u-boot/drivers/power/pmic/pmic_tps62362.c
Felipe Balbi 78fb6e3166 pmic: add tps62362 simple wrapper code
This regulator is used with AM437x IDK to feed
VDD_MPU, without means to scale VDD_MPU we can't
support higher frequencies.

Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-01-13 15:26:10 -05:00

47 lines
1 KiB
C

/*
* (C) Copyright 2014 Texas Instruments Incorporated - http://www.ti.com
* Author: Felipe Balbi <balbi@ti.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <i2c.h>
#include <asm/errno.h>
#include <power/pmic.h>
#include <power/tps62362.h>
/**
* tps62362_voltage_update() - Function to change a voltage level, as this
* is a multi-step process.
* @reg: Register address to write to
* @volt_sel: Voltage register value to write
* @return: 0 on success, 1 on failure
*/
int tps62362_voltage_update(unsigned char reg, unsigned char volt_sel)
{
if (reg > TPS62362_NUM_REGS)
return 1;
return i2c_write(TPS62362_I2C_ADDR, reg, 1, &volt_sel, 1);
}
int power_tps62362_init(unsigned char bus)
{
static const char name[] = "TPS62362";
struct pmic *p = pmic_alloc();
if (!p) {
printf("%s: POWER allocation error!\n", __func__);
return -ENOMEM;
}
p->name = name;
p->interface = PMIC_I2C;
p->number_of_regs = TPS62362_NUM_REGS;
p->hw.i2c.addr = TPS62362_I2C_ADDR;
p->hw.i2c.tx_num = 1;
p->bus = bus;
return 0;
}