[Letux-kernel] [PATCH] pyra: Fix flickering keyboard backlight

[David Shah]

Increase PWM frequency to 8300Hz as LM3699 datasheet recommends a
frequency between 2kHz and 100kHz.

Signed-off-by: David Shah <dave at ds0.me>
---
 arch/arm/boot/dts/pyra-mainboard-common.dtsi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/pyra-mainboard-common.dtsi b/arch/arm/boot/dts/pyra-mainboard-common.dtsi
index 67aca9b084de..91691c4f25de 100644
--- a/arch/arm/boot/dts/pyra-mainboard-common.dtsi
+++ b/arch/arm/boot/dts/pyra-mainboard-common.dtsi
@@ -88,7 +88,7 @@ modem_en: modem {
 
 	keyboard-backlight {
 		compatible = "pwm-backlight";
-		pwms = <&pwm8 0 12000000 0>;
+		pwms = <&pwm8 0 120000 0>; // 8300Hz
 		pwm-names = "keyboard";
 		brightness-levels = <0 1 2 5 10 20 40 60 100>;
 		default-brightness-level = <5>;	/* 20% */
-- 
2.27.0