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Subject[PATCH 3/3] pxa/hx4700: add Maxim 1587A voltage regulator
Date
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>
---
arch/arm/mach-pxa/hx4700.c | 41 +++++++++++++++++++++++++++++++++++++++++
1 files changed, 41 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-pxa/hx4700.c b/arch/arm/mach-pxa/hx4700.c
index 0f65680..5bc1e2b 100644
--- a/arch/arm/mach-pxa/hx4700.c
+++ b/arch/arm/mach-pxa/hx4700.c
@@ -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>
@@ -775,6 +776,45 @@ 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));

--
1.6.3.1


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