From 6ea0414fc748ab5b1d83a414c7ee3a60190363aa Mon Sep 17 00:00:00 2001 From: Philipp Zabel Date: Thu, 28 May 2009 07:15:18 +0200 Subject: [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: Philipp Zabel Signed-off-by: Eric Miao --- arch/arm/mach-pxa/hx4700.c | 41 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) (limited to 'arch/arm/mach-pxa/hx4700.c') diff --git a/arch/arm/mach-pxa/hx4700.c b/arch/arm/mach-pxa/hx4700.c index 7fff467e84fc..81359d574f88 100644 --- a/arch/arm/mach-pxa/hx4700.c +++ b/arch/arm/mach-pxa/hx4700.c @@ -30,6 +30,7 @@ #include #include #include +#include #include #include #include @@ -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)); -- cgit v1.2.2