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/gpio.h>
  16 #include <asm/io.h>
  17 #include <env.h>
  18 #include <errno.h>
  19 #include <linux/libfdt.h>
  20
  21 #include "../common/tdx-cfg-block.h"
  22
  23 DECLARE_GLOBAL_DATA_PTR;
  24
  25 #define UART_PAD_CTRL   ((SC_PAD_CONFIG_OUT_IN << 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 static iomux_cfg_t uart1_pads[] = {
  31         SC_P_UART1_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
  32         SC_P_UART1_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
  33 };
  34
  35 static void setup_iomux_uart(void)
  36 {
  37         imx8_iomux_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads));
  38 }
  39
  40 void board_mem_get_layout(u64 *phys_sdram_1_start,
  41                           u64 *phys_sdram_1_size,
  42                           u64 *phys_sdram_2_start,
  43                           u64 *phys_sdram_2_size)
  44 {
  45         u32 is_dualx = 0, val = 0;
  46         sc_err_t scierr = sc_misc_otp_fuse_read(-1, 6, &val);
  47
  48         if (scierr == SC_ERR_NONE) {
  49                 /* DX has two A35 cores disabled */
  50                 is_dualx = (val & 0xf) != 0x0;
  51         }
  52
  53         *phys_sdram_1_start = PHYS_SDRAM_1;
  54         if (is_dualx)
  55                 /* Our DX based SKUs only have 1 GB RAM */
  56                 *phys_sdram_1_size = SZ_1G;
  57         else
  58                 *phys_sdram_1_size = PHYS_SDRAM_1_SIZE;
  59         *phys_sdram_2_start = PHYS_SDRAM_2;
  60         *phys_sdram_2_size = PHYS_SDRAM_2_SIZE;
  61 }
  62
  63 int board_early_init_f(void)
  64 {
  65         sc_pm_clock_rate_t rate;
  66         sc_err_t err = 0;
  67
  68         /*
  69          * This works around that having only UART3 up the baudrate is 1.2M
  70          * instead of 115.2k. Set UART0 clock root to 80 MHz
  71          */
  72         rate = 80000000;
  73         err = sc_pm_set_clock_rate(-1, SC_R_UART_0, SC_PM_CLK_PER, &rate);
  74         if (err != SC_ERR_NONE)
  75                 return 0;
  76
  77         /* Set UART3 clock root to 80 MHz and enable it */
  78         rate = SC_80MHZ;
  79         err = sc_pm_setup_uart(SC_R_UART_1, rate);
  80         if (err != SC_ERR_NONE)
  81                 return 0;
  82
  83         setup_iomux_uart();
  84
  85         return 0;
  86 }
  87
  88 #if IS_ENABLED(CONFIG_DM_GPIO)
  89 static void board_gpio_init(void)
  90 {
  91         /* TODO */
  92 }
  93 #else
  94 static inline void board_gpio_init(void) {}
  95 #endif
  96
  97 #if IS_ENABLED(CONFIG_FEC_MXC)
  98 #include <miiphy.h>
  99
 100 int board_phy_config(struct phy_device *phydev)
 101 {
 102         if (phydev->drv->config)
 103                 phydev->drv->config(phydev);
 104
 105         return 0;
 106 }
 107 #endif
 108
 109 int checkboard(void)
 110 {
 111         puts("Model: Toradex Apalis iMX8X\n");
 112
 113         build_info();
 114         print_bootinfo();
 115
 116         return 0;
 117 }
 118
 119 int board_init(void)
 120 {
 121         board_gpio_init();
 122
 123         return 0;
 124 }
 125
 126 /*
 127  * Board specific reset that is system reset.
 128  */
 129 void reset_cpu(ulong addr)
 130 {
 131         /* TODO */
 132 }
 133
 134 #if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
 135 int ft_board_setup(void *blob, struct bd_info *bd)
 136 {
 137         return ft_common_board_setup(blob, bd);
 138 }
 139 #endif
 140
 141 int board_mmc_get_env_dev(int devno)
 142 {
 143         return devno;
 144 }
 145
 146 int board_late_init(void)
 147 {
 148 #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
 149 /* TODO move to common */
 150         env_set("board_name", "Apalis iMX8X");
 151 #endif
 152
 153         return 0;
 154 }