LXR uboot/board/toradex/colibri-imx6ull/colibri-imx6ull.c

   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 * Copyright (C) 2018-2019 Toradex AG
   4 */
   5#include <common.h>
   6#include <init.h>
   7#include <asm/global_data.h>
   8#include <linux/delay.h>
   9
  10#include <asm/arch/clock.h>
  11#include <asm/arch/crm_regs.h>
  12#include <asm/arch/imx-regs.h>
  13#include <asm/arch-mx6/clock.h>
  14#include <asm/arch-mx6/imx-regs.h>
  15#include <asm/arch-mx6/mx6ull_pins.h>
  16#include <asm/arch/sys_proto.h>
  17#include <asm/gpio.h>
  18#include <asm/mach-imx/boot_mode.h>
  19#include <asm/mach-imx/iomux-v3.h>
  20#include <asm/io.h>
  21#include <dm.h>
  22#include <dm/platform_data/serial_mxc.h>
  23#include <env.h>
  24#include <fdt_support.h>
  25#include <imx_thermal.h>
  26#include <jffs2/load_kernel.h>
  27#include <linux/sizes.h>
  28#include <miiphy.h>
  29#include <mtd_node.h>
  30#include <netdev.h>
  31
  32#include "../common/tdx-common.h"
  33#include "../common/tdx-cfg-block.h"
  34
  35DECLARE_GLOBAL_DATA_PTR;
  36
  37#define LCD_PAD_CTRL    (PAD_CTL_HYS | PAD_CTL_PUS_100K_UP | \
  38                PAD_CTL_DSE_48ohm)
  39
  40#define MX6_PAD_SNVS_PMIC_STBY_REQ_ADDR 0x2290040
  41
  42#define NAND_PAD_CTRL (PAD_CTL_DSE_48ohm | PAD_CTL_SRE_SLOW | PAD_CTL_HYS)
  43
  44#define NAND_PAD_READY0_CTRL (PAD_CTL_DSE_48ohm | PAD_CTL_PUS_22K_UP)
  45
  46#define FLASH_DETECTION_CTRL (PAD_CTL_HYS | PAD_CTL_PUE)
  47#define FLASH_DET_GPIO  IMX_GPIO_NR(4, 1)
  48static const iomux_v3_cfg_t flash_detection_pads[] = {
  49        MX6_PAD_NAND_WE_B__GPIO4_IO01 | MUX_PAD_CTRL(FLASH_DETECTION_CTRL),
  50};
  51
  52static bool is_emmc;
  53
  54int dram_init(void)
  55{
  56        gd->ram_size = get_ram_size((void *)PHYS_SDRAM, PHYS_SDRAM_SIZE);
  57
  58        return 0;
  59}
  60
  61#ifdef CONFIG_NAND_MXS
  62static void setup_gpmi_nand(void)
  63{
  64        setup_gpmi_io_clk((MXC_CCM_CS2CDR_ENFC_CLK_PODF(0) |
  65                           MXC_CCM_CS2CDR_ENFC_CLK_PRED(3) |
  66                           MXC_CCM_CS2CDR_ENFC_CLK_SEL(3)));
  67}
  68#endif /* CONFIG_NAND_MXS */
  69
  70#ifdef CONFIG_DM_VIDEO
  71static const iomux_v3_cfg_t backlight_pads[] = {
  72        /* Backlight On */
  73        MX6_PAD_JTAG_TMS__GPIO1_IO11            | MUX_PAD_CTRL(NO_PAD_CTRL),
  74        /* Backlight PWM<A> (multiplexed pin) */
  75        MX6_PAD_NAND_WP_B__GPIO4_IO11           | MUX_PAD_CTRL(NO_PAD_CTRL),
  76};
  77
  78#define GPIO_BL_ON IMX_GPIO_NR(1, 11)
  79#define GPIO_PWM_A IMX_GPIO_NR(4, 11)
  80
  81static int setup_lcd(void)
  82{
  83        imx_iomux_v3_setup_multiple_pads(backlight_pads, ARRAY_SIZE(backlight_pads));
  84
  85        /* Set BL_ON */
  86        gpio_request(GPIO_BL_ON, "BL_ON");
  87        gpio_direction_output(GPIO_BL_ON, 1);
  88
  89        /* Set PWM<A> to full brightness (assuming inversed polarity) */
  90        gpio_request(GPIO_PWM_A, "PWM<A>");
  91        gpio_direction_output(GPIO_PWM_A, 0);
  92
  93        return 0;
  94}
  95#endif
  96
  97#ifdef CONFIG_FEC_MXC
  98static int setup_fec(void)
  99{
 100        struct iomuxc *iomuxc_regs = (struct iomuxc *)IOMUXC_BASE_ADDR;
 101        int ret;
 102
 103        /* provide the PHY clock from the i.MX 6 */
 104        ret = enable_fec_anatop_clock(1, ENET_50MHZ);
 105        if (ret)
 106                return ret;
 107
 108        /* Use 50M anatop REF_CLK and output it on ENET2_TX_CLK */
 109        clrsetbits_le32(&iomuxc_regs->gpr[1],
 110                        IOMUX_GPR1_FEC2_CLOCK_MUX2_SEL_MASK,
 111                        IOMUX_GPR1_FEC2_CLOCK_MUX1_SEL_MASK);
 112
 113        /* give new Ethernet PHY power save mode circuitry time to settle */
 114        mdelay(300);
 115
 116        return 0;
 117}
 118
 119int board_phy_config(struct phy_device *phydev)
 120{
 121        if (phydev->drv->config)
 122                phydev->drv->config(phydev);
 123        return 0;
 124}
 125#endif /* CONFIG_FEC_MXC */
 126
 127int board_init(void)
 128{
 129        /* address of boot parameters */
 130        gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
 131
 132        /*
 133         * Enable GPIO on NAND_WE_B/eMMC_RST with 100k pull-down. eMMC_RST
 134         * is pulled high with 4.7k for eMMC devices. This allows to reliably
 135         * detect eMMC/NAND flash
 136         */
 137        imx_iomux_v3_setup_multiple_pads(flash_detection_pads, ARRAY_SIZE(flash_detection_pads));
 138        gpio_request(FLASH_DET_GPIO, "flash-detection-gpio");
 139        is_emmc = gpio_get_value(FLASH_DET_GPIO);
 140        gpio_free(FLASH_DET_GPIO);
 141
 142#ifdef CONFIG_FEC_MXC
 143        setup_fec();
 144#endif
 145
 146#ifdef CONFIG_NAND_MXS
 147        setup_gpmi_nand();
 148#endif
 149        return 0;
 150}
 151
 152#ifdef CONFIG_CMD_BMODE
 153/* TODO */
 154static const struct boot_mode board_boot_modes[] = {
 155        /* 4 bit bus width */
 156        {"nand", MAKE_CFGVAL(0x40, 0x34, 0x00, 0x00)},
 157        {"sd1", MAKE_CFGVAL(0x10, 0x10, 0x00, 0x00)},
 158        {NULL, 0},
 159};
 160#endif
 161
 162int board_late_init(void)
 163{
 164#ifdef CONFIG_TDX_CFG_BLOCK
 165        /*
 166         * If we have a valid config block and it says we are a module with
 167         * Wi-Fi/Bluetooth make sure we use the -wifi device tree.
 168         */
 169        if (tdx_hw_tag.prodid == COLIBRI_IMX6ULL_WIFI_BT_IT ||
 170            tdx_hw_tag.prodid == COLIBRI_IMX6ULL_WIFI_BT) {
 171                env_set("variant", "-wifi");
 172        } else {
 173                if (is_emmc)
 174                        env_set("variant", "-emmc");
 175        }
 176#else
 177        if (is_emmc)
 178                env_set("variant", "-emmc");
 179#endif
 180
 181        /*
 182         * Disable output driver of PAD CCM_PMIC_STBY_REQ. This prevents the
 183         * SOC to request for a lower voltage during sleep. This is necessary
 184         * because the voltage is changing too slow for the SOC to wake up
 185         * properly.
 186         */
 187        __raw_writel(0x8080, MX6_PAD_SNVS_PMIC_STBY_REQ_ADDR);
 188
 189#ifdef CONFIG_CMD_BMODE
 190        add_board_boot_modes(board_boot_modes);
 191#endif
 192
 193#ifdef CONFIG_CMD_USB_SDP
 194        if (is_boot_from_usb()) {
 195                printf("Serial Downloader recovery mode, using sdp command\n");
 196                env_set("bootdelay", "0");
 197                env_set("bootcmd", "sdp 0");
 198        }
 199#endif /* CONFIG_CMD_USB_SDP */
 200
 201#if defined(CONFIG_DM_VIDEO)
 202        setup_lcd();
 203#endif
 204
 205        return 0;
 206}
 207
 208int checkboard(void)
 209{
 210        printf("Model: Toradex Colibri iMX6ULL\n");
 211
 212        return 0;
 213}
 214
 215#if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
 216int ft_board_setup(void *blob, struct bd_info *bd)
 217{
 218#if defined(CONFIG_FDT_FIXUP_PARTITIONS)
 219        static struct node_info nodes[] = {
 220                { "fsl,imx6ull-gpmi-nand", MTD_DEV_TYPE_NAND, },
 221                { "fsl,imx6q-gpmi-nand", MTD_DEV_TYPE_NAND, },
 222        };
 223
 224        /* Update partition nodes using info from mtdparts env var */
 225        puts("   Updating MTD partitions...\n");
 226        fdt_fixup_mtdparts(blob, nodes, ARRAY_SIZE(nodes));
 227#endif
 228
 229        return ft_common_board_setup(blob, bd);
 230}
 231#endif
 232
 233static struct mxc_serial_plat mxc_serial_plat = {
 234        .reg = (struct mxc_uart *)UART1_BASE,
 235        .use_dte = 1,
 236};
 237
 238U_BOOT_DRVINFO(mxc_serial) = {
 239        .name = "serial_mxc",
 240        .plat = &mxc_serial_plat,
 241};
 242