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authorMark Brown <broonie@opensource.wolfsonmicro.com>2011-08-12 18:08:17 +0900
committerKukjin Kim <kgene.kim@samsung.com>2011-09-17 11:27:50 +0900
commit986afc98ce24901865828dab9ba876fd9be6beb2 (patch)
tree900dbcf9a153e9b863df1a0e9d29fdfa0dfaaf29 /arch/arm/mach-s3c64xx
parentb6fd41e29dea9c6753b1843a77e50433e6123bcb (diff)
downloadop-kernel-dev-986afc98ce24901865828dab9ba876fd9be6beb2.zip
op-kernel-dev-986afc98ce24901865828dab9ba876fd9be6beb2.tar.gz
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>
Diffstat (limited to 'arch/arm/mach-s3c64xx')
-rw-r--r--arch/arm/mach-s3c64xx/mach-crag6410.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/arm/mach-s3c64xx/mach-crag6410.c b/arch/arm/mach-s3c64xx/mach-crag6410.c
index af0c2fe..5affb26 100644
--- a/arch/arm/mach-s3c64xx/mach-crag6410.c
+++ b/arch/arm/mach-s3c64xx/mach-crag6410.c
@@ -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*/
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