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| author | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2011-08-12 18:08:17 +0900 |
|---|---|---|
| committer | Kukjin Kim <kgene.kim@samsung.com> | 2011-09-17 11:27:50 +0900 |
| commit | 986afc98ce24901865828dab9ba876fd9be6beb2 (patch) | |
| tree | 900dbcf9a153e9b863df1a0e9d29fdfa0dfaaf29 /arch/arm/mach-s3c64xx | |
| parent | b6fd41e29dea9c6753b1843a77e50433e6123bcb (diff) | |
| download | talos-obmc-linux-986afc98ce24901865828dab9ba876fd9be6beb2.tar.gz talos-obmc-linux-986afc98ce24901865828dab9ba876fd9be6beb2.zip | |
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.c | 9 |
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 af0c2fe1ea37..5affb26a1985 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*/ |
