board/asus/grouper/grouper.c

// SPDX-License-Identifier: GPL-2.0+
/*
 *  (C) Copyright 2010-2013
 *  NVIDIA Corporation <www.nvidia.com>
 *
 *  (C) Copyright 2021
 *  Svyatoslav Ryhel <clamor95@gmail.com>
 */

#include <common.h>
#include <dm.h>
#include <fdt_support.h>
#include <i2c.h>
#include <log.h>
#include <asm/arch/pinmux.h>
#include <asm/arch/gp_padctrl.h>
#include <asm/arch/gpio.h>
#include <asm/gpio.h>
#include <linux/delay.h>
#include "pinmux-config-grouper.h"

#define TPS65911_I2C_ADDRESS		0x2D

#define TPS65911_REG_LDO1		0x30
#define TPS65911_REG_DEVCTRL		0x3F
#define   DEVCTRL_PWR_OFF_MASK		BIT(7)
#define   DEVCTRL_DEV_ON_MASK		BIT(2)
#define   DEVCTRL_DEV_OFF_MASK		BIT(0)

#define MAX77663_I2C_ADDRESS		0x3C

#define MAX77663_REG_SD2		0x18
#define MAX77663_REG_LDO3		0x29
#define MAX77663_REG_ONOFF_CFG1		0x41
#define   ONOFF_PWR_OFF			BIT(1)

#ifdef CONFIG_CMD_POWEROFF
#ifdef CONFIG_GROUPER_TPS65911
int do_poweroff(struct cmd_tbl *cmdtp,
		int flag, int argc, char *const argv[])
{
	struct udevice *dev;
	uchar data_buffer[1];
	int ret;

	ret = i2c_get_chip_for_busnum(0, TPS65911_I2C_ADDRESS, 1, &dev);
	if (ret) {
		log_debug("cannot find PMIC I2C chip\n");
		return 0;
	}

	ret = dm_i2c_read(dev, TPS65911_REG_DEVCTRL, data_buffer, 1);
	if (ret)
		return ret;

	data_buffer[0] |= DEVCTRL_PWR_OFF_MASK;

	ret = dm_i2c_write(dev, TPS65911_REG_DEVCTRL, data_buffer, 1);
	if (ret)
		return ret;

	data_buffer[0] |= DEVCTRL_DEV_OFF_MASK;
	data_buffer[0] &= ~DEVCTRL_DEV_ON_MASK;

	ret = dm_i2c_write(dev, TPS65911_REG_DEVCTRL, data_buffer, 1);
	if (ret)
		return ret;

	// wait some time and then print error
	mdelay(5000);

	printf("Failed to power off!!!\n");
	return 1;
}
#endif /* CONFIG_GROUPER_TPS65911 */

#ifdef CONFIG_GROUPER_MAX77663
int do_poweroff(struct cmd_tbl *cmdtp,
		int flag, int argc, char *const argv[])
{
	struct udevice *dev;
	uchar data_buffer[1];
	int ret;

	ret = i2c_get_chip_for_busnum(0, MAX77663_I2C_ADDRESS, 1, &dev);
	if (ret) {
		log_debug("cannot find PMIC I2C chip\n");
		return 0;
	}

	ret = dm_i2c_read(dev, MAX77663_REG_ONOFF_CFG1, data_buffer, 1);
	if (ret)
		return ret;

	data_buffer[0] |= ONOFF_PWR_OFF;

	ret = dm_i2c_write(dev, MAX77663_REG_ONOFF_CFG1, data_buffer, 1);
	if (ret)
		return ret;

	// wait some time and then print error
	mdelay(5000);

	printf("Failed to power off!!!\n");
	return 1;
}
#endif /* CONFIG_GROUPER_MAX77663 */
#endif /* CONFIG_CMD_POWEROFF */

/*
 * Routine: pinmux_init
 * Description: Do individual peripheral pinmux configs
 */
void pinmux_init(void)
{
	pinmux_config_pingrp_table(grouper_pinmux_common,
		ARRAY_SIZE(grouper_pinmux_common));

	pinmux_config_drvgrp_table(grouper_padctrl,
		ARRAY_SIZE(grouper_padctrl));
}

#ifdef CONFIG_MMC_SDHCI_TEGRA
static void __maybe_unused tps65911_voltage_init(void)
{
	struct udevice *dev;
	int ret;

	ret = i2c_get_chip_for_busnum(0, TPS65911_I2C_ADDRESS, 1, &dev);
	if (ret) {
		log_debug("cannot find PMIC I2C chip\n");
		return;
	}

	/* TPS659110: LDO1_REG = 3.3v, ACTIVE to SDMMC4 */
	ret = dm_i2c_reg_write(dev, TPS65911_REG_LDO1, 0xC9);
	if (ret)
		log_debug("vcore_emmc set failed: %d\n", ret);
}

static void __maybe_unused max77663_voltage_init(void)
{
	struct udevice *dev;
	int ret;

	ret = i2c_get_chip_for_busnum(0, MAX77663_I2C_ADDRESS, 1, &dev);
	if (ret) {
		log_debug("cannot find PMIC I2C chip\n");
		return;
	}

	/* 0x60 for 1.8v, bit7:0 = voltage */
	ret = dm_i2c_reg_write(dev, MAX77663_REG_SD2, 0x60);
	if (ret)
		log_debug("vdd_1v8_vio set failed: %d\n", ret);

	/* 0xEC for 3.00v, enabled: bit7:6 = 11 = enable, bit5:0 = voltage */
	ret = dm_i2c_reg_write(dev, MAX77663_REG_LDO3, 0xEC);
	if (ret)
		log_debug("vcore_emmc set failed: %d\n", ret);
}

/*
 * Routine: pin_mux_mmc
 * Description: setup the MMC muxes, power rails, etc.
 */
void pin_mux_mmc(void)
{
#ifdef CONFIG_GROUPER_MAX77663
	/* Bring up eMMC power on MAX PMIC */
	max77663_voltage_init();
#endif

#ifdef CONFIG_GROUPER_TPS65911
	/* Bring up eMMC power on TI PMIC */
	tps65911_voltage_init();
#endif
}
#endif	/* MMC */

#if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
int ft_board_setup(void *blob, struct bd_info *bd)
{
	/* Remove TrustZone nodes */
	fdt_del_node_and_alias(blob, "/firmware");
	fdt_del_node_and_alias(blob, "/reserved-memory/trustzone@bfe00000");

	return 0;
}
#endif