board/advantech/imx8qm_rom7720_a1/imx8qm_rom7720_a1.c

   1 // SPDX-License-Identifier:     GPL-2.0+
   2 /*
   3  * Copyright 2017-2018 NXP
   4  * Copyright (C) 2019 Oliver Graute <[email protected]>
   5  */
   6
   7 #include <common.h>
   8 #include <cpu_func.h>
   9 #include <env.h>
  10 #include <errno.h>
  11 #include <init.h>
  12 #include <linux/libfdt.h>
  13 #include <asm/io.h>
  14 #include <asm/gpio.h>
  15 #include <asm/arch/clock.h>
  16 #include <asm/arch/sci/sci.h>
  17 #include <asm/arch/imx8-pins.h>
  18 #include <asm/arch/iomux.h>
  19 #include <asm/arch/sys_proto.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 uart0_pads[] = {
  29         SC_P_UART0_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
  30         SC_P_UART0_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
  31 };
  32
  33 static void setup_iomux_uart(void)
  34 {
  35         imx8_iomux_setup_multiple_pads(uart0_pads, ARRAY_SIZE(uart0_pads));
  36 }
  37
  38 int board_early_init_f(void)
  39 {
  40         sc_pm_clock_rate_t rate = SC_80MHZ;
  41         int ret;
  42
  43         /* Set UART0 clock root to 80 MHz */
  44         ret = sc_pm_setup_uart(SC_R_UART_0, rate);
  45         if (ret)
  46                 return ret;
  47
  48         setup_iomux_uart();
  49
  50         /* This is needed to because Kernel do not Power Up DC_0 */
  51         sc_pm_set_resource_power_mode(-1, SC_R_DC_0, SC_PM_PW_MODE_ON);
  52         sc_pm_set_resource_power_mode(-1, SC_R_GPIO_5, SC_PM_PW_MODE_ON);
  53
  54         return 0;
  55 }
  56
  57 #if IS_ENABLED(CONFIG_FEC_MXC)
  58 #include <miiphy.h>
  59
  60 int board_phy_config(struct phy_device *phydev)
  61 {
  62 #ifdef CONFIG_FEC_ENABLE_MAX7322
  63         u8 value;
  64
  65         /* This is needed to drive the pads to 1.8V instead of 1.5V */
  66         i2c_set_bus_num(CONFIG_MAX7322_I2C_BUS);
  67
  68         if (!i2c_probe(CONFIG_MAX7322_I2C_ADDR)) {
  69                 /* Write 0x1 to enable O0 output, this device has no addr */
  70                 /* hence addr length is 0 */
  71                 value = 0x1;
  72                 if (dm_i2c_write(CONFIG_MAX7322_I2C_ADDR, 0, 0, &value, 1))
  73                         printf("MAX7322 write failed\n");
  74         } else {
  75                 printf("MAX7322 Not found\n");
  76         }
  77         mdelay(1);
  78 #endif
  79
  80         phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x1f);
  81         phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, 0x8);
  82
  83         phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x00);
  84         phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, 0x82ee);
  85         phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x05);
  86         phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, 0x100);
  87
  88         if (phydev->drv->config)
  89                 phydev->drv->config(phydev);
  90
  91         return 0;
  92 }
  93 #endif
  94
  95 int checkboard(void)
  96 {
  97         puts("Board: ROM-7720-A1 4GB\n");
  98
  99         build_info();
 100         print_bootinfo();
 101
 102         return 0;
 103 }
 104
 105 int board_init(void)
 106 {
 107         /* Power up base board */
 108         sc_pm_set_resource_power_mode(-1, SC_R_BOARD_R1, SC_PM_PW_MODE_ON);
 109
 110         return 0;
 111 }
 112
 113 /*
 114  * Board specific reset that is system reset.
 115  */
 116 void reset_cpu(ulong addr)
 117 {
 118         /* TODO */
 119 }
 120
 121 int board_mmc_get_env_dev(int devno)
 122 {
 123         return devno;
 124 }
 125
 126 int board_late_init(void)
 127 {
 128 #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
 129         env_set("board_name", "ROM-7720-A1");
 130         env_set("board_rev", "iMX8QM");
 131 #endif
 132
 133         env_set("sec_boot", "no");
 134 #ifdef CONFIG_AHAB_BOOT
 135         env_set("sec_boot", "yes");
 136 #endif
 137
 138         return 0;
 139 }