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 <cpu_func.h>
   8 #include <env.h>
   9 #include <errno.h>
  10 #include <init.h>
  11 #include <linux/libfdt.h>
  12 #include <fsl_esdhc_imx.h>
  13 #include <fdt_support.h>
  14 #include <asm/io.h>
  15 #include <asm/gpio.h>
  16 #include <asm/arch/clock.h>
  17 #include <asm/arch/sci/sci.h>
  18 #include <asm/arch/imx8-pins.h>
  19 #include <asm/arch/snvs_security_sc.h>
  20 #include <asm/arch/iomux.h>
  21 #include <asm/arch/sys_proto.h>
  22
  23 DECLARE_GLOBAL_DATA_PTR;
  24
  25 #define GPIO_PAD_CTRL   ((SC_PAD_CONFIG_NORMAL << PADRING_CONFIG_SHIFT) | \
  26                          (SC_PAD_ISO_OFF << PADRING_LPCONFIG_SHIFT) | \
  27                          (SC_PAD_28FDSOI_DSE_DV_HIGH << PADRING_DSE_SHIFT) | \
  28                          (SC_PAD_28FDSOI_PS_PU << PADRING_PULL_SHIFT))
  29
  30 #define UART_PAD_CTRL   ((SC_PAD_CONFIG_OUT_IN << PADRING_CONFIG_SHIFT) | \
  31                          (SC_PAD_ISO_OFF << PADRING_LPCONFIG_SHIFT) | \
  32                          (SC_PAD_28FDSOI_DSE_DV_HIGH << PADRING_DSE_SHIFT) | \
  33                          (SC_PAD_28FDSOI_PS_PU << PADRING_PULL_SHIFT))
  34
  35 static iomux_cfg_t uart0_pads[] = {
  36         SC_P_UART0_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
  37         SC_P_UART0_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
  38 };
  39
  40 static void setup_iomux_uart(void)
  41 {
  42         imx8_iomux_setup_multiple_pads(uart0_pads, ARRAY_SIZE(uart0_pads));
  43 }
  44
  45 int board_early_init_f(void)
  46 {
  47         sc_pm_clock_rate_t rate = SC_80MHZ;
  48         int ret;
  49
  50         /* Set UART0 clock root to 80 MHz */
  51         ret = sc_pm_setup_uart(SC_R_UART_0, rate);
  52         if (ret)
  53                 return ret;
  54
  55         setup_iomux_uart();
  56
  57         return 0;
  58 }
  59
  60 #if CONFIG_IS_ENABLED(DM_GPIO)
  61 static void board_gpio_init(void)
  62 {
  63         struct gpio_desc desc;
  64         int ret;
  65
  66         ret = dm_gpio_lookup_name("gpio@1a_3", &desc);
  67         if (ret)
  68                 return;
  69
  70         ret = dm_gpio_request(&desc, "bb_per_rst_b");
  71         if (ret)
  72                 return;
  73
  74         dm_gpio_set_dir_flags(&desc, GPIOD_IS_OUT);
  75         dm_gpio_set_value(&desc, 0);
  76         udelay(50);
  77         dm_gpio_set_value(&desc, 1);
  78 }
  79 #else
  80 static inline void board_gpio_init(void) {}
  81 #endif
  82
  83 #if IS_ENABLED(CONFIG_FEC_MXC)
  84 #include <miiphy.h>
  85
  86 int board_phy_config(struct phy_device *phydev)
  87 {
  88         phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x1f);
  89         phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, 0x8);
  90
  91         phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x05);
  92         phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, 0x100);
  93
  94         if (phydev->drv->config)
  95                 phydev->drv->config(phydev);
  96
  97         return 0;
  98 }
  99 #endif
 100
 101 int checkboard(void)
 102 {
 103         puts("Board: iMX8QXP MEK\n");
 104
 105         build_info();
 106         print_bootinfo();
 107
 108         return 0;
 109 }
 110
 111 int board_init(void)
 112 {
 113         board_gpio_init();
 114
 115 #ifdef CONFIG_IMX_SNVS_SEC_SC_AUTO
 116         {
 117                 int ret = snvs_security_sc_init();
 118
 119                 if (ret)
 120                         return ret;
 121         }
 122 #endif
 123
 124         return 0;
 125 }
 126
 127 /*
 128  * Board specific reset that is system reset.
 129  */
 130 void reset_cpu(ulong addr)
 131 {
 132         /* TODO */
 133 }
 134
 135 #ifdef CONFIG_OF_BOARD_SETUP
 136 int ft_board_setup(void *blob, bd_t *bd)
 137 {
 138         return 0;
 139 }
 140 #endif
 141
 142 int board_mmc_get_env_dev(int devno)
 143 {
 144         return devno;
 145 }
 146
 147 int board_late_init(void)
 148 {
 149         char *fdt_file;
 150         bool m4_booted;
 151
 152 #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
 153         env_set("board_name", "MEK");
 154         env_set("board_rev", "iMX8QXP");
 155 #endif
 156
 157         fdt_file = env_get("fdt_file");
 158         m4_booted = m4_parts_booted();
 159
 160         if (fdt_file && !strcmp(fdt_file, "undefined")) {
 161                 if (m4_booted)
 162                         env_set("fdt_file", "imx8qxp-mek-rpmsg.dtb");
 163                 else
 164                         env_set("fdt_file", "imx8qxp-mek.dtb");
 165         }
 166
 167         return 0;
 168 }