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 <asm/global_data.h>
  12#include <linux/libfdt.h>
  13#include <fdt_support.h>
  14#include <asm/io.h>
  15#include <asm/gpio.h>
  16#include <asm/arch/clock.h>
  17#include <asm/arch/sci/sci.h>
  18#include <asm/arch/imx8-pins.h>
  19#include <asm/arch/iomux.h>
  20#include <asm/arch/sys_proto.h>
  21
  22DECLARE_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
  29static 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
  34static void setup_iomux_uart(void)
  35{
  36        imx8_iomux_setup_multiple_pads(uart0_pads, ARRAY_SIZE(uart0_pads));
  37}
  38
  39int 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        sc_pm_set_resource_power_mode(-1, SC_R_GPIO_5, SC_PM_PW_MODE_ON);
  52
  53        return 0;
  54}
  55
  56#if CONFIG_IS_ENABLED(DM_GPIO)
  57static void board_gpio_init(void)
  58{
  59        /* TODO */
  60}
  61#else
  62static inline void board_gpio_init(void) {}
  63#endif
  64
  65#if IS_ENABLED(CONFIG_FEC_MXC)
  66#include <miiphy.h>
  67
  68int board_phy_config(struct phy_device *phydev)
  69{
  70        phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x1f);
  71        phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, 0x8);
  72
  73        phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x00);
  74        phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, 0x82ee);
  75        phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x05);
  76        phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, 0x100);
  77
  78        if (phydev->drv->config)
  79                phydev->drv->config(phydev);
  80
  81        return 0;
  82}
  83#endif
  84
  85int checkboard(void)
  86{
  87        puts("Board: iMX8QM MEK\n");
  88
  89        build_info();
  90        print_bootinfo();
  91
  92        return 0;
  93}
  94
  95int board_init(void)
  96{
  97        /* Power up base board */
  98        sc_pm_set_resource_power_mode(-1, SC_R_BOARD_R1, SC_PM_PW_MODE_ON);
  99
 100        board_gpio_init();
 101
 102        return 0;
 103}
 104
 105/*
 106 * Board specific reset that is system reset.
 107 */
 108void reset_cpu(void)
 109{
 110        /* TODO */
 111}
 112
 113#ifdef CONFIG_OF_BOARD_SETUP
 114int ft_board_setup(void *blob, struct bd_info *bd)
 115{
 116        return 0;
 117}
 118#endif
 119
 120int board_mmc_get_env_dev(int devno)
 121{
 122        return devno;
 123}
 124
 125int board_late_init(void)
 126{
 127        char *fdt_file;
 128        bool m4_booted;
 129
 130#ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
 131        env_set("board_name", "MEK");
 132        env_set("board_rev", "iMX8QM");
 133#endif
 134
 135        fdt_file = env_get("fdt_file");
 136        m4_booted = m4_parts_booted();
 137
 138        if (fdt_file && !strcmp(fdt_file, "undefined")) {
 139                if (m4_booted)
 140                        env_set("fdt_file", "imx8qm-mek-rpmsg.dtb");
 141                else
 142                        env_set("fdt_file", "imx8qm-mek.dtb");
 143        }
 144
 145        return 0;
 146}
 147