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Commit 9752e148 authored by Robert Jarzmik's avatar Robert Jarzmik Committed by Eric Miao
Browse files

[ARM] pxa/mioa701: add Maxim 1586 voltage regulator 



On this board, the PXA272 CPU voltage VCC_CORE is provided
by a Maxim 1586 voltage regulator. Use the regulator
framework to provide VCC_CORE control. When cpufreq will be
updated to ask for vcc_core, this will optimize power
drained by the board.

Signed-off-by: default avatarRobert Jarzmik <robert.jarzmik@free.fr>
Acked-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: default avatarEric Miao <eric.miao@marvell.com>
parent 6ea0414f

arch/arm/mach-pxa/mioa701.c

+41 −0
Original line number Diff line number Diff line
@@ -37,6 +37,7 @@ 
#include <linux/wm97xx_batt.h>

#include <linux/mtd/physmap.h>

#include <linux/usb/gpio_vbus.h>

#include <linux/regulator/max1586.h>



#include <asm/mach-types.h>

#include <asm/mach/arch.h>
@@ -716,6 +717,37 @@ static struct wm97xx_batt_info mioa701_battery_data = { 
	.batt_name	= "mioa701_battery",

};



/*

 * Voltage regulation

 */

static struct regulator_consumer_supply max1586_consumers[] = {

	{

		.supply = "vcc_core",

	}

};



static struct regulator_init_data max1586_v3_info = {

	.constraints = {

		.name = "vcc_core range",

		.min_uV = 1000000,

		.max_uV = 1705000,

		.always_on = 1,

		.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE,

	},

	.num_consumer_supplies = ARRAY_SIZE(max1586_consumers),

	.consumer_supplies = max1586_consumers,

};



static struct max1586_subdev_data max1586_subdevs[] = {

	{ .name = "vcc_core", .id = MAX1586_V3,

	  .platform_data = &max1586_v3_info },

};



static struct max1586_platform_data max1586_info = {

	.subdevs = max1586_subdevs,

	.num_subdevs = ARRAY_SIZE(max1586_subdevs),

};



/*

 * Camera interface

 */
@@ -725,6 +757,13 @@ struct pxacamera_platform_data mioa701_pxacamera_platform_data = { 
	.mclk_10khz = 5000,

};



static struct i2c_board_info __initdata mioa701_pi2c_devices[] = {

	{

		I2C_BOARD_INFO("max1586", 0x14),

		.platform_data = &max1586_info,

	},

};



static struct soc_camera_link iclink = {

	.bus_id	= 0, /* Must match id in pxa27x_device_camera in device.c */

};
@@ -825,7 +864,9 @@ static void __init mioa701_machine_init(void) 
	platform_add_devices(devices, ARRAY_SIZE(devices));

	gsm_init();



	i2c_register_board_info(1, ARRAY_AND_SIZE(mioa701_pi2c_devices));

	pxa_set_i2c_info(&i2c_pdata);

	pxa27x_set_i2c_power_info(NULL);

	pxa_set_camera_info(&mioa701_pxacamera_platform_data);

	i2c_register_board_info(0, ARRAY_AND_SIZE(mioa701_i2c_devices));

}