1// SPDX-License-Identifier: GPL-2.0-or-later 2/* 3 * (C) Copyright 2010-2013 4 * NVIDIA Corporation <www.nvidia.com> 5 * 6 * (C) Copyright 2021 7 * Svyatoslav Ryhel <clamor95@gmail.com> 8 */ 9 10#include <common.h> 11#include <asm/arch-tegra/tegra_i2c.h> 12#include <linux/delay.h> 13 14/* I2C addr is in 8 bit */ 15#define TPS65911_I2C_ADDR 0x5A 16#define TPS65911_VDDCTRL_OP_REG 0x28 17#define TPS65911_VDDCTRL_SR_REG 0x27 18#define TPS65911_VDDCTRL_OP_DATA (0x2400 | TPS65911_VDDCTRL_OP_REG) 19#define TPS65911_VDDCTRL_SR_DATA (0x0100 | TPS65911_VDDCTRL_SR_REG) 20 21void pmic_enable_cpu_vdd(void) 22{ 23 /* 24 * Bring up CPU VDD via the TPS65911x PMIC on the DVC I2C bus. 25 * First set VDD to 1.0125V, then enable the VDD regulator. 26 */ 27 udelay(1000); 28 tegra_i2c_ll_write(TPS65911_I2C_ADDR, 29 TPS65911_VDDCTRL_OP_DATA); 30 udelay(1000); 31 tegra_i2c_ll_write(TPS65911_I2C_ADDR, 32 TPS65911_VDDCTRL_SR_DATA); 33 udelay(10 * 1000); 34} 35