board/toradex/colibri-imx8x/colibri-imx8x.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright 2019 Toradex
   4  */
   5
   6 #include <common.h>
   7
   8 #include <asm/arch/clock.h>
   9 #include <asm/arch/imx8-pins.h>
  10 #include <asm/arch/iomux.h>
  11 #include <asm/arch/sci/sci.h>
  12 #include <asm/arch/sys_proto.h>
  13 #include <asm/gpio.h>
  14 #include <asm/io.h>
  15 #include <environment.h>
  16 #include <errno.h>
  17 #include <linux/libfdt.h>
  18
  19 #include "../common/tdx-cfg-block.h"
  20
  21 DECLARE_GLOBAL_DATA_PTR;
  22
  23 #define UART_PAD_CTRL   ((SC_PAD_CONFIG_OUT_IN << PADRING_CONFIG_SHIFT) | \
  24                          (SC_PAD_ISO_OFF << PADRING_LPCONFIG_SHIFT) | \
  25                          (SC_PAD_28FDSOI_DSE_DV_HIGH << PADRING_DSE_SHIFT) | \
  26                          (SC_PAD_28FDSOI_PS_PU << PADRING_PULL_SHIFT))
  27
  28 static iomux_cfg_t uart3_pads[] = {
  29         SC_P_FLEXCAN2_RX | MUX_MODE_ALT(2) | MUX_PAD_CTRL(UART_PAD_CTRL),
  30         SC_P_FLEXCAN2_TX | MUX_MODE_ALT(2) | MUX_PAD_CTRL(UART_PAD_CTRL),
  31         /* Transceiver FORCEOFF# signal, mux to use pull-up */
  32         SC_P_QSPI0B_DQS | MUX_MODE_ALT(4) | MUX_PAD_CTRL(UART_PAD_CTRL),
  33 };
  34
  35 static void setup_iomux_uart(void)
  36 {
  37         imx8_iomux_setup_multiple_pads(uart3_pads, ARRAY_SIZE(uart3_pads));
  38 }
  39
  40 int board_early_init_f(void)
  41 {
  42         sc_pm_clock_rate_t rate;
  43         sc_err_t err = 0;
  44
  45         /*
  46          * This works around that having only UART3 up the baudrate is 1.2M
  47          * instead of 115.2k. Set UART0 clock root to 80 MHz
  48          */
  49         rate = 80000000;
  50         err = sc_pm_set_clock_rate(-1, SC_R_UART_0, SC_PM_CLK_PER, &rate);
  51         if (err != SC_ERR_NONE)
  52                 return 0;
  53
  54         /* Power up UART3 */
  55         err = sc_pm_set_resource_power_mode(-1, SC_R_UART_3, SC_PM_PW_MODE_ON);
  56         if (err != SC_ERR_NONE)
  57                 return 0;
  58
  59         /* Set UART3 clock root to 80 MHz */
  60         rate = 80000000;
  61         err = sc_pm_set_clock_rate(-1, SC_R_UART_3, SC_PM_CLK_PER, &rate);
  62         if (err != SC_ERR_NONE)
  63                 return 0;
  64
  65         /* Enable UART3 clock root */
  66         err = sc_pm_clock_enable(-1, SC_R_UART_3, SC_PM_CLK_PER, true, false);
  67         if (err != SC_ERR_NONE)
  68                 return 0;
  69
  70         setup_iomux_uart();
  71
  72         return 0;
  73 }
  74
  75 #if IS_ENABLED(CONFIG_DM_GPIO)
  76 static void board_gpio_init(void)
  77 {
  78         /* TODO */
  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         if (phydev->drv->config)
  90                 phydev->drv->config(phydev);
  91
  92         return 0;
  93 }
  94 #endif
  95
  96 void build_info(void)
  97 {
  98         u32 sc_build = 0, sc_commit = 0;
  99
 100         /* Get SCFW build and commit id */
 101         sc_misc_build_info(-1, &sc_build, &sc_commit);
 102         if (!sc_build) {
 103                 printf("SCFW does not support build info\n");
 104                 sc_commit = 0; /* Display 0 if build info not supported */
 105         }
 106         printf("Build: SCFW %x\n", sc_commit);
 107 }
 108
 109 int checkboard(void)
 110 {
 111         puts("Model: Toradex Colibri 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 void detail_board_ddr_info(void)
 127 {
 128         puts("\nDDR    ");
 129 }
 130
 131 /*
 132  * Board specific reset that is system reset.
 133  */
 134 void reset_cpu(ulong addr)
 135 {
 136         /* TODO */
 137 }
 138
 139 #if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
 140 int ft_board_setup(void *blob, bd_t *bd)
 141 {
 142         return ft_common_board_setup(blob, bd);
 143 }
 144 #endif
 145
 146 int board_mmc_get_env_dev(int devno)
 147 {
 148         return devno;
 149 }
 150
 151 int board_late_init(void)
 152 {
 153 #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
 154 /* TODO move to common */
 155         env_set("board_name", "Colibri iMX8QXP");
 156         env_set("board_rev", "v1.0");
 157 #endif
 158
 159         return 0;
 160 }