board/nvidia/tegratab/tegratab-spl.c

// SPDX-License-Identifier: GPL-2.0+
/*
 *  TegraTab SPL stage configuration
 *
 *  (C) Copyright 2010-2013
 *  NVIDIA Corporation <www.nvidia.com>
 *
 *  (C) Copyright 2023
 *  Svyatoslav Ryhel <clamor95@gmail.com>
 */

#include <asm/arch/tegra.h>
#include <asm/arch-tegra/tegra_i2c.h>
#include <linux/delay.h>

#define TPS65913_I2C_ADDR		(0x58 << 1)

#define TPS65913_SMPS12_CTRL		0x20
#define TPS65913_SMPS12_VOLTAGE		0x23
#define TPS65913_SMPS45_CTRL		0x28
#define TPS65913_SMPS45_VOLTAGE		0x2B

#define TPS65913_SMPS12_CTRL_DATA	(0x5100 | TPS65913_SMPS12_CTRL)
#define TPS65913_SMPS12_VOLTAGE_DATA	(0x3900 | TPS65913_SMPS12_VOLTAGE)
#define TPS65913_SMPS45_CTRL_DATA	(0x5100 | TPS65913_SMPS45_CTRL)
#define TPS65913_SMPS45_VOLTAGE_DATA	(0x4c00 | TPS65913_SMPS45_VOLTAGE)

void pmic_enable_cpu_vdd(void)
{
	/* Set CORE VDD to 1.200V. */
	tegra_i2c_ll_write(TPS65913_I2C_ADDR, TPS65913_SMPS45_VOLTAGE_DATA);
	udelay(1000);
	tegra_i2c_ll_write(TPS65913_I2C_ADDR, TPS65913_SMPS45_CTRL_DATA);

	udelay(1000);

	/* Set CPU VDD to 1.0125V. */
	tegra_i2c_ll_write(TPS65913_I2C_ADDR, TPS65913_SMPS12_VOLTAGE_DATA);
	udelay(1000);
	tegra_i2c_ll_write(TPS65913_I2C_ADDR, TPS65913_SMPS12_CTRL_DATA);
	udelay(10 * 1000);
}