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 <oliver.graute@kococonnector.com>
   5  */
   6
   7 #include <common.h>
   8 #include <cpu_func.h>
   9 #include <errno.h>
  10 #include <init.h>
  11 #include <linux/libfdt.h>
  12 #include <asm/io.h>
  13 #include <asm/gpio.h>
  14 #include <asm/arch/clock.h>
  15 #include <asm/arch/sci/sci.h>
  16 #include <asm/arch/imx8-pins.h>
  17 #include <asm/arch/iomux.h>
  18 #include <asm/arch/sys_proto.h>
  19
  20 DECLARE_GLOBAL_DATA_PTR;
  21
  22 #define UART_PAD_CTRL   ((SC_PAD_CONFIG_OUT_IN << PADRING_CONFIG_SHIFT) | \
  23                          (SC_PAD_ISO_OFF << PADRING_LPCONFIG_SHIFT) | \
  24                          (SC_PAD_28FDSOI_DSE_DV_HIGH << PADRING_DSE_SHIFT) | \
  25                          (SC_PAD_28FDSOI_PS_PU << PADRING_PULL_SHIFT))
  26
  27 static iomux_cfg_t uart0_pads[] = {
  28         SC_P_UART0_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
  29         SC_P_UART0_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
  30 };
  31
  32 static void setup_iomux_uart(void)
  33 {
  34         imx8_iomux_setup_multiple_pads(uart0_pads, ARRAY_SIZE(uart0_pads));
  35 }
  36
  37 int board_early_init_f(void)
  38 {
  39         sc_pm_clock_rate_t rate = SC_80MHZ;
  40         int ret;
  41
  42         /* Set UART0 clock root to 80 MHz */
  43         ret = sc_pm_setup_uart(SC_R_UART_0, rate);
  44         if (ret)
  45                 return ret;
  46
  47         setup_iomux_uart();
  48
  49         /* This is needed to because Kernel do not Power Up DC_0 */
  50         sc_pm_set_resource_power_mode(-1, SC_R_DC_0, SC_PM_PW_MODE_ON);
  51         sc_pm_set_resource_power_mode(-1, SC_R_GPIO_5, SC_PM_PW_MODE_ON);
  52
  53         return 0;
  54 }
  55
  56 #if IS_ENABLED(CONFIG_FEC_MXC)
  57 #include <miiphy.h>
  58
  59 int board_phy_config(struct phy_device *phydev)
  60 {
  61 #ifdef CONFIG_FEC_ENABLE_MAX7322
  62         u8 value;
  63
  64         /* This is needed to drive the pads to 1.8V instead of 1.5V */
  65         i2c_set_bus_num(CONFIG_MAX7322_I2C_BUS);
  66
  67         if (!i2c_probe(CONFIG_MAX7322_I2C_ADDR)) {
  68                 /* Write 0x1 to enable O0 output, this device has no addr */
  69                 /* hence addr length is 0 */
  70                 value = 0x1;
  71                 if (dm_i2c_write(CONFIG_MAX7322_I2C_ADDR, 0, 0, &value, 1))
  72                         printf("MAX7322 write failed\n");
  73         } else {
  74                 printf("MAX7322 Not found\n");
  75         }
  76         mdelay(1);
  77 #endif
  78
  79         phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x1f);
  80         phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, 0x8);
  81
  82         phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x00);
  83         phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, 0x82ee);
  84         phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x05);
  85         phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, 0x100);
  86
  87         if (phydev->drv->config)
  88                 phydev->drv->config(phydev);
  89
  90         return 0;
  91 }
  92 #endif
  93
  94 int checkboard(void)
  95 {
  96         puts("Board: ROM-7720-A1 4GB\n");
  97
  98         build_info();
  99         print_bootinfo();
 100
 101         return 0;
 102 }
 103
 104 int board_init(void)
 105 {
 106         /* Power up base board */
 107         sc_pm_set_resource_power_mode(-1, SC_R_BOARD_R1, SC_PM_PW_MODE_ON);
 108
 109         return 0;
 110 }
 111
 112 /*
 113  * Board specific reset that is system reset.
 114  */
 115 void reset_cpu(ulong addr)
 116 {
 117         /* TODO */
 118 }
 119
 120 int board_mmc_get_env_dev(int devno)
 121 {
 122         return devno;
 123 }
 124
 125 int board_late_init(void)
 126 {
 127 #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
 128         env_set("board_name", "ROM-7720-A1");
 129         env_set("board_rev", "iMX8QM");
 130 #endif
 131
 132         env_set("sec_boot", "no");
 133 #ifdef CONFIG_AHAB_BOOT
 134         env_set("sec_boot", "yes");
 135 #endif
 136
 137         return 0;
 138 }