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/delay.h>
  12 #include <linux/libfdt.h>
  13 #include <fsl_esdhc_imx.h>
  14 #include <fdt_support.h>
  15 #include <asm/io.h>
  16 #include <asm/gpio.h>
  17 #include <asm/arch/clock.h>
  18 #include <asm/arch/sci/sci.h>
  19 #include <asm/arch/imx8-pins.h>
  20 #include <asm/arch/snvs_security_sc.h>
  21 #include <asm/arch/iomux.h>
  22 #include <asm/arch/sys_proto.h>
  23
  24 DECLARE_GLOBAL_DATA_PTR;
  25
  26 #define GPIO_PAD_CTRL   ((SC_PAD_CONFIG_NORMAL << 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 #define UART_PAD_CTRL   ((SC_PAD_CONFIG_OUT_IN << PADRING_CONFIG_SHIFT) | \
  32                          (SC_PAD_ISO_OFF << PADRING_LPCONFIG_SHIFT) | \
  33                          (SC_PAD_28FDSOI_DSE_DV_HIGH << PADRING_DSE_SHIFT) | \
  34                          (SC_PAD_28FDSOI_PS_PU << PADRING_PULL_SHIFT))
  35
  36 static iomux_cfg_t uart0_pads[] = {
  37         SC_P_UART0_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
  38         SC_P_UART0_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
  39 };
  40
  41 static void setup_iomux_uart(void)
  42 {
  43         imx8_iomux_setup_multiple_pads(uart0_pads, ARRAY_SIZE(uart0_pads));
  44 }
  45
  46 int board_early_init_f(void)
  47 {
  48         sc_pm_clock_rate_t rate = SC_80MHZ;
  49         int ret;
  50
  51         /* Set UART0 clock root to 80 MHz */
  52         ret = sc_pm_setup_uart(SC_R_UART_0, rate);
  53         if (ret)
  54                 return ret;
  55
  56         setup_iomux_uart();
  57
  58         return 0;
  59 }
  60
  61 #if CONFIG_IS_ENABLED(DM_GPIO)
  62 static void board_gpio_init(void)
  63 {
  64         struct gpio_desc desc;
  65         int ret;
  66
  67         ret = dm_gpio_lookup_name("gpio@1a_3", &desc);
  68         if (ret)
  69                 return;
  70
  71         ret = dm_gpio_request(&desc, "bb_per_rst_b");
  72         if (ret)
  73                 return;
  74
  75         dm_gpio_set_dir_flags(&desc, GPIOD_IS_OUT);
  76         dm_gpio_set_value(&desc, 0);
  77         udelay(50);
  78         dm_gpio_set_value(&desc, 1);
  79 }
  80 #else
  81 static inline void board_gpio_init(void) {}
  82 #endif
  83
  84 #if IS_ENABLED(CONFIG_FEC_MXC)
  85 #include <miiphy.h>
  86
  87 int board_phy_config(struct phy_device *phydev)
  88 {
  89         phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x1f);
  90         phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, 0x8);
  91
  92         phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x05);
  93         phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, 0x100);
  94
  95         if (phydev->drv->config)
  96                 phydev->drv->config(phydev);
  97
  98         return 0;
  99 }
 100 #endif
 101
 102 int checkboard(void)
 103 {
 104         puts("Board: iMX8QXP MEK\n");
 105
 106         build_info();
 107         print_bootinfo();
 108
 109         return 0;
 110 }
 111
 112 int board_init(void)
 113 {
 114         board_gpio_init();
 115
 116 #ifdef CONFIG_IMX_SNVS_SEC_SC_AUTO
 117         {
 118                 int ret = snvs_security_sc_init();
 119
 120                 if (ret)
 121                         return ret;
 122         }
 123 #endif
 124
 125         return 0;
 126 }
 127
 128 /*
 129  * Board specific reset that is system reset.
 130  */
 131 void reset_cpu(ulong addr)
 132 {
 133         /* TODO */
 134 }
 135
 136 #ifdef CONFIG_OF_BOARD_SETUP
 137 int ft_board_setup(void *blob, bd_t *bd)
 138 {
 139         return 0;
 140 }
 141 #endif
 142
 143 int board_mmc_get_env_dev(int devno)
 144 {
 145         return devno;
 146 }
 147
 148 int board_late_init(void)
 149 {
 150         char *fdt_file;
 151         bool m4_booted;
 152
 153 #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
 154         env_set("board_name", "MEK");
 155         env_set("board_rev", "iMX8QXP");
 156 #endif
 157
 158         fdt_file = env_get("fdt_file");
 159         m4_booted = m4_parts_booted();
 160
 161         if (fdt_file && !strcmp(fdt_file, "undefined")) {
 162                 if (m4_booted)
 163                         env_set("fdt_file", "imx8qxp-mek-rpmsg.dtb");
 164                 else
 165                         env_set("fdt_file", "imx8qxp-mek.dtb");
 166         }
 167
 168         return 0;
 169 }