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 <env.h>
  10 #include <errno.h>
  11 #include <init.h>
  12 #include <asm/global_data.h>
  13 #include <linux/delay.h>
  14 #include <linux/libfdt.h>
  15 #include <asm/io.h>
  16 #include <asm/gpio.h>
  17 #include <asm/arch/clock.h>
  18 #include <asm/arch/sci/sci.h>
  19 #include <asm/arch/imx8-pins.h>
  20 #include <asm/arch/iomux.h>
  21 #include <asm/arch/sys_proto.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 uart0_pads[] = {
  31         SC_P_UART0_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
  32         SC_P_UART0_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
  33 };
  34
  35 static void setup_iomux_uart(void)
  36 {
  37         imx8_iomux_setup_multiple_pads(uart0_pads, ARRAY_SIZE(uart0_pads));
  38 }
  39
  40 int board_early_init_f(void)
  41 {
  42         sc_pm_clock_rate_t rate = SC_80MHZ;
  43         int ret;
  44
  45         /* Set UART0 clock root to 80 MHz */
  46         ret = sc_pm_setup_uart(SC_R_UART_0, rate);
  47         if (ret)
  48                 return ret;
  49
  50         setup_iomux_uart();
  51
  52         /* This is needed to because Kernel do not Power Up DC_0 */
  53         sc_pm_set_resource_power_mode(-1, SC_R_DC_0, SC_PM_PW_MODE_ON);
  54         sc_pm_set_resource_power_mode(-1, SC_R_GPIO_5, SC_PM_PW_MODE_ON);
  55
  56         return 0;
  57 }
  58
  59 #if IS_ENABLED(CONFIG_FEC_MXC)
  60 #include <miiphy.h>
  61
  62 int board_phy_config(struct phy_device *phydev)
  63 {
  64 #ifdef CONFIG_FEC_ENABLE_MAX7322
  65         u8 value;
  66
  67         /* This is needed to drive the pads to 1.8V instead of 1.5V */
  68         i2c_set_bus_num(CONFIG_MAX7322_I2C_BUS);
  69
  70         if (!i2c_probe(CONFIG_MAX7322_I2C_ADDR)) {
  71                 /* Write 0x1 to enable O0 output, this device has no addr */
  72                 /* hence addr length is 0 */
  73                 value = 0x1;
  74                 if (dm_i2c_write(CONFIG_MAX7322_I2C_ADDR, 0, 0, &value, 1))
  75                         printf("MAX7322 write failed\n");
  76         } else {
  77                 printf("MAX7322 Not found\n");
  78         }
  79         mdelay(1);
  80 #endif
  81
  82         phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x1f);
  83         phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, 0x8);
  84
  85         phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x00);
  86         phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, 0x82ee);
  87         phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x05);
  88         phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, 0x100);
  89
  90         if (phydev->drv->config)
  91                 phydev->drv->config(phydev);
  92
  93         return 0;
  94 }
  95 #endif
  96
  97 int checkboard(void)
  98 {
  99         puts("Board: ROM-7720-A1 4GB\n");
 100
 101         build_info();
 102         print_bootinfo();
 103
 104         return 0;
 105 }
 106
 107 int board_init(void)
 108 {
 109         /* Power up base board */
 110         sc_pm_set_resource_power_mode(-1, SC_R_BOARD_R1, SC_PM_PW_MODE_ON);
 111
 112         return 0;
 113 }
 114
 115 /*
 116  * Board specific reset that is system reset.
 117  */
 118 void reset_cpu(void)
 119 {
 120         /* TODO */
 121 }
 122
 123 int board_mmc_get_env_dev(int devno)
 124 {
 125         return devno;
 126 }
 127
 128 int board_late_init(void)
 129 {
 130 #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
 131         env_set("board_name", "ROM-7720-A1");
 132         env_set("board_rev", "iMX8QM");
 133 #endif
 134
 135         env_set("sec_boot", "no");
 136 #ifdef CONFIG_AHAB_BOOT
 137         env_set("sec_boot", "yes");
 138 #endif
 139
 140         return 0;
 141 }