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ARM: S3C64XX: Hook up GPIO initiated DVS on Cragganmore 

Allow us to ramp VDDARM quickly by using a GPIO to signal a voltage change
instead of doing a register write.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
This commit is contained in:
Mark Brown 2011-08-12 18:08:17 +09:00 committed by Kukjin Kim
parent b6fd41e29d
commit 986afc98ce
1 changed files with 9 additions and 0 deletions
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9
arch/arm/mach-s3c64xx/mach-crag6410.c
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@ -353,6 +353,12 @@ static struct pca953x_platform_data crag6410_pca_data = {
.irq_base = 0,
};
/* VDDARM is controlled by DVS1 connected to GPK(0) */
static struct wm831x_buckv_pdata vddarm_pdata = {
.dvs_control_src = 1,
.dvs_gpio = S3C64XX_GPK(0),
};
static struct regulator_consumer_supply vddarm_consumers[] __initdata = {
REGULATOR_SUPPLY("vddarm", NULL),
};
@ -368,6 +374,7 @@ static struct regulator_init_data vddarm __initdata = {
.num_consumer_supplies = ARRAY_SIZE(vddarm_consumers),
.consumer_supplies = vddarm_consumers,
.supply_regulator = "WALLVDD",
.driver_data = &vddarm_pdata,
};
static struct regulator_init_data vddint __initdata = {
@ -503,6 +510,8 @@ static struct wm831x_pdata crag_pmic_pdata __initdata = {
.backup = &banff_backup_pdata,
.gpio_defaults = {
/* GPIO5: DVS1_REQ - CMOS, DBVDD, active high */
[4] = WM831X_GPN_DIR | WM831X_GPN_POL | WM831X_GPN_ENA | 0x8,
/* GPIO11: Touchscreen data - CMOS, DBVDD, active high*/
[10] = WM831X_GPN_POL | WM831X_GPN_ENA | 0x6,
/* GPIO12: Touchscreen pen down - CMOS, DBVDD, active high*/