board/toradex/apalis-imx8x/apalis-imx8x.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright 2020 Toradex
   4  */
   5
   6 #include <common.h>
   7 #include <cpu_func.h>
   8 #include <init.h>
   9
  10 #include <asm/arch/clock.h>
  11 #include <asm/arch/imx8-pins.h>
  12 #include <asm/arch/iomux.h>
  13 #include <asm/arch/sci/sci.h>
  14 #include <asm/arch/sys_proto.h>
  15 #include <asm/global_data.h>
  16 #include <asm/gpio.h>
  17 #include <asm/io.h>
  18 #include <env.h>
  19 #include <errno.h>
  20 #include <linux/libfdt.h>
  21
  22 #include "../common/tdx-cfg-block.h"
  23
  24 DECLARE_GLOBAL_DATA_PTR;
  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 uart1_pads[] = {
  32         SC_P_UART1_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
  33         SC_P_UART1_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
  34 };
  35
  36 static void setup_iomux_uart(void)
  37 {
  38         imx8_iomux_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads));
  39 }
  40
  41 void board_mem_get_layout(u64 *phys_sdram_1_start,
  42                           u64 *phys_sdram_1_size,
  43                           u64 *phys_sdram_2_start,
  44                           u64 *phys_sdram_2_size)
  45 {
  46         u32 is_dualx = 0, val = 0;
  47         sc_err_t scierr = sc_misc_otp_fuse_read(-1, 6, &val);
  48
  49         if (scierr == SC_ERR_NONE) {
  50                 /* DX has two A35 cores disabled */
  51                 is_dualx = (val & 0xf) != 0x0;
  52         }
  53
  54         *phys_sdram_1_start = PHYS_SDRAM_1;
  55         if (is_dualx)
  56                 /* Our DX based SKUs only have 1 GB RAM */
  57                 *phys_sdram_1_size = SZ_1G;
  58         else
  59                 *phys_sdram_1_size = PHYS_SDRAM_1_SIZE;
  60         *phys_sdram_2_start = PHYS_SDRAM_2;
  61         *phys_sdram_2_size = PHYS_SDRAM_2_SIZE;
  62 }
  63
  64 int board_early_init_f(void)
  65 {
  66         sc_pm_clock_rate_t rate;
  67         sc_err_t err = 0;
  68
  69         /*
  70          * This works around that having only UART3 up the baudrate is 1.2M
  71          * instead of 115.2k. Set UART0 clock root to 80 MHz
  72          */
  73         rate = 80000000;
  74         err = sc_pm_set_clock_rate(-1, SC_R_UART_0, SC_PM_CLK_PER, &rate);
  75         if (err != SC_ERR_NONE)
  76                 return 0;
  77
  78         /* Set UART3 clock root to 80 MHz and enable it */
  79         rate = SC_80MHZ;
  80         err = sc_pm_setup_uart(SC_R_UART_1, rate);
  81         if (err != SC_ERR_NONE)
  82                 return 0;
  83
  84         setup_iomux_uart();
  85
  86         return 0;
  87 }
  88
  89 #if IS_ENABLED(CONFIG_DM_GPIO)
  90 static void board_gpio_init(void)
  91 {
  92         /* TODO */
  93 }
  94 #else
  95 static inline void board_gpio_init(void) {}
  96 #endif
  97
  98 #if IS_ENABLED(CONFIG_FEC_MXC)
  99 #include <miiphy.h>
 100
 101 int board_phy_config(struct phy_device *phydev)
 102 {
 103         if (phydev->drv->config)
 104                 phydev->drv->config(phydev);
 105
 106         return 0;
 107 }
 108 #endif
 109
 110 int checkboard(void)
 111 {
 112         puts("Model: Toradex Apalis iMX8X\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 /*
 128  * Board specific reset that is system reset.
 129  */
 130 void reset_cpu(ulong addr)
 131 {
 132         /* TODO */
 133 }
 134
 135 #if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
 136 int ft_board_setup(void *blob, struct bd_info *bd)
 137 {
 138         return ft_common_board_setup(blob, bd);
 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 #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
 150 /* TODO move to common */
 151         env_set("board_name", "Apalis iMX8X");
 152 #endif
 153
 154         return 0;
 155 }