u-boot/board/technexion/pico-imx8mq/pico-imx8mq.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright 2018 NXP
 */

#include <common.h>
#include <env.h>
#include <init.h>
#include <malloc.h>
#include <errno.h>
#include <asm/io.h>
#include <miiphy.h>
#include <netdev.h>
#include <asm/mach-imx/iomux-v3.h>
#include <asm-generic/gpio.h>
#include <fsl_esdhc_imx.h>
#include <mmc.h>
#include <asm/arch/imx8mq_pins.h>
#include <asm/arch/sys_proto.h>
#include <asm/mach-imx/gpio.h>
#include <asm/mach-imx/mxc_i2c.h>
#include <asm/arch/clock.h>
#include <linux/delay.h>
#include <spl.h>
#include <power/pmic.h>

DECLARE_GLOBAL_DATA_PTR;

#define UART_PAD_CTRL	(PAD_CTL_DSE6 | PAD_CTL_FSEL1)

#define WDOG_PAD_CTRL	(PAD_CTL_DSE6 | PAD_CTL_HYS | PAD_CTL_PUE)

static iomux_v3_cfg_t const wdog_pads[] = {
	IMX8MQ_PAD_GPIO1_IO02__WDOG1_WDOG_B | MUX_PAD_CTRL(WDOG_PAD_CTRL),
};

static iomux_v3_cfg_t const uart_pads[] = {
	IMX8MQ_PAD_UART1_RXD__UART1_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
	IMX8MQ_PAD_UART1_TXD__UART1_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
};

int board_early_init_f(void)
{
	struct wdog_regs *wdog = (struct wdog_regs *)WDOG1_BASE_ADDR;

	imx_iomux_v3_setup_multiple_pads(wdog_pads, ARRAY_SIZE(wdog_pads));
	set_wdog_reset(wdog);

	imx_iomux_v3_setup_multiple_pads(uart_pads, ARRAY_SIZE(uart_pads));

	return 0;
}

int board_phys_sdram_size(phys_size_t *size)
{
	int ddr_size = readl(M4_BOOTROM_BASE_ADDR);

	if (ddr_size == 0x4) {
		*size = 0x100000000;
	} else if (ddr_size == 0x3) {
		*size = 0xc0000000;
	} else if (ddr_size == 0x2) {
		*size = 0x80000000;
	} else if (ddr_size == 0x1) {
		*size = 0x40000000;
	} else {
		printf("Unknown DDR type!!!\n");
		return -1;
	}

	return 0;
}

#ifdef CONFIG_FEC_MXC
#define FEC_RST_PAD IMX_GPIO_NR(1, 9)
#define FEC_PWR_PAD IMX_GPIO_NR(1, 0)
static iomux_v3_cfg_t const fec1_pads[] = {
	/* Reset */
	IMX8MQ_PAD_GPIO1_IO09__GPIO1_IO9 | MUX_PAD_CTRL(NO_PAD_CTRL),
	/* Power */
	IMX8MQ_PAD_GPIO1_IO00__GPIO1_IO0 | MUX_PAD_CTRL(NO_PAD_CTRL),
};

static void setup_iomux_fec(void)
{
	imx_iomux_v3_setup_multiple_pads(fec1_pads, ARRAY_SIZE(fec1_pads));

	gpio_request(IMX_GPIO_NR(1, 0), "fec1_pwr");
	gpio_direction_output(IMX_GPIO_NR(1, 0), 1);
	udelay(500);

	gpio_request(IMX_GPIO_NR(1, 9), "fec1_rst");
	gpio_direction_output(IMX_GPIO_NR(1, 9), 0);
	udelay(500);
	gpio_direction_output(IMX_GPIO_NR(1, 9), 1);
}

static int setup_fec(void)
{
	struct iomuxc_gpr_base_regs *gpr =
		(struct iomuxc_gpr_base_regs *)IOMUXC_GPR_BASE_ADDR;

	setup_iomux_fec();

	/* Use 125M anatop REF_CLK1 for ENET1, not from external */
	clrsetbits_le32(&gpr->gpr[1], BIT(13) | BIT(17), 0);
	return set_clk_enet(ENET_125MHZ);
}

int board_phy_config(struct phy_device *phydev)
{
	/* enable rgmii rxc skew and phy mode select to RGMII copper */
	phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x1f);
	phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, 0x8);

	phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x05);
	phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, 0x100);

	if (phydev->drv->config)
		phydev->drv->config(phydev);
	return 0;
}
#endif

int board_init(void)
{
#ifdef CONFIG_FEC_MXC
	setup_fec();
#endif

	return 0;
}

int board_mmc_get_env_dev(int devno)
{
	return devno;
}

int board_late_init(void)
{
#ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
	env_set("board_rev", "iMX8MQ");
#endif
	return 0;
}