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 <asm/global_data.h>
  12 #include <linux/delay.h>
  13 #include <linux/libfdt.h>
  14 #include <fsl_esdhc_imx.h>
  15 #include <fdt_support.h>
  16 #include <asm/io.h>
  17 #include <asm/gpio.h>
  18 #include <asm/arch/clock.h>
  19 #include <asm/arch/sci/sci.h>
  20 #include <asm/arch/imx8-pins.h>
  21 #include <asm/arch/snvs_security_sc.h>
  22 #include <asm/arch/iomux.h>
  23 #include <asm/arch/sys_proto.h>
  24
  25 DECLARE_GLOBAL_DATA_PTR;
  26
  27 #define GPIO_PAD_CTRL   ((SC_PAD_CONFIG_NORMAL << PADRING_CONFIG_SHIFT) | \
  28                          (SC_PAD_ISO_OFF << PADRING_LPCONFIG_SHIFT) | \
  29                          (SC_PAD_28FDSOI_DSE_DV_HIGH << PADRING_DSE_SHIFT) | \
  30                          (SC_PAD_28FDSOI_PS_PU << PADRING_PULL_SHIFT))
  31
  32 #define UART_PAD_CTRL   ((SC_PAD_CONFIG_OUT_IN << PADRING_CONFIG_SHIFT) | \
  33                          (SC_PAD_ISO_OFF << PADRING_LPCONFIG_SHIFT) | \
  34                          (SC_PAD_28FDSOI_DSE_DV_HIGH << PADRING_DSE_SHIFT) | \
  35                          (SC_PAD_28FDSOI_PS_PU << PADRING_PULL_SHIFT))
  36
  37 static iomux_cfg_t uart0_pads[] = {
  38         SC_P_UART0_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
  39         SC_P_UART0_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
  40 };
  41
  42 static void setup_iomux_uart(void)
  43 {
  44         imx8_iomux_setup_multiple_pads(uart0_pads, ARRAY_SIZE(uart0_pads));
  45 }
  46
  47 int board_early_init_f(void)
  48 {
  49         sc_pm_clock_rate_t rate = SC_80MHZ;
  50         int ret;
  51
  52         /* Set UART0 clock root to 80 MHz */
  53         ret = sc_pm_setup_uart(SC_R_UART_0, rate);
  54         if (ret)
  55                 return ret;
  56
  57         setup_iomux_uart();
  58
  59         return 0;
  60 }
  61
  62 #if CONFIG_IS_ENABLED(DM_GPIO)
  63 static void board_gpio_init(void)
  64 {
  65         struct gpio_desc desc;
  66         int ret;
  67
  68         ret = dm_gpio_lookup_name("gpio@1a_3", &desc);
  69         if (ret)
  70                 return;
  71
  72         ret = dm_gpio_request(&desc, "bb_per_rst_b");
  73         if (ret)
  74                 return;
  75
  76         dm_gpio_set_dir_flags(&desc, GPIOD_IS_OUT);
  77         dm_gpio_set_value(&desc, 0);
  78         udelay(50);
  79         dm_gpio_set_value(&desc, 1);
  80 }
  81 #else
  82 static inline void board_gpio_init(void) {}
  83 #endif
  84
  85 #if IS_ENABLED(CONFIG_FEC_MXC)
  86 #include <miiphy.h>
  87
  88 int board_phy_config(struct phy_device *phydev)
  89 {
  90         phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x1f);
  91         phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, 0x8);
  92
  93         phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x05);
  94         phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, 0x100);
  95
  96         if (phydev->drv->config)
  97                 phydev->drv->config(phydev);
  98
  99         return 0;
 100 }
 101 #endif
 102
 103 int checkboard(void)
 104 {
 105         puts("Board: iMX8QXP MEK\n");
 106
 107         build_info();
 108         print_bootinfo();
 109
 110         return 0;
 111 }
 112
 113 int board_init(void)
 114 {
 115         board_gpio_init();
 116
 117 #ifdef CONFIG_IMX_SNVS_SEC_SC_AUTO
 118         {
 119                 int ret = snvs_security_sc_init();
 120
 121                 if (ret)
 122                         return ret;
 123         }
 124 #endif
 125
 126         return 0;
 127 }
 128
 129 /*
 130  * Board specific reset that is system reset.
 131  */
 132 void reset_cpu(void)
 133 {
 134         /* TODO */
 135 }
 136
 137 #ifdef CONFIG_OF_BOARD_SETUP
 138 int ft_board_setup(void *blob, struct bd_info *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         char *fdt_file;
 152         bool m4_booted;
 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         fdt_file = env_get("fdt_file");
 160         m4_booted = m4_parts_booted();
 161
 162         if (fdt_file && !strcmp(fdt_file, "undefined")) {
 163                 if (m4_booted)
 164                         env_set("fdt_file", "imx8qxp-mek-rpmsg.dtb");
 165                 else
 166                         env_set("fdt_file", "imx8qxp-mek.dtb");
 167         }
 168
 169         return 0;
 170 }