board/engicam/icorem6_rqs/icorem6_rqs.c

   1 /*
   2  * Copyright (C) 2016 Amarula Solutions B.V.
   3  * Copyright (C) 2016 Engicam S.r.l.
   4  * Author: Jagan Teki <jagan@amarulasolutions.com>
   5  *
   6  * SPDX-License-Identifier:     GPL-2.0+
   7  */
   8
   9 #include <common.h>
  10 #include <mmc.h>
  11
  12 #include <asm/io.h>
  13 #include <asm/gpio.h>
  14 #include <linux/sizes.h>
  15
  16 #include <asm/arch/clock.h>
  17 #include <asm/arch/crm_regs.h>
  18 #include <asm/arch/iomux.h>
  19 #include <asm/arch/mx6-pins.h>
  20 #include <asm/arch/sys_proto.h>
  21 #include <asm/imx-common/iomux-v3.h>
  22
  23 #include "../common/board.h"
  24
  25 DECLARE_GLOBAL_DATA_PTR;
  26
  27 #ifdef CONFIG_ENV_IS_IN_MMC
  28 int board_mmc_get_env_dev(int devno)
  29 {
  30         /* dev 0 for SD/eSD, dev 1 for MMC/eMMC */
  31         return (devno == 3) ? 1 : 0;
  32 }
  33 #endif
  34
  35 int board_late_init(void)
  36 {
  37         switch ((imx6_src_get_boot_mode() & IMX6_BMODE_MASK) >>
  38                         IMX6_BMODE_SHIFT) {
  39         case IMX6_BMODE_SD:
  40         case IMX6_BMODE_ESD:
  41         case IMX6_BMODE_MMC:
  42         case IMX6_BMODE_EMMC:
  43 #ifdef CONFIG_ENV_IS_IN_MMC
  44                 mmc_late_init();
  45 #endif
  46                 setenv("modeboot", "mmcboot");
  47                 break;
  48         default:
  49                 setenv("modeboot", "");
  50                 break;
  51         }
  52
  53         if (is_mx6dq())
  54                 setenv("fdt_file", "imx6q-icore-rqs.dtb");
  55         else if(is_mx6dl() || is_mx6solo())
  56                 setenv("fdt_file", "imx6dl-icore-rqs.dtb");
  57
  58         return 0;
  59 }
  60
  61 #ifdef CONFIG_SPL_BUILD
  62 #include <spl.h>
  63
  64 /* MMC board initialization is needed till adding DM support in SPL */
  65 #if defined(CONFIG_FSL_ESDHC) && !defined(CONFIG_DM_MMC)
  66 #include <mmc.h>
  67 #include <fsl_esdhc.h>
  68
  69 #define USDHC_PAD_CTRL (PAD_CTL_PKE | PAD_CTL_PUE |             \
  70         PAD_CTL_PUS_47K_UP  | PAD_CTL_SPEED_HIGH |               \
  71         PAD_CTL_DSE_40ohm   | PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
  72
  73 static iomux_v3_cfg_t const usdhc3_pads[] = {
  74         IOMUX_PADS(PAD_SD3_CLK__SD3_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
  75         IOMUX_PADS(PAD_SD3_CMD__SD3_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
  76         IOMUX_PADS(PAD_SD3_DAT0__SD3_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
  77         IOMUX_PADS(PAD_SD3_DAT1__SD3_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
  78         IOMUX_PADS(PAD_SD3_DAT2__SD3_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
  79         IOMUX_PADS(PAD_SD3_DAT3__SD3_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
  80 };
  81
  82 static iomux_v3_cfg_t const usdhc4_pads[] = {
  83         IOMUX_PADS(PAD_SD4_CLK__SD4_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
  84         IOMUX_PADS(PAD_SD4_CMD__SD4_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
  85         IOMUX_PADS(PAD_SD4_DAT0__SD4_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
  86         IOMUX_PADS(PAD_SD4_DAT1__SD4_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
  87         IOMUX_PADS(PAD_SD4_DAT2__SD4_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
  88         IOMUX_PADS(PAD_SD4_DAT3__SD4_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
  89         IOMUX_PADS(PAD_SD4_DAT4__SD4_DATA4 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
  90         IOMUX_PADS(PAD_SD4_DAT5__SD4_DATA5 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
  91         IOMUX_PADS(PAD_SD4_DAT6__SD4_DATA6 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
  92         IOMUX_PADS(PAD_SD4_DAT7__SD4_DATA7 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
  93 };
  94
  95 struct fsl_esdhc_cfg usdhc_cfg[2] = {
  96         {USDHC3_BASE_ADDR, 1, 4},
  97         {USDHC4_BASE_ADDR, 1, 8},
  98 };
  99
 100 int board_mmc_getcd(struct mmc *mmc)
 101 {
 102         struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
 103         int ret = 0;
 104
 105         switch (cfg->esdhc_base) {
 106         case USDHC3_BASE_ADDR:
 107         case USDHC4_BASE_ADDR:
 108                 ret = 1;
 109                 break;
 110         }
 111
 112         return ret;
 113 }
 114
 115 int board_mmc_init(bd_t *bis)
 116 {
 117         int i, ret;
 118
 119         /*
 120         * According to the board_mmc_init() the following map is done:
 121         * (U-boot device node)    (Physical Port)
 122         * mmc0                  USDHC3
 123         * mmc1                  USDHC4
 124         */
 125         for (i = 0; i < CONFIG_SYS_FSL_USDHC_NUM; i++) {
 126                 switch (i) {
 127                 case 0:
 128                         SETUP_IOMUX_PADS(usdhc3_pads);
 129                         usdhc_cfg[i].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK);
 130                         break;
 131                 case 1:
 132                         SETUP_IOMUX_PADS(usdhc4_pads);
 133                         usdhc_cfg[i].sdhc_clk = mxc_get_clock(MXC_ESDHC4_CLK);
 134                         break;
 135                 default:
 136                         printf("Warning - USDHC%d controller not supporting\n",
 137                                i + 1);
 138                         return 0;
 139                 }
 140
 141                 ret = fsl_esdhc_initialize(bis, &usdhc_cfg[i]);
 142                 if (ret) {
 143                         printf("Warning: failed to initialize mmc dev %d\n", i);
 144                         return ret;
 145                 }
 146         }
 147
 148         return 0;
 149 }
 150
 151 #ifdef CONFIG_ENV_IS_IN_MMC
 152 void board_boot_order(u32 *spl_boot_list)
 153 {
 154         u32 bmode = imx6_src_get_boot_mode();
 155         u8 boot_dev = BOOT_DEVICE_MMC1;
 156
 157         switch ((bmode & IMX6_BMODE_MASK) >> IMX6_BMODE_SHIFT) {
 158         case IMX6_BMODE_SD:
 159         case IMX6_BMODE_ESD:
 160                 /* SD/eSD - BOOT_DEVICE_MMC1 */
 161                 break;
 162         case IMX6_BMODE_MMC:
 163         case IMX6_BMODE_EMMC:
 164                 /* MMC/eMMC */
 165                 boot_dev = BOOT_DEVICE_MMC2;
 166                 break;
 167         default:
 168                 /* Default - BOOT_DEVICE_MMC1 */
 169                 printf("Wrong board boot order\n");
 170                 break;
 171         }
 172
 173         spl_boot_list[0] = boot_dev;
 174 }
 175 #endif
 176 #endif
 177
 178 #ifdef CONFIG_SPL_LOAD_FIT
 179 int board_fit_config_name_match(const char *name)
 180 {
 181         if (is_mx6dq() && !strcmp(name, "imx6q-icore-rqs"))
 182                 return 0;
 183         else if ((is_mx6dl() || is_mx6solo()) && !strcmp(name, "imx6dl-icore-rqs"))
 184                 return 0;
 185         else
 186                 return -1;
 187 }
 188 #endif
 189 #endif /* CONFIG_SPL_BUILD */