb_otg", base + 0xf0,  1);
 279        hws[IMX6SL_CLK_PLL3_PFD2] = imx_clk_hw_pfd("pll3_pfd2", "pll3_usb_otg", base + 0xf0,  2);
 280        hws[IMX6SL_CLK_PLL3_PFD3] = imx_clk_hw_pfd("pll3_pfd3", "pll3_usb_otg", base + 0xf0,  3);
 281
 282        /*                                                name         parent_name     mult div */
 283        hws[IMX6SL_CLK_PLL2_198M] = imx_clk_hw_fixed_factor("pll2_198m", "pll2_pfd2",      1, 2);
 284        hws[IMX6SL_CLK_PLL3_120M] = imx_clk_hw_fixed_factor("pll3_120m", "pll3_usb_otg",   1, 4);
 285        hws[IMX6SL_CLK_PLL3_80M]  = imx_clk_hw_fixed_factor("pll3_80m",  "pll3_usb_otg",   1, 6);
 286        hws[IMX6SL_CLK_PLL3_60M]  = imx_clk_hw_fixed_factor("pll3_60m",  "pll3_usb_otg",   1, 8);
 287
 288        np = ccm_node;
 289        base = of_iomap(np, 0);
 290        WARN_ON(!base);
 291        ccm_base = base;
 292
 293        /*                                              name                reg       shift width parent_names     num_parents */
 294        hws[IMX6SL_CLK_STEP]             = imx_clk_hw_mux("step",             base + 0xc,  8,  1, step_sels,         ARRAY_SIZE(step_sels));
 295        hws[IMX6SL_CLK_PLL1_SW]          = imx_clk_hw_mux("pll1_sw",          base + 0xc,  2,  1, pll1_sw_sels,      ARRAY_SIZE(pll1_sw_sels));
 296        hws[IMX6SL_CLK_OCRAM_ALT_SEL]    = imx_clk_hw_mux("ocram_alt_sel",    base + 0x14, 7,  1, ocram_alt_sels,    ARRAY_SIZE(ocram_alt_sels));
 297        hws[IMX6SL_CLK_OCRAM_SEL]        = imx_clk_hw_mux("ocram_sel",        base + 0x14, 6,  1, ocram_sels,        ARRAY_SIZE(ocram_sels));
 298        hws[IMX6SL_CLK_PRE_PERIPH2_SEL]  = imx_clk_hw_mux("pre_periph2_sel",  base + 0x18, 21, 2, pre_periph_sels,   ARRAY_SIZE(pre_periph_sels));
 299        hws[IMX6SL_CLK_PRE_PERIPH_SEL]   = imx_clk_hw_mux("pre_periph_sel",   base + 0x18, 18, 2, pre_periph_sels,   ARRAY_SIZE(pre_periph_sels));
 300        hws[IMX6SL_CLK_PERIPH2_CLK2_SEL] = imx_clk_hw_mux("periph2_clk2_sel", base + 0x18, 20, 1, periph2_clk2_sels, ARRAY_SIZE(periph2_clk2_sels));
 301        hws[IMX6SL_CLK_PERIPH_CLK2_SEL]  = imx_clk_hw_mux("periph_clk2_sel",  base + 0x18, 12, 2, periph_clk2_sels,  ARRAY_SIZE(periph_clk2_sels));
 302        hws[IMX6SL_CLK_CSI_SEL]          = imx_clk_hw_mux("csi_sel",          base + 0x3c, 9,  2, csi_sels,          ARRAY_SIZE(csi_sels));
 303        hws[IMX6SL_CLK_LCDIF_AXI_SEL]    = imx_clk_hw_mux("lcdif_axi_sel",    base + 0x3c, 14, 2, lcdif_axi_sels,    ARRAY_SIZE(lcdif_axi_sels));
 304        hws[IMX6SL_CLK_USDHC1_SEL]       = imx_clk_hw_fixup_mux("usdhc1_sel", base + 0x1c, 16, 1, usdhc_sels,        ARRAY_SIZE(usdhc_sels),  imx_cscmr1_fixup);
 305        hws[IMX6SL_CLK_USDHC2_SEL]       = imx_clk_hw_fixup_mux("usdhc2_sel", base + 0x1c, 17, 1, usdhc_sels,        ARRAY_SIZE(usdhc_sels),  imx_cscmr1_fixup);
 306        hws[IMX6SL_CLK_USDHC3_SEL]       = imx_clk_hw_fixup_mux("usdhc3_sel", base + 0x1c, 18, 1, usdhc_sels,        ARRAY_SIZE(usdhc_sels),  imx_cscmr1_fixup);
 307        hws[IMX6SL_CLK_USDHC4_SEL]       = imx_clk_hw_fixup_mux("usdhc4_sel", base + 0x1c, 19, 1, usdhc_sels,        ARRAY_SIZE(usdhc_sels),  imx_cscmr1_fixup);
 308        hws[IMX6SL_CLK_SSI1_SEL]         = imx_clk_hw_fixup_mux("ssi1_sel",   base + 0x1c, 10, 2, ssi_sels,          ARRAY_SIZE(ssi_sels),    imx_cscmr1_fixup);
 309        hws[IMX6SL_CLK_SSI2_SEL]         = imx_clk_hw_fixup_mux("ssi2_sel",   base + 0x1c, 12, 2, ssi_sels,          ARRAY_SIZE(ssi_sels),    imx_cscmr1_fixup);
 310        hws[IMX6SL_CLK_SSI3_SEL]         = imx_clk_hw_fixup_mux("ssi3_sel",   base + 0x1c, 14, 2, ssi_sels,          ARRAY_SIZE(ssi_sels),    imx_cscmr1_fixup);
 311        hws[IMX6SL_CLK_PERCLK_SEL]       = imx_clk_hw_fixup_mux("perclk_sel", base + 0x1c, 6,  1, perclk_sels,       ARRAY_SIZE(perclk_sels), imx_cscmr1_fixup);
 312        hws[IMX6SL_CLK_PXP_AXI_SEL]      = imx_clk_hw_mux("pxp_axi_sel",      base + 0x34, 6,  3, pxp_axi_sels,      ARRAY_SIZE(pxp_axi_sels));
 313        hws[IMX6SL_CLK_EPDC_AXI_SEL]     = imx_clk_hw_mux("epdc_axi_sel",     base + 0x34, 15, 3, epdc_axi_sels,     ARRAY_SIZE(epdc_axi_sels));
 314        hws[IMX6SL_CLK_GPU2D_OVG_SEL]    = imx_clk_hw_mux("gpu2d_ovg_sel",    base + 0x18, 4,  2, gpu2d_ovg_sels,    ARRAY_SIZE(gpu2d_ovg_sels));
 315        hws[IMX6SL_CLK_GPU2D_SEL]        = imx_clk_hw_mux("gpu2d_sel",        base + 0x18, 8,  2, gpu2d_sels,        ARRAY_SIZE(gpu2d_sels));
 316        hws[IMX6SL_CLK_LCDIF_PIX_SEL]    = imx_clk_hw_mux("lcdif_pix_sel",    base + 0x38, 6,  3, lcdif_pix_sels,    ARRAY_SIZE(lcdif_pix_sels));
 317        hws[IMX6SL_CLK_EPDC_PIX_SEL]     = imx_clk_hw_mux("epdc_pix_sel",     base + 0x38, 15, 3, epdc_pix_sels,     ARRAY_SIZE(epdc_pix_sels));
 318        hws[IMX6SL_CLK_SPDIF0_SEL]       = imx_clk_hw_mux("spdif0_sel",       base + 0x30, 20, 2, audio_sels,        ARRAY_SIZE(audio_sels));
 319        hws[IMX6SL_CLK_SPDIF1_SEL]       = imx_clk_hw_mux("spdif1_sel",       base + 0x30, 7,  2, audio_sels,        ARRAY_SIZE(audio_sels));
 320        hws[IMX6SL_CLK_EXTERN_AUDIO_SEL] = imx_clk_hw_mux("extern_audio_sel", base + 0x20, 19, 2, audio_sels,        ARRAY_SIZE(audio_sels));
 321        hws[IMX6SL_CLK_ECSPI_SEL]        = imx_clk_hw_mux("ecspi_sel",        base + 0x38, 18, 1, ecspi_sels,        ARRAY_SIZE(ecspi_sels));
 322        hws[IMX6SL_CLK_UART_SEL]         = imx_clk_hw_mux("uart_sel",         base + 0x24, 6,  1, uart_sels,         ARRAY_SIZE(uart_sels));
 323
 324        /*                                          name       reg        shift width busy: reg, shift parent_names  num_parents */
 325        hws[IMX6SL_CLK_PERIPH]  = imx_clk_hw_busy_mux("periph",  base + 0x14, 25,  1,   base + 0x48, 5,  periph_sels,  ARRAY_SIZE(periph_sels));
 326        hws[IMX6SL_CLK_PERIPH2] = imx_clk_hw_busy_mux("periph2", base + 0x14, 26,  1,   base + 0x48, 3,  periph2_sels, ARRAY_SIZE(periph2_sels));
 327
 328        /*                                                   name                 parent_name          reg       shift width */
 329        hws[IMX6SL_CLK_OCRAM_PODF]        = imx_clk_hw_busy_divider("ocram_podf",   "ocram_sel",         base + 0x14, 16, 3, base + 0x48, 0);
 330        hws[IMX6SL_CLK_PERIPH_CLK2_PODF]  = imx_clk_hw_divider("periph_clk2_podf",  "periph_clk2_sel",   base + 0x14, 27, 3);
 331        hws[IMX6SL_CLK_PERIPH2_CLK2_PODF] = imx_clk_hw_divider("periph2_clk2_podf", "periph2_clk2_sel",  base + 0x14, 0,  3);
 332        hws[IMX6SL_CLK_IPG]               = imx_clk_hw_divider("ipg",               "ahb",               base + 0x14, 8,  2);
 333        hws[IMX6SL_CLK_CSI_PODF]          = imx_clk_hw_divider("csi_podf",          "csi_sel",           base + 0x3c, 11, 3);
 334        hws[IMX6SL_CLK_LCDIF_AXI_PODF]    = imx_clk_hw_divider("lcdif_axi_podf",    "lcdif_axi_sel",     base + 0x3c, 16, 3);
 335        hws[IMX6SL_CLK_USDHC1_PODF]       = imx_clk_hw_divider("usdhc1_podf",       "usdhc1_sel",        base + 0x24, 11, 3);
 336        hws[IMX6SL_CLK_USDHC2_PODF]       = imx_clk_hw_divider("usdhc2_podf",       "usdhc2_sel",        base + 0x24, 16, 3);
 337        hws[IMX6SL_CLK_USDHC3_PODF]       = imx_clk_hw_divider("usdhc3_podf",       "usdhc3_sel",        base + 0x24, 19, 3);
 338        hws[IMX6SL_CLK_USDHC4_PODF]       = imx_clk_hw_divider("usdhc4_podf",       "usdhc4_sel",        base + 0x24, 22, 3);
 339        hws[IMX6SL_CLK_SSI1_PRED]         = imx_clk_hw_divider("ssi1_pred",         "ssi1_sel",          base + 0x28, 6,  3);
 340        hws[IMX6SL_CLK_SSI1_PODF]         = imx_clk_hw_divider("ssi1_podf",         "ssi1_pred",         base + 0x28, 0,  6);
 341        hws[IMX6SL_CLK_SSI2_PRED]         = imx_clk_hw_divider("ssi2_pred",         "ssi2_sel",          base + 0x2c, 6,  3);
 342        hws[IMX6SL_CLK_SSI2_PODF]         = imx_clk_hw_divider("ssi2_podf",         "ssi2_pred",         base + 0x2c, 0,  6);
 343        hws[IMX6SL_CLK_SSI3_PRED]         = imx_clk_hw_divider("ssi3_pred",         "ssi3_sel",          base + 0x28, 22, 3);
 344        hws[IMX6SL_CLK_SSI3_PODF]         = imx_clk_hw_divider("ssi3_podf",         "ssi3_pred",         base + 0x28, 16, 6);
 345        hws[IMX6SL_CLK_PERCLK]            = imx_clk_hw_fixup_divider("perclk",      "perclk_sel",        base + 0x1c, 0,  6, imx_cscmr1_fixup);
 346        hws[IMX6SL_CLK_PXP_AXI_PODF]      = imx_clk_hw_divider("pxp_axi_podf",      "pxp_axi_sel",       base + 0x34, 3,  3);
 347        hws[IMX6SL_CLK_EPDC_AXI_PODF]     = imx_clk_hw_divider("epdc_axi_podf",     "epdc_axi_sel",      base + 0x34, 12, 3);
 348        hws[IMX6SL_CLK_GPU2D_OVG_PODF]    = imx_clk_hw_divider("gpu2d_ovg_podf",    "gpu2d_ovg_sel",     base + 0x18, 26, 3);
 349        hws[IMX6SL_CLK_GPU2D_PODF]        = imx_clk_hw_divider("gpu2d_podf",        "gpu2d_sel",         base + 0x18, 29, 3);
 350        hws[IMX6SL_CLK_LCDIF_PIX_PRED]    = imx_clk_hw_divider("lcdif_pix_pred",    "lcdif_pix_sel",     base + 0x38, 3,  3);
 351        hws[IMX6SL_CLK_EPDC_PIX_PRED]     = imx_clk_hw_divider("epdc_pix_pred",     "epdc_pix_sel",      base + 0x38, 12, 3);
 352        hws[IMX6SL_CLK_LCDIF_PIX_PODF]    = imx_clk_hw_fixup_divider("lcdif_pix_podf", "lcdif_pix_pred", base + 0x1c, 20, 3, imx_cscmr1_fixup);
 353        hws[IMX6SL_CLK_EPDC_PIX_PODF]     = imx_clk_hw_divider("epdc_pix_podf",     "epdc_pix_pred",     base + 0x18, 23, 3);
 354        hws[IMX6SL_CLK_SPDIF0_PRED]       = imx_clk_hw_divider("spdif0_pred",       "spdif0_sel",        base + 0x30, 25, 3);
 355        hws[IMX6SL_CLK_SPDIF0_PODF]       = imx_clk_hw_divider("spdif0_podf",       "spdif0_pred",       base + 0x30, 22, 3);
 356        hws[IMX6SL_CLK_SPDIF1_PRED]       = imx_clk_hw_divider("spdif1_pred",       "spdif1_sel",        base + 0x30, 12, 3);
 357        hws[IMX6SL_CLK_SPDIF1_PODF]       = imx_clk_hw_divider("spdif1_podf",       "spdif1_pred",       base + 0x30, 9,  3);
 358        hws[IMX6SL_CLK_EXTERN_AUDIO_PRED] = imx_clk_hw_divider("extern_audio_pred", "extern_audio_sel",  base + 0x28, 9,  3);
 359        hws[IMX6SL_CLK_EXTERN_AUDIO_PODF] = imx_clk_hw_divider("extern_audio_podf", "extern_audio_pred", base + 0x28, 25, 3);
 360        hws[IMX6SL_CLK_ECSPI_ROOT]        = imx_clk_hw_divider("ecspi_root",        "ecspi_sel",         base + 0x38, 19, 6);
 361        hws[IMX6SL_CLK_UART_ROOT]         = imx_clk_hw_divider("uart_root",         "uart_sel",          base + 0x24, 0,  6);
 362
 363        /*                                                name         parent_name reg       shift width busy: reg, shift */
 364        hws[IMX6SL_CLK_AHB]       = imx_clk_hw_busy_divider("ahb",       "periph",  base + 0x14, 10, 3,    base + 0x48, 1);
 365        hws[IMX6SL_CLK_MMDC_ROOT] = imx_clk_hw_busy_divider("mmdc",      "periph2", base + 0x14, 3,  3,    base + 0x48, 2);
 366        hws[IMX6SL_CLK_ARM]       = imx_clk_hw_busy_divider("arm",       "pll1_sw", base + 0x10, 0,  3,    base + 0x48, 16);
 367
 368        /*                                            name            parent_name          reg         shift */
 369        hws[IMX6SL_CLK_ECSPI1]       = imx_clk_hw_gate2("ecspi1",       "ecspi_root",        base + 0x6c, 0);
 370        hws[IMX6SL_CLK_ECSPI2]       = imx_clk_hw_gate2("ecspi2",       "ecspi_root",        base + 0x6c, 2);
 371        hws[IMX6SL_CLK_ECSPI3]       = imx_clk_hw_gate2("ecspi3",       "ecspi_root",        base + 0x6c, 4);
 372        hws[IMX6SL_CLK_ECSPI4]       = imx_clk_hw_gate2("ecspi4",       "ecspi_root",        base + 0x6c, 6);
 373        hws[IMX6SL_CLK_ENET]         = imx_clk_hw_gate2("enet",         "ipg",               base + 0x6c, 10);
 374        hws[IMX6SL_CLK_EPIT1]        = imx_clk_hw_gate2("epit1",        "perclk",            base + 0x6c, 12);
 375        hws[IMX6SL_CLK_EPIT2]        = imx_clk_hw_gate2("epit2",        "perclk",            base + 0x6c, 14);
 376        hws[IMX6SL_CLK_EXTERN_AUDIO] = imx_clk_hw_gate2("extern_audio", "extern_audio_podf", base + 0x6c, 16);
 377        hws[IMX6SL_CLK_GPT]          = imx_clk_hw_gate2("gpt",          "perclk",            base + 0x6c, 20);
 378        hws[IMX6SL_CLK_GPT_SERIAL]   = imx_clk_hw_gate2("gpt_serial",   "perclk",            base + 0x6c, 22);
 379        hws[IMX6SL_CLK_GPU2D_OVG]    = imx_clk_hw_gate2("gpu2d_ovg",    "gpu2d_ovg_podf",    base + 0x6c, 26);
 380        hws[IMX6SL_CLK_I2C1]         = imx_clk_hw_gate2("i2c1",         "perclk",            base + 0x70, 6);
 381        hws[IMX6SL_CLK_I2C2]         = imx_clk_hw_gate2("i2c2",         "perclk",            base + 0x70, 8);
 382        hws[IMX6SL_CLK_I2C3]         = imx_clk_hw_gate2("i2c3",         "perclk",            base + 0x70, 10);
 383        hws[IMX6SL_CLK_OCOTP]        = imx_clk_hw_gate2("ocotp",        "ipg",               base + 0x70, 12);
 384        hws[IMX6SL_CLK_CSI]          = imx_clk_hw_gate2("csi",          "csi_podf",          base + 0x74, 0);
 385        hws[IMX6SL_CLK_PXP_AXI]      = imx_clk_hw_gate2("pxp_axi",      "pxp_axi_podf",      base + 0x74, 2);
 386        hws[IMX6SL_CLK_EPDC_AXI]     = imx_clk_hw_gate2("epdc_axi",     "epdc_axi_podf",     base + 0x74, 4);
 387        hws[IMX6SL_CLK_LCDIF_AXI]    = imx_clk_hw_gate2("lcdif_axi",    "lcdif_axi_podf",    base + 0x74, 6);
 388        hws[IMX6SL_CLK_LCDIF_PIX]    = imx_clk_hw_gate2("lcdif_pix",    "lcdif_pix_podf",    base + 0x74, 8);
 389        hws[IMX6SL_CLK_EPDC_PIX]     = imx_clk_hw_gate2("epdc_pix",     "epdc_pix_podf",     base + 0x74, 10);
 390        hws[IMX6SL_CLK_MMDC_P0_IPG]  = imx_clk_hw_gate2_flags("mmdc_p0_ipg",  "ipg",         base + 0x74, 24, CLK_IS_CRITICAL);
 391        hws[IMX6SL_CLK_MMDC_P1_IPG]  = imx_clk_hw_gate2("mmdc_p1_ipg",  "ipg",               base + 0x74, 26);
 392        hws[IMX6SL_CLK_OCRAM]        = imx_clk_hw_gate2("ocram",        "ocram_podf",        base + 0x74, 28);
 393        hws[IMX6SL_CLK_PWM1]         = imx_clk_hw_gate2("pwm1",         "perclk",            base + 0x78, 16);
 394        hws[IMX6SL_CLK_PWM2]         = imx_clk_hw_gate2("pwm2",         "perclk",            base + 0x78, 18);
 395        hws[IMX6SL_CLK_PWM3]         = imx_clk_hw_gate2("pwm3",         "perclk",            base + 0x78, 20);
 396        hws[IMX6SL_CLK_PWM4]         = imx_clk_hw_gate2("pwm4",         "perclk",            base + 0x78, 22);
 397        hws[IMX6SL_CLK_SDMA]         = imx_clk_hw_gate2("sdma",         "ipg",               base + 0x7c, 6);
 398        hws[IMX6SL_CLK_SPBA]         = imx_clk_hw_gate2("spba",         "ipg",               base + 0x7c, 12);
 399        hws[IMX6SL_CLK_SPDIF]        = imx_clk_hw_gate2_shared("spdif",     "spdif0_podf",   base + 0x7c, 14, &share_count_spdif);
 400        hws[IMX6SL_CLK_SPDIF_GCLK]   = imx_clk_hw_gate2_shared("spdif_gclk",  "ipg",         base + 0x7c, 14, &share_count_spdif);
 401        hws[IMX6SL_CLK_SSI1_IPG]     = imx_clk_hw_gate2_shared("ssi1_ipg",     "ipg",        base + 0x7c, 18, &share_count_ssi1);
 402        hws[IMX6SL_CLK_SSI2_IPG]     = imx_clk_hw_gate2_shared("ssi2_ipg",     "ipg",        base + 0x7c, 20, &share_count_ssi2);
 403        hws[IMX6SL_CLK_SSI3_IPG]     = imx_clk_hw_gate2_shared("ssi3_ipg",     "ipg",        base + 0x7c, 22, &share_count_ssi3);
 404        hws[IMX6SL_CLK_SSI1]         = imx_clk_hw_gate2_shared("ssi1",         "ssi1_podf",  base + 0x7c, 18, &share_count_ssi1);
 405        hws[IMX6SL_CLK_SSI2]         = imx_clk_hw_gate2_shared("ssi2",         "ssi2_podf",  base + 0x7c, 20, &share_count_ssi2);
 406        hws[IMX6SL_CLK_SSI3]         = imx_clk_hw_gate2_shared("ssi3",         "ssi3_podf",  base + 0x7c, 22, &share_count_ssi3);
 407        hws[IMX6SL_CLK_UART]         = imx_clk_hw_gate2("uart",         "ipg",               base + 0x7c, 24);
 408        hws[IMX6SL_CLK_UART_SERIAL]  = imx_clk_hw_gate2("uart_serial",  "uart_root",         base + 0x7c, 26);
 409        hws[IMX6SL_CLK_USBOH3]       = imx_clk_hw_gate2("usboh3",       "ipg",               base + 0x80, 0);
 410        hws[IMX6SL_CLK_USDHC1]       = imx_clk_hw_gate2("usdhc1",       "usdhc1_podf",       base + 0x80, 2);
 411        hws[IMX6SL_CLK_USDHC2]       = imx_clk_hw_gate2("usdhc2",       "usdhc2_podf",       base + 0x80, 4);
 412        hws[IMX6SL_CLK_USDHC3]       = imx_clk_hw_gate2("usdhc3",       "usdhc3_podf",       base + 0x80, 6);
 413        hws[IMX6SL_CLK_USDHC4]       = imx_clk_hw_gate2("usdhc4",       "usdhc4_podf",       base + 0x80, 8);
 414
 415        /* Ensure the MMDC CH0 handshake is bypassed */
 416        imx_mmdc_mask_handshake(base, 0);
 417
 418        imx_check_clk_hws(hws, IMX6SL_CLK_END);
 419
 420        of_clk_add_hw_provider(np, of_clk_hw_onecell_get, clk_hw_data);
 421
 422        /* Ensure the AHB clk is at 132MHz. */
 423        ret = clk_set_rate(hws[IMX6SL_CLK_AHB]->clk, 132000000);
 424        if (ret)
 425                pr_warn("%s: failed to set AHB clock rate %d!\n",
 426                        __func__, ret);
 427
 428        if (IS_ENABLED(CONFIG_USB_MXS_PHY)) {
 429                clk_prepare_enable(hws[IMX6SL_CLK_USBPHY1_GATE]->clk);
 430                clk_prepare_enable(hws[IMX6SL_CLK_USBPHY2_GATE]->clk);
 431        }
 432
 433        /* Audio-related clocks configuration */
 434        clk_set_parent(hws[IMX6SL_CLK_SPDIF0_SEL]->clk, hws[IMX6SL_CLK_PLL3_PFD3]->clk);
 435
 436        /* set PLL5 video as lcdif pix parent clock */
 437        clk_set_parent(hws[IMX6SL_CLK_LCDIF_PIX_SEL]->clk,
 438                        hws[IMX6SL_CLK_PLL5_VIDEO_DIV]->clk);
 439
 440        clk_set_parent(hws[IMX6SL_CLK_LCDIF_AXI_SEL]->clk,
 441                       hws[IMX6SL_CLK_PLL2_PFD2]->clk);
 442
 443        imx_register_uart_clocks(2);
 444}
 445CLK_OF_DECLARE(imx6sl, "fsl,imx6sl-ccm", imx6sl_clocks_init);
 446