Commit ff5eff35 authored by Petr Cvek's avatar Petr Cvek Committed by Robert Jarzmik
Browse files

ARM: pxa: magician: Add support for MAX1587A Vcore regulator 



HTC Magician contains a MAX1587A voltage regulator for a Vcore supply.
The Vcore regulation is required for a CPU speed switching. This patch adds
declaration for the max1586 driver.

Notice:

- MAX1587A version does not support the V6 (USIM) output.
- A boost resistor was directly measured for a board_id 0x3a.

Signed-off-by: default avatarPetr Cvek <petr.cvek@tul.cz>
Signed-off-by: default avatarRobert Jarzmik <robert.jarzmik@free.fr>
parent f36150b1

arch/arm/mach-pxa/magician.c

+52 −0
Original line number Diff line number Diff line
@@ -45,6 +45,8 @@ 
#include <linux/platform_data/irda-pxaficp.h>

#include <linux/platform_data/usb-ohci-pxa27x.h>



#include <linux/regulator/max1586.h>



#include "devices.h"

#include "generic.h"
@@ -696,6 +698,52 @@ static struct platform_device bq24022 = { 
	},

};



/*

 * Vcore regulator MAX1587A

 */



static struct regulator_consumer_supply magician_max1587a_consumers[] = {

	REGULATOR_SUPPLY("vcc_core", NULL),

};



static struct regulator_init_data magician_max1587a_v3_info = {

	.constraints = {

		.name		= "vcc_core range",

		.min_uV		= 700000,

		.max_uV		= 1475000,

		.always_on	= 1,

		.valid_ops_mask	= REGULATOR_CHANGE_VOLTAGE,

	},

	.consumer_supplies	= magician_max1587a_consumers,

	.num_consumer_supplies	= ARRAY_SIZE(magician_max1587a_consumers),

};



static struct max1586_subdev_data magician_max1587a_subdevs[] = {

	{

		.name		= "vcc_core",

		.id		= MAX1586_V3,

		.platform_data	= &magician_max1587a_v3_info,

	}

};



static struct max1586_platform_data magician_max1587a_info = {

	.subdevs     = magician_max1587a_subdevs,

	.num_subdevs = ARRAY_SIZE(magician_max1587a_subdevs),

	/*

	 * NOTICE measured directly on the PCB (board_id == 0x3a), but

	 * if R24 is present, it will boost the voltage

	 * (write 1.475V, get 1.645V and smoke)

	 */

	.v3_gain     = MAX1586_GAIN_NO_R24,

};



static struct i2c_board_info magician_pwr_i2c_board_info[] __initdata = {

	{

		I2C_BOARD_INFO("max1586", 0x14),

		.platform_data	= &magician_max1587a_info,

	},

};



/*

 * MMC/SD

 */
@@ -872,6 +920,10 @@ static void __init magician_init(void) 
	pxa_set_ficp_info(&magician_ficp_info);

	pxa27x_set_i2c_power_info(&magician_i2c_power_info);

	pxa_set_i2c_info(&i2c_info);



	i2c_register_board_info(1,

		ARRAY_AND_SIZE(magician_pwr_i2c_board_info));



	pxa_set_mci_info(&magician_mci_info);

	pxa_set_ohci_info(&magician_ohci_info);

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