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pmic: add tps62362 simple wrapper code

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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>
This commit is contained in:
Felipe Balbi 2015-01-06 09:14:36 -06:00 • committed by Tom Rini
parent d5c082a32d
commit 78fb6e3166
3 changed files with 77 additions and 0 deletions
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1
drivers/power/pmic/Makefile
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@ -14,5 +14,6 @@ obj-$(CONFIG_POWER_PFUZE100) += pmic_pfuze100.o
obj-$(CONFIG_POWER_TPS65090_I2C) += pmic_tps65090.o obj-$(CONFIG_POWER_TPS65090_I2C) += pmic_tps65090.o
obj-$(CONFIG_POWER_TPS65090_EC) += pmic_tps65090_ec.o obj-$(CONFIG_POWER_TPS65090_EC) += pmic_tps65090_ec.o
obj-$(CONFIG_POWER_TPS65217) += pmic_tps65217.o obj-$(CONFIG_POWER_TPS65217) += pmic_tps65217.o
obj-$(CONFIG_POWER_TPS65218) += pmic_tps62362.o
obj-$(CONFIG_POWER_TPS65218) += pmic_tps65218.o obj-$(CONFIG_POWER_TPS65218) += pmic_tps65218.o
obj-$(CONFIG_POWER_TPS65910) += pmic_tps65910.o obj-$(CONFIG_POWER_TPS65910) += pmic_tps65910.o

47
drivers/power/pmic/pmic_tps62362.c Normal file
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@ -0,0 +1,47 @@
/*
* (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;
}

29
include/power/tps62362.h Normal file
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@ -0,0 +1,29 @@
/*
* (C) Copyright 2014 Texas Instruments Incorporated - http://www.ti.com
* Author: Felipe Balbi <balbi@ti.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef __POWER_TPS62362_H__
#define __POWER_TPS62362_H__
/* I2C chip address */
#define TPS62362_I2C_ADDR 0x60
/* Registers */
#define TPS62362_SET0 0x00
#define TPS62362_SET1 0x01
#define TPS62362_SET2 0x02
#define TPS62362_SET3 0x03
#define TPS62362_NUM_REGS 4
#define TPS62362_DCDC_VOLT_SEL_0950MV 0x12
#define TPS62362_DCDC_VOLT_SEL_1100MV 0x21
#define TPS62362_DCDC_VOLT_SEL_1200MV 0x2b
#define TPS62362_DCDC_VOLT_SEL_1260MV 0x31
#define TPS62362_DCDC_VOLT_SEL_1330MV 0x38
int tps62362_voltage_update(unsigned char reg, unsigned char volt_sel);
int power_tps62362_init(unsigned char bus);
#endif /* __POWER_TPS62362_H__ */