board/freescale/imx8qm_mek/imx8qm_mek.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright 2018 NXP
   4  */
   5
   6 #include <common.h>
   7 #include <errno.h>
   8 #include <linux/libfdt.h>
   9 #include <environment.h>
  10 #include <asm/io.h>
  11 #include <asm/gpio.h>
  12 #include <asm/arch/clock.h>
  13 #include <asm/arch/sci/sci.h>
  14 #include <asm/arch/imx8-pins.h>
  15 #include <asm/arch/iomux.h>
  16 #include <asm/arch/sys_proto.h>
  17
  18 DECLARE_GLOBAL_DATA_PTR;
  19
  20 #define UART_PAD_CTRL   ((SC_PAD_CONFIG_OUT_IN << PADRING_CONFIG_SHIFT) | \
  21                          (SC_PAD_ISO_OFF << PADRING_LPCONFIG_SHIFT) | \
  22                          (SC_PAD_28FDSOI_DSE_DV_HIGH << PADRING_DSE_SHIFT) | \
  23                          (SC_PAD_28FDSOI_PS_PU << PADRING_PULL_SHIFT))
  24
  25 static iomux_cfg_t uart0_pads[] = {
  26         SC_P_UART0_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
  27         SC_P_UART0_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
  28 };
  29
  30 static void setup_iomux_uart(void)
  31 {
  32         imx8_iomux_setup_multiple_pads(uart0_pads, ARRAY_SIZE(uart0_pads));
  33 }
  34
  35 int board_early_init_f(void)
  36 {
  37         int ret;
  38         /* Set UART0 clock root to 80 MHz */
  39         sc_pm_clock_rate_t rate = 80000000;
  40
  41         /* Power up UART0 */
  42         ret = sc_pm_set_resource_power_mode(-1, SC_R_UART_0, SC_PM_PW_MODE_ON);
  43         if (ret)
  44                 return ret;
  45
  46         ret = sc_pm_set_clock_rate(-1, SC_R_UART_0, 2, &rate);
  47         if (ret)
  48                 return ret;
  49
  50         /* Enable UART0 clock root */
  51         ret = sc_pm_clock_enable(-1, SC_R_UART_0, 2, true, false);
  52         if (ret)
  53                 return ret;
  54
  55         setup_iomux_uart();
  56
  57         sc_pm_set_resource_power_mode(-1, SC_R_GPIO_5, SC_PM_PW_MODE_ON);
  58
  59         return 0;
  60 }
  61
  62 #if IS_ENABLED(CONFIG_DM_GPIO)
  63 static void board_gpio_init(void)
  64 {
  65         /* TODO */
  66 }
  67 #else
  68 static inline void board_gpio_init(void) {}
  69 #endif
  70
  71 #if IS_ENABLED(CONFIG_FEC_MXC)
  72 #include <miiphy.h>
  73
  74 int board_phy_config(struct phy_device *phydev)
  75 {
  76         phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x1f);
  77         phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, 0x8);
  78
  79         phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x00);
  80         phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, 0x82ee);
  81         phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x05);
  82         phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, 0x100);
  83
  84         if (phydev->drv->config)
  85                 phydev->drv->config(phydev);
  86
  87         return 0;
  88 }
  89 #endif
  90
  91 void build_info(void)
  92 {
  93         u32 sc_build = 0, sc_commit = 0;
  94
  95         /* Get SCFW build and commit id */
  96         sc_misc_build_info(-1, &sc_build, &sc_commit);
  97         if (!sc_build) {
  98                 printf("SCFW does not support build info\n");
  99                 sc_commit = 0; /* Display 0 when the build info is not supported*/
 100         }
 101         printf("Build: SCFW %x\n", sc_commit);
 102 }
 103
 104 int checkboard(void)
 105 {
 106         puts("Board: iMX8QM MEK\n");
 107
 108         build_info();
 109         print_bootinfo();
 110
 111         return 0;
 112 }
 113
 114 int board_init(void)
 115 {
 116         /* Power up base board */
 117         sc_pm_set_resource_power_mode(-1, SC_R_BOARD_R1, SC_PM_PW_MODE_ON);
 118
 119         board_gpio_init();
 120
 121         return 0;
 122 }
 123
 124 void detail_board_ddr_info(void)
 125 {
 126         puts("\nDDR    ");
 127 }
 128
 129 /*
 130  * Board specific reset that is system reset.
 131  */
 132 void reset_cpu(ulong addr)
 133 {
 134         /* TODO */
 135 }
 136
 137 #ifdef CONFIG_OF_BOARD_SETUP
 138 int ft_board_setup(void *blob, bd_t *bd)
 139 {
 140         return 0;
 141 }
 142 #endif
 143
 144 int board_mmc_get_env_dev(int devno)
 145 {
 146         return devno;
 147 }
 148
 149 int board_late_init(void)
 150 {
 151 #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
 152         env_set("board_name", "MEK");
 153         env_set("board_rev", "iMX8QM");
 154 #endif
 155
 156         return 0;
 157 }