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Commit 5e2f01772a87ddd8592d5a53de85261b62faa7fb

Authored by Tim Harvey 2014-04-23 12:53:58 +0800

Committed by Stefano Babic 2014-05-09 20:38:23 +0800

Exists in v2017.01-smarct4x and in 43 other branches

power: Add support for LTC3676 PMIC

The LTC3676 PMIC includes four DC/DC converters, and three 300mA
LDO Regulators (two Adjustable). The DC/DC converters are adjustable based
on a resistor devider (board-specific).

This adds support for the LTC3676 by creating a namespace unique init function
that uses the PMIC API to allocate a pmic and defines the registers.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Acked-by: Stefano Babic <sbabic@denx.de>

Showing 3 changed files with 84 additions and 0 deletions Inline Diff

drivers/power/pmic/Makefile
drivers/power/pmic/pmic_ltc3676.c
include/power/ltc3676_pmic.h

drivers/power/pmic/Makefile

Diff comments View file @ 5e2f017

 #
 # Copyright (C) 2012 Samsung Electronics
 # Lukasz Majewski <l.majewski@samsung.com>
 #
 # SPDX-License-Identifier:	GPL-2.0+
 #
+obj-$(CONFIG_POWER_LTC3676) += pmic_ltc3676.o
 obj-$(CONFIG_POWER_MAX8998) += pmic_max8998.o
 obj-$(CONFIG_POWER_MAX8997) += pmic_max8997.o
 obj-$(CONFIG_POWER_MUIC_MAX8997) += muic_max8997.o
 obj-$(CONFIG_POWER_MAX77686) += pmic_max77686.o
 obj-$(CONFIG_POWER_PFUZE100) += pmic_pfuze100.o
 obj-$(CONFIG_POWER_TPS65217) += pmic_tps65217.o
 obj-$(CONFIG_POWER_TPS65910) += pmic_tps65910.o

drivers/power/pmic/pmic_ltc3676.c

Diff comments View file @ 5e2f017

File was created	1	/*
	2	* Copyright (C) 2014 Gateworks Corporation
	3	* Tim Harvey <tharvey@gateworks.com>
	4	*
	5	* SPDX-License-Identifier: GPL-2.0+
	6	*/
	7
	8	#include <common.h>
	9	#include <errno.h>
	10	#include <i2c.h>
	11	#include <power/pmic.h>
	12	#include <power/ltc3676_pmic.h>
	13
	14	int power_ltc3676_init(unsigned char bus)
	15	{
	16	static const char name[] = "LTC3676_PMIC";
	17	struct pmic *p = pmic_alloc();
	18
	19	if (!p) {
	20	printf("%s: POWER allocation error!\n", __func__);
	21	return -ENOMEM;
	22	}
	23
	24	p->name = name;
	25	p->interface = PMIC_I2C;
	26	p->number_of_regs = LTC3676_NUM_OF_REGS;
	27	p->hw.i2c.addr = CONFIG_POWER_LTC3676_I2C_ADDR;
	28	p->hw.i2c.tx_num = 1;
	29	p->bus = bus;
	30
	31	return 0;
	32	}
	33

include/power/ltc3676_pmic.h

Diff comments View file @ 5e2f017

File was created	1	/*
	2	* Copyright (C) 2014 Gateworks Corporation
	3	* Tim Harvey <tharvey@gateworks.com>
	4	*
	5	* SPDX-License-Identifier: GPL-2.0+
	6	*/
	7
	8	#ifndef __LTC3676_PMIC_H_
	9	#define __LTC3676_PMIC_H_
	10
	11	/* LTC3676 registers */
	12	enum {
	13	LTC3676_BUCK1 = 0x01,
	14	LTC3676_BUCK2 = 0x02,
	15	LTC3676_BUCK3 = 0x03,
	16	LTC3676_BUCK4 = 0x04,
	17	LTC3676_LDOA = 0x05,
	18	LTC3676_LDOB = 0x06,
	19	LTC3676_SQD1 = 0x07,
	20	LTC3676_SQD2 = 0x08,
	21	LTC3676_CNTRL = 0x09,
	22	LTC3676_DVB1A = 0x0A,
	23	LTC3676_DVB1B = 0x0B,
	24	LTC3676_DVB2A = 0x0C,
	25	LTC3676_DVB2B = 0x0D,
	26	LTC3676_DVB3A = 0x0E,
	27	LTC3676_DVB3B = 0x0F,
	28	LTC3676_DVB4A = 0x10,
	29	LTC3676_DVB4B = 0x11,
	30	LTC3676_MSKIRQ = 0x12,
	31	LTC3676_MSKPG = 0x13,
	32	LTC3676_USER = 0x14,
	33	LTC3676_HRST = 0x1E,
	34	LTC3676_CLIRQ = 0x1F,
	35	LTC3676_IRQSTAT = 0x15,
	36	LTC3676_PGSTATL = 0x16,
	37	LTC3676_PGSTATR = 0x17,
	38	LTC3676_NUM_OF_REGS = 0x20,
	39	};
	40
	41	/*
	42	* SW Configuration
	43	*/
	44
	45	#define LTC3676_DVB_MASK 0x1f
	46	#define LTC3676_PGOOD_MASK (1<<5)
	47	#define LTC3676_REF_SELA (0<<5)
	48	#define LTC3676_REF_SELB (1<<5)
	49
	50	int power_ltc3676_init(unsigned char bus);
	51	#endif
	52