board/variscite/imx93_var_som/imx93_var_som.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright 2022 NXP
 * Copyright 2023 Variscite Ltd.
 */

#include <env.h>
#include <init.h>
#include <miiphy.h>
#include <netdev.h>
#include <asm/global_data.h>
#include <asm/arch-imx9/ccm_regs.h>
#include <asm/arch/sys_proto.h>
#include <asm/arch-imx9/imx93_pins.h>
#include <asm/arch/clock.h>
#include <power/pmic.h>
#include <dm/device.h>
#include <dm/uclass.h>

#include "../common/imx9_eeprom.h"
#include "../common/eth.h"

DECLARE_GLOBAL_DATA_PTR;

#define CARRIER_EEPROM_ADDR 0x54

#define UART_PAD_CTRL	(PAD_CTL_DSE(6) | PAD_CTL_FSEL2)
#define WDOG_PAD_CTRL	(PAD_CTL_DSE(6) | PAD_CTL_ODE | PAD_CTL_PUE | PAD_CTL_PE)

static const iomux_v3_cfg_t uart_pads[] = {
	MX93_PAD_UART1_RXD__LPUART1_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
	MX93_PAD_UART1_TXD__LPUART1_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
};

int board_early_init_f(void)
{
	imx_iomux_v3_setup_multiple_pads(uart_pads, ARRAY_SIZE(uart_pads));

	init_uart_clk(LPUART1_CLK_ROOT);

	return 0;
}

int board_phys_sdram_size(phys_size_t *size)
{
	struct var_eeprom *ep = VAR_EEPROM_DATA;

	var_eeprom_get_dram_size(ep, size);
	return 0;
}

int board_phy_config(struct phy_device *phydev)
{
	if (phydev->drv->config)
		phydev->drv->config(phydev);

	return 0;
}

static int setup_eqos(void)
{
	struct blk_ctrl_wakeupmix_regs *bctrl =
		(struct blk_ctrl_wakeupmix_regs *)BLK_CTRL_WAKEUPMIX_BASE_ADDR;

	/* set INTF as RGMII, enable RGMII TXC clock */
	clrsetbits_le32(&bctrl->eqos_gpr,
			BCTRL_GPR_ENET_QOS_INTF_MODE_MASK,
			BCTRL_GPR_ENET_QOS_INTF_SEL_RGMII | BCTRL_GPR_ENET_QOS_CLK_GEN_EN);

	return set_clk_eqos(ENET_125MHZ);
}

int board_init(void)
{
	set_clk_enet(ENET_125MHZ);

	if (CONFIG_IS_ENABLED(DWC_ETH_QOS))
		setup_eqos();

	return 0;
}

#define SDRAM_SIZE_STR_LEN 5

int board_late_init(void)
{
	int ret;
	struct var_eeprom *ep = VAR_EEPROM_DATA;
	char sdram_size_str[SDRAM_SIZE_STR_LEN];
	struct var_carrier_eeprom carrier_eeprom;
	char carrier_rev[CARRIER_REV_LEN] = {0};
	char som_rev[CARRIER_REV_LEN] = {0};

	var_setup_mac(ep);
	var_eeprom_print_prod_info(ep);

	/* SDRAM ENV */
	snprintf(sdram_size_str, SDRAM_SIZE_STR_LEN, "%d",
		 (int)(gd->ram_size / 1024 / 1024));
	env_set("sdram_size", sdram_size_str);

	/* Carrier Board ENV */
	ret = var_carrier_eeprom_read(VAR_CARRIER_EEPROM_I2C_NAME,
				      CARRIER_EEPROM_ADDR, &carrier_eeprom);
	if (!ret) {
		var_carrier_eeprom_get_revision(&carrier_eeprom, carrier_rev,
						sizeof(carrier_rev));
		env_set("carrier_rev", carrier_rev);
	}

	/* SoM Rev ENV */
	snprintf(som_rev, CARRIER_REV_LEN, "som_rev1%d", ep->somrev);
	env_set("som_rev", som_rev);

	if (IS_ENABLED(CONFIG_ENV_IS_IN_MMC))
		board_late_mmc_env_init();

	env_set("sec_boot", "no");
	if (IS_ENABLED(CONFIG_AHAB_BOOT))
		env_set("sec_boot", "yes");

	if (IS_ENABLED(CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG))
		env_set("board_name", "VAR-SOM-MX93");

	return 0;
}