From: H. Nikolaus Schaller Date: Mon, 5 Sep 2016 09:16:38 +0000 (+0200) Subject: ARM: dts: omap3-gta04: reduce panel backlight PWM frequency to 83Hz X-Git-Tag: v4.14-rc1~2323^2~4^2~1 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=3868b42f367d7a8d4246db03388fddc1d4db428f;p=platform%2Fkernel%2Flinux-rpi.git ARM: dts: omap3-gta04: reduce panel backlight PWM frequency to 83Hz This helps to get 100% intensity closer to "always on". It compensates for an effect of dmtimer which at 100% still emits short "off" impulses and the startup-time of the DC/DC converter makes backlight intensity not reach full scale. The lower the PWM frequency is, the smaller is this effect. Signed-off-by: H. Nikolaus Schaller Signed-off-by: Tony Lindgren --- diff --git a/arch/arm/boot/dts/omap3-gta04.dtsi b/arch/arm/boot/dts/omap3-gta04.dtsi index 5563e2533ebd..b3a8b1f24499 100644 --- a/arch/arm/boot/dts/omap3-gta04.dtsi +++ b/arch/arm/boot/dts/omap3-gta04.dtsi @@ -102,7 +102,7 @@ backlight { compatible = "pwm-backlight"; - pwms = <&pwm11 0 2000000 0>; + pwms = <&pwm11 0 12000000 0>; pwm-names = "backlight"; brightness-levels = <0 11 20 30 40 50 60 70 80 90 100>; default-brightness-level = <9>; /* => 90 */