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Commit 6ea0414f authored by Philipp Zabel's avatar Philipp Zabel Committed by Eric Miao
Browse files

[ARM] pxa/hx4700: add Maxim 1587A voltage regulator 



On this board, the PXA270 CPU voltage VCC_CORE is provided
by a Maxim 1587A voltage regulator configured to provide
1.55 V maximum voltage for 624 MHz operation.

Signed-off-by: default avatarPhilipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: default avatarEric Miao <eric.miao@marvell.com>
parent e6c3f4b8

arch/arm/mach-pxa/hx4700.c

+41 −0
Original line number Diff line number Diff line
@@ -30,6 +30,7 @@ 
#include <linux/pwm_backlight.h>

#include <linux/regulator/bq24022.h>

#include <linux/regulator/machine.h>

#include <linux/regulator/max1586.h>

#include <linux/spi/ads7846.h>

#include <linux/spi/spi.h>

#include <linux/usb/gpio_vbus.h>
@@ -774,6 +775,45 @@ static struct platform_device strataflash = { 
	},

};



/*

 * Maxim MAX1587A on PI2C

 */



static struct regulator_consumer_supply max1587a_consumer = {

	.supply = "vcc_core",

};



static struct regulator_init_data max1587a_v3_info = {

	.constraints = {

		.name = "vcc_core range",

		.min_uV =  900000,

		.max_uV = 1705000,

		.always_on = 1,

		.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE,

	},

	.num_consumer_supplies = 1,

	.consumer_supplies     = &max1587a_consumer,

};



static struct max1586_subdev_data max1587a_subdev = {

	.name = "vcc_core",

	.id   = MAX1586_V3,

	.platform_data = &max1587a_v3_info,

};



static struct max1586_platform_data max1587a_info = {

	.num_subdevs = 1,

	.subdevs     = &max1587a_subdev,

	.v3_gain     = MAX1586_GAIN_R24_3k32, /* 730..1550 mV */

};



static struct i2c_board_info __initdata pi2c_board_info[] = {

	{

		I2C_BOARD_INFO("max1586", 0x14),

		.platform_data = &max1587a_info,

	},

};



/*

 * PCMCIA

 */
@@ -828,6 +868,7 @@ static void __init hx4700_init(void) 
	pxa_set_ficp_info(&ficp_info);

	pxa27x_set_i2c_power_info(NULL);

	pxa_set_i2c_info(NULL);

	i2c_register_board_info(1, ARRAY_AND_SIZE(pi2c_board_info));

	pxa2xx_set_spi_info(2, &pxa_ssp2_master_info);

	spi_register_board_info(ARRAY_AND_SIZE(tsc2046_board_info));