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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>
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3 changed files with 77 additions and 0 deletions
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@ -14,5 +14,6 @@ obj-$(CONFIG_POWER_PFUZE100) += pmic_pfuze100.o
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obj-$(CONFIG_POWER_TPS65090_I2C) += pmic_tps65090.o
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obj-$(CONFIG_POWER_TPS65090_EC) += pmic_tps65090_ec.o
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obj-$(CONFIG_POWER_TPS65217) += pmic_tps65217.o
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obj-$(CONFIG_POWER_TPS65218) += pmic_tps62362.o
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obj-$(CONFIG_POWER_TPS65218) += pmic_tps65218.o
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obj-$(CONFIG_POWER_TPS65910) += pmic_tps65910.o
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47
drivers/power/pmic/pmic_tps62362.c
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47
drivers/power/pmic/pmic_tps62362.c
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/*
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* (C) Copyright 2014 Texas Instruments Incorporated - http://www.ti.com
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* Author: Felipe Balbi <balbi@ti.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <i2c.h>
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#include <asm/errno.h>
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#include <power/pmic.h>
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#include <power/tps62362.h>
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/**
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* tps62362_voltage_update() - Function to change a voltage level, as this
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* is a multi-step process.
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* @reg: Register address to write to
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* @volt_sel: Voltage register value to write
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* @return: 0 on success, 1 on failure
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*/
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int tps62362_voltage_update(unsigned char reg, unsigned char volt_sel)
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{
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if (reg > TPS62362_NUM_REGS)
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return 1;
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return i2c_write(TPS62362_I2C_ADDR, reg, 1, &volt_sel, 1);
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}
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int power_tps62362_init(unsigned char bus)
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{
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static const char name[] = "TPS62362";
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struct pmic *p = pmic_alloc();
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if (!p) {
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printf("%s: POWER allocation error!\n", __func__);
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return -ENOMEM;
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}
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p->name = name;
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p->interface = PMIC_I2C;
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p->number_of_regs = TPS62362_NUM_REGS;
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p->hw.i2c.addr = TPS62362_I2C_ADDR;
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p->hw.i2c.tx_num = 1;
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p->bus = bus;
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return 0;
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}
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29
include/power/tps62362.h
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include/power/tps62362.h
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@ -0,0 +1,29 @@
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/*
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* (C) Copyright 2014 Texas Instruments Incorporated - http://www.ti.com
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* Author: Felipe Balbi <balbi@ti.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef __POWER_TPS62362_H__
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#define __POWER_TPS62362_H__
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/* I2C chip address */
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#define TPS62362_I2C_ADDR 0x60
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/* Registers */
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#define TPS62362_SET0 0x00
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#define TPS62362_SET1 0x01
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#define TPS62362_SET2 0x02
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#define TPS62362_SET3 0x03
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#define TPS62362_NUM_REGS 4
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#define TPS62362_DCDC_VOLT_SEL_0950MV 0x12
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#define TPS62362_DCDC_VOLT_SEL_1100MV 0x21
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#define TPS62362_DCDC_VOLT_SEL_1200MV 0x2b
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#define TPS62362_DCDC_VOLT_SEL_1260MV 0x31
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#define TPS62362_DCDC_VOLT_SEL_1330MV 0x38
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int tps62362_voltage_update(unsigned char reg, unsigned char volt_sel);
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int power_tps62362_init(unsigned char bus);
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#endif /* __POWER_TPS62362_H__ */
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