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/*
* (C) Copyright 2013
* NVIDIA Corporation <www.nvidia.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/io.h>
#include <asm/arch-tegra/tegra_i2c.h>
#include "as3722_init.h"
/* AS3722-PMIC-specific early init code - get CPU rails up, etc */
void tegra_i2c_ll_write_addr(uint addr, uint config)
{
struct i2c_ctlr *reg = (struct i2c_ctlr *)TEGRA_DVC_BASE;
writel(addr, ®->cmd_addr0);
writel(config, ®->cnfg);
}
void tegra_i2c_ll_write_data(uint data, uint config)
{
struct i2c_ctlr *reg = (struct i2c_ctlr *)TEGRA_DVC_BASE;
writel(data, ®->cmd_data1);
writel(config, ®->cnfg);
}
void pmic_enable_cpu_vdd(void)
{
debug("%s entry\n", __func__);
/* Don't need to set up VDD_CORE - already done - by OTP */
debug("%s: Setting VDD_CPU to 1.0V via AS3722 reg 0/4D\n", __func__);
/*
* Bring up VDD_CPU via the AS3722 PMIC on the PWR I2C bus.
* First set VDD to 1.0V, then enable the VDD regulator.
*/
tegra_i2c_ll_write_addr(AS3722_I2C_ADDR, 2);
tegra_i2c_ll_write_data(AS3722_SD0VOLTAGE_DATA, I2C_SEND_2_BYTES);
/*
* Don't write SDCONTROL - it's already 0x7F, i.e. all SDs enabled.
* tegra_i2c_ll_write_data(AS3722_SD0CONTROL_DATA, I2C_SEND_2_BYTES);
*/
udelay(10 * 1000);
debug("%s: Setting VDD_GPU to 1.0V via AS3722 reg 6/4D\n", __func__);
/*
* Bring up VDD_GPU via the AS3722 PMIC on the PWR I2C bus.
* First set VDD to 1.0V, then enable the VDD regulator.
*/
tegra_i2c_ll_write_addr(AS3722_I2C_ADDR, 2);
tegra_i2c_ll_write_data(AS3722_SD6VOLTAGE_DATA, I2C_SEND_2_BYTES);
/*
* Don't write SDCONTROL - it's already 0x7F, i.e. all SDs enabled.
* tegra_i2c_ll_write_data(AS3722_SD6CONTROL_DATA, I2C_SEND_2_BYTES);
*/
udelay(10 * 1000);
debug("%s: Set VPP_FUSE to 1.2V via AS3722 reg 0x12/4E\n", __func__);
/*
* Bring up VPP_FUSE via the AS3722 PMIC on the PWR I2C bus.
* First set VDD to 1.2V, then enable the VDD regulator.
*/
tegra_i2c_ll_write_addr(AS3722_I2C_ADDR, 2);
tegra_i2c_ll_write_data(AS3722_LDO2VOLTAGE_DATA, I2C_SEND_2_BYTES);
/*
* Don't write LDCONTROL - it's already 0xFF, i.e. all LDOs enabled.
* tegra_i2c_ll_write_data(AS3722_LDO2CONTROL_DATA, I2C_SEND_2_BYTES);
*/
udelay(10 * 1000);
debug("%s: Set VDD_SDMMC to 3.3V via AS3722 reg 0x16/4E\n", __func__);
/*
* Bring up VDD_SDMMC via the AS3722 PMIC on the PWR I2C bus.
* First set it to bypass 3.3V straight thru, then enable the regulator
*
* NOTE: We do this early because doing it later seems to hose the CPU
* power rail/partition startup. Need to debug.
*/
tegra_i2c_ll_write_addr(AS3722_I2C_ADDR, 2);
tegra_i2c_ll_write_data(AS3722_LDO6VOLTAGE_DATA, I2C_SEND_2_BYTES);
/*
* Don't write LDCONTROL - it's already 0xFF, i.e. all LDOs enabled.
* tegra_i2c_ll_write_data(AS3722_LDO6CONTROL_DATA, I2C_SEND_2_BYTES);
*/
udelay(10 * 1000);
}
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