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authorJingoo Han <jg1.han@samsung.com>2011-12-08 10:08:38 +0900
committerKukjin Kim <kgene.kim@samsung.com>2011-12-08 10:09:30 +0900
commitde611dd4078499d5aa5ae9655652687ae630585f (patch)
treefd6ec207822f224b81662fedf4baf9eb8cca3ff6 /arch
parentd7a4c45ec24b6c6773ff302c3c9cb5ed46c8e211 (diff)
ARM: S5PV210: Set 1000ns as PWM backlight period on SMDKV210
The SMDK board uses LT3591 as backlight LED driver of LTE480WV LCD. According to the LT3591 datasheet, the switching frequency should be 1MHz. So, PWM period is calculated by following formula: PWM period = 1/switching frequency = 1/1MHz = 1000ns Thus, the PWM backlight period should be 1000ns. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/mach-s5pv210/mach-smdkv210.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm/mach-s5pv210/mach-smdkv210.c b/arch/arm/mach-s5pv210/mach-smdkv210.c
index a9106c39239..8662ef6e568 100644
--- a/arch/arm/mach-s5pv210/mach-smdkv210.c
+++ b/arch/arm/mach-s5pv210/mach-smdkv210.c
@@ -273,6 +273,7 @@ static struct samsung_bl_gpio_info smdkv210_bl_gpio_info = {
static struct platform_pwm_backlight_data smdkv210_bl_data = {
.pwm_id = 3,
+ .pwm_period_ns = 1000,
};
static void __init smdkv210_map_io(void)