board/freescale/imx8qxp_mek/imx8qxp_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 <fsl_esdhc_imx.h>
  11 #include <asm/io.h>
  12 #include <asm/gpio.h>
  13 #include <asm/arch/clock.h>
  14 #include <asm/arch/sci/sci.h>
  15 #include <asm/arch/imx8-pins.h>
  16 #include <asm/arch/iomux.h>
  17 #include <asm/arch/sys_proto.h>
  18
  19 DECLARE_GLOBAL_DATA_PTR;
  20
  21 #define GPIO_PAD_CTRL   ((SC_PAD_CONFIG_NORMAL << PADRING_CONFIG_SHIFT) | \
  22                          (SC_PAD_ISO_OFF << PADRING_LPCONFIG_SHIFT) | \
  23                          (SC_PAD_28FDSOI_DSE_DV_HIGH << PADRING_DSE_SHIFT) | \
  24                          (SC_PAD_28FDSOI_PS_PU << PADRING_PULL_SHIFT))
  25
  26 #define UART_PAD_CTRL   ((SC_PAD_CONFIG_OUT_IN << PADRING_CONFIG_SHIFT) | \
  27                          (SC_PAD_ISO_OFF << PADRING_LPCONFIG_SHIFT) | \
  28                          (SC_PAD_28FDSOI_DSE_DV_HIGH << PADRING_DSE_SHIFT) | \
  29                          (SC_PAD_28FDSOI_PS_PU << PADRING_PULL_SHIFT))
  30
  31 static iomux_cfg_t uart0_pads[] = {
  32         SC_P_UART0_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
  33         SC_P_UART0_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
  34 };
  35
  36 static void setup_iomux_uart(void)
  37 {
  38         imx8_iomux_setup_multiple_pads(uart0_pads, ARRAY_SIZE(uart0_pads));
  39 }
  40
  41 int board_early_init_f(void)
  42 {
  43         sc_pm_clock_rate_t rate = SC_80MHZ;
  44         int ret;
  45
  46         /* Set UART0 clock root to 80 MHz */
  47         ret = sc_pm_setup_uart(SC_R_UART_0, rate);
  48         if (ret)
  49                 return ret;
  50
  51         setup_iomux_uart();
  52
  53         return 0;
  54 }
  55
  56 #if IS_ENABLED(CONFIG_DM_GPIO)
  57 static void board_gpio_init(void)
  58 {
  59         struct gpio_desc desc;
  60         int ret;
  61
  62         ret = dm_gpio_lookup_name("gpio@1a_3", &desc);
  63         if (ret)
  64                 return;
  65
  66         ret = dm_gpio_request(&desc, "bb_per_rst_b");
  67         if (ret)
  68                 return;
  69
  70         dm_gpio_set_dir_flags(&desc, GPIOD_IS_OUT);
  71         dm_gpio_set_value(&desc, 0);
  72         udelay(50);
  73         dm_gpio_set_value(&desc, 1);
  74 }
  75 #else
  76 static inline void board_gpio_init(void) {}
  77 #endif
  78
  79 #if IS_ENABLED(CONFIG_FEC_MXC)
  80 #include <miiphy.h>
  81
  82 int board_phy_config(struct phy_device *phydev)
  83 {
  84         phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x1f);
  85         phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, 0x8);
  86
  87         phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x05);
  88         phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, 0x100);
  89
  90         if (phydev->drv->config)
  91                 phydev->drv->config(phydev);
  92
  93         return 0;
  94 }
  95 #endif
  96
  97 void build_info(void)
  98 {
  99         u32 sc_build = 0, sc_commit = 0;
 100
 101         /* Get SCFW build and commit id */
 102         sc_misc_build_info(-1, &sc_build, &sc_commit);
 103         if (!sc_build) {
 104                 printf("SCFW does not support build info\n");
 105                 sc_commit = 0; /* Display 0 when the build info is not supported */
 106         }
 107         printf("Build: SCFW %x\n", sc_commit);
 108 }
 109
 110 int checkboard(void)
 111 {
 112         puts("Board: iMX8QXP MEK\n");
 113
 114         build_info();
 115         print_bootinfo();
 116
 117         return 0;
 118 }
 119
 120 int board_init(void)
 121 {
 122         board_gpio_init();
 123
 124         return 0;
 125 }
 126
 127 void detail_board_ddr_info(void)
 128 {
 129         puts("\nDDR    ");
 130 }
 131
 132 /*
 133  * Board specific reset that is system reset.
 134  */
 135 void reset_cpu(ulong addr)
 136 {
 137         /* TODO */
 138 }
 139
 140 #ifdef CONFIG_OF_BOARD_SETUP
 141 int ft_board_setup(void *blob, bd_t *bd)
 142 {
 143         return 0;
 144 }
 145 #endif
 146
 147 int board_mmc_get_env_dev(int devno)
 148 {
 149         return devno;
 150 }
 151
 152 int board_late_init(void)
 153 {
 154 #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
 155         env_set("board_name", "MEK");
 156         env_set("board_rev", "iMX8QXP");
 157 #endif
 158
 159         return 0;
 160 }