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

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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: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Eric Miao <eric.miao@marvell.com>
This commit is contained in:
Philipp Zabel 2009-05-28 07:15:18 +02:00 committed by Eric Miao
parent e6c3f4b89b
commit 6ea0414fc7
1 changed files with 41 additions and 0 deletions
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41
arch/arm/mach-pxa/hx4700.c
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@ -30,6 +30,7 @@
#include <linux/pwm_backlight.h> #include <linux/pwm_backlight.h>
#include <linux/regulator/bq24022.h> #include <linux/regulator/bq24022.h>
#include <linux/regulator/machine.h> #include <linux/regulator/machine.h>
#include <linux/regulator/max1586.h>
#include <linux/spi/ads7846.h> #include <linux/spi/ads7846.h>
#include <linux/spi/spi.h> #include <linux/spi/spi.h>
#include <linux/usb/gpio_vbus.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 * PCMCIA
*/ */
@ -828,6 +868,7 @@ static void __init hx4700_init(void)
pxa_set_ficp_info(&ficp_info); pxa_set_ficp_info(&ficp_info);
pxa27x_set_i2c_power_info(NULL); pxa27x_set_i2c_power_info(NULL);
pxa_set_i2c_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); pxa2xx_set_spi_info(2, &pxa_ssp2_master_info);
spi_register_board_info(ARRAY_AND_SIZE(tsc2046_board_info)); spi_register_board_info(ARRAY_AND_SIZE(tsc2046_board_info));