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 <cpu_func.h>
   8 #include <env.h>
   9 #include <errno.h>
  10 #include <init.h>
  11 #include <linux/libfdt.h>
  12 #include <fdt_support.h>
  13 #include <asm/io.h>
  14 #include <asm/gpio.h>
  15 #include <asm/arch/clock.h>
  16 #include <asm/arch/sci/sci.h>
  17 #include <asm/arch/imx8-pins.h>
  18 #include <asm/arch/iomux.h>
  19 #include <asm/arch/sys_proto.h>
  20
  21 DECLARE_GLOBAL_DATA_PTR;
  22
  23 #define UART_PAD_CTRL   ((SC_PAD_CONFIG_OUT_IN << PADRING_CONFIG_SHIFT) | \
  24                          (SC_PAD_ISO_OFF << PADRING_LPCONFIG_SHIFT) | \
  25                          (SC_PAD_28FDSOI_DSE_DV_HIGH << PADRING_DSE_SHIFT) | \
  26                          (SC_PAD_28FDSOI_PS_PU << PADRING_PULL_SHIFT))
  27
  28 static iomux_cfg_t uart0_pads[] = {
  29         SC_P_UART0_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
  30         SC_P_UART0_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
  31 };
  32
  33 static void setup_iomux_uart(void)
  34 {
  35         imx8_iomux_setup_multiple_pads(uart0_pads, ARRAY_SIZE(uart0_pads));
  36 }
  37
  38 int board_early_init_f(void)
  39 {
  40         sc_pm_clock_rate_t rate = SC_80MHZ;
  41         int ret;
  42
  43         /* Set UART0 clock root to 80 MHz */
  44         ret = sc_pm_setup_uart(SC_R_UART_0, rate);
  45         if (ret)
  46                 return ret;
  47
  48         setup_iomux_uart();
  49
  50         sc_pm_set_resource_power_mode(-1, SC_R_GPIO_5, SC_PM_PW_MODE_ON);
  51
  52         return 0;
  53 }
  54
  55 #if CONFIG_IS_ENABLED(DM_GPIO)
  56 static void board_gpio_init(void)
  57 {
  58         /* TODO */
  59 }
  60 #else
  61 static inline void board_gpio_init(void) {}
  62 #endif
  63
  64 #if IS_ENABLED(CONFIG_FEC_MXC)
  65 #include <miiphy.h>
  66
  67 int board_phy_config(struct phy_device *phydev)
  68 {
  69         phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x1f);
  70         phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, 0x8);
  71
  72         phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x00);
  73         phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, 0x82ee);
  74         phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x05);
  75         phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, 0x100);
  76
  77         if (phydev->drv->config)
  78                 phydev->drv->config(phydev);
  79
  80         return 0;
  81 }
  82 #endif
  83
  84 int checkboard(void)
  85 {
  86         puts("Board: iMX8QM MEK\n");
  87
  88         build_info();
  89         print_bootinfo();
  90
  91         return 0;
  92 }
  93
  94 int board_init(void)
  95 {
  96         /* Power up base board */
  97         sc_pm_set_resource_power_mode(-1, SC_R_BOARD_R1, SC_PM_PW_MODE_ON);
  98
  99         board_gpio_init();
 100
 101         return 0;
 102 }
 103
 104 /*
 105  * Board specific reset that is system reset.
 106  */
 107 void reset_cpu(ulong addr)
 108 {
 109         /* TODO */
 110 }
 111
 112 #ifdef CONFIG_OF_BOARD_SETUP
 113 int ft_board_setup(void *blob, bd_t *bd)
 114 {
 115         return 0;
 116 }
 117 #endif
 118
 119 int board_mmc_get_env_dev(int devno)
 120 {
 121         return devno;
 122 }
 123
 124 int board_late_init(void)
 125 {
 126         char *fdt_file;
 127         bool m4_booted;
 128
 129 #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
 130         env_set("board_name", "MEK");
 131         env_set("board_rev", "iMX8QM");
 132 #endif
 133
 134         fdt_file = env_get("fdt_file");
 135         m4_booted = m4_parts_booted();
 136
 137         if (fdt_file && !strcmp(fdt_file, "undefined")) {
 138                 if (m4_booted)
 139                         env_set("fdt_file", "imx8qm-mek-rpmsg.dtb");
 140                 else
 141                         env_set("fdt_file", "imx8qm-mek.dtb");
 142         }
 143
 144         return 0;
 145 }