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