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