LXR uboot/board/freescale/imx8qm_mek/imx8qm

   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 * Copyright 2018 NXP
   4 */
   5
   6#include <common.h>
   7#include <cpu_func.h>
   8#include <env.h>
   9#include <errno.h>
  10#include <init.h>
  11#include <linux/libfdt.h>
  12#include <fdt_support.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
  21DECLARE_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
  28static 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
  33static void setup_iomux_uart(void)
  34{
  35        imx8_iomux_setup_multiple_pads(uart0_pads, ARRAY_SIZE(uart0_pads));
  36}
  37
  38int 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        sc_pm_set_resource_power_mode(-1, SC_R_GPIO_5, SC_PM_PW_MODE_ON);
  51
  52        return 0;
  53}
  54
  55#if CONFIG_IS_ENABLED(DM_GPIO)
  56static void board_gpio_init(void)
  57{
  58        /* TODO */
  59}
  60#else
  61static inline void board_gpio_init(void) {}
  62#endif
  63
  64#if IS_ENABLED(CONFIG_FEC_MXC)
  65#include <miiphy.h>
  66
  67int board_phy_config(struct phy_device *phydev)
  68{
  69        phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x1f);
  70        phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, 0x8);
  71
  72        phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x00);
  73        phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, 0x82ee);
  74        phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x05);
  75        phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, 0x100);
  76
  77        if (phydev->drv->config)
  78                phydev->drv->config(phydev);
  79
  80        return 0;
  81}
  82#endif
  83
  84int checkboard(void)
  85{
  86        puts("Board: iMX8QM MEK\n");
  87
  88        build_info();
  89        print_bootinfo();
  90
  91        return 0;
  92}
  93
  94int board_init(void)
  95{
  96        /* Power up base board */
  97        sc_pm_set_resource_power_mode(-1, SC_R_BOARD_R1, SC_PM_PW_MODE_ON);
  98
  99        board_gpio_init();
 100
 101        return 0;
 102}
 103
 104/*
 105 * Board specific reset that is system reset.
 106 */
 107void reset_cpu(ulong addr)
 108{
 109        /* TODO */
 110}
 111
 112#ifdef CONFIG_OF_BOARD_SETUP
 113int ft_board_setup(void *blob, struct bd_info *bd)
 114{
 115        return 0;
 116}
 117#endif
 118
 119int board_mmc_get_env_dev(int devno)
 120{
 121        return devno;
 122}
 123
 124int board_late_init(void)
 125{
 126        char *fdt_file;
 127        bool m4_booted;
 128
 129#ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
 130        env_set("board_name", "MEK");
 131        env_set("board_rev", "iMX8QM");
 132#endif
 133
 134        fdt_file = env_get("fdt_file");
 135        m4_booted = m4_parts_booted();
 136
 137        if (fdt_file && !strcmp(fdt_file, "undefined")) {
 138                if (m4_booted)
 139                        env_set("fdt_file", "imx8qm-mek-rpmsg.dtb");
 140                else
 141                        env_set("fdt_file", "imx8qm-mek.dtb");
 142        }
 143
 144        return 0;
 145}
 146