From 1ec68509065f83c0e02732715cabf5876bc14aa5 Mon Sep 17 00:00:00 2001 From: Ondrej Jirman Date: Tue, 30 Jan 2024 16:41:58 +0100 Subject: [PATCH 432/480] arm64: dts: rk3566-pientab2: Use non-linear brightness->PWM duty cycle curve This helps with dumb use of sysfs to control backlight brightness. Signed-off-by: Ondrej Jirman --- arch/arm64/boot/dts/rockchip/rk3566-pinetab2.dtsi | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/arch/arm64/boot/dts/rockchip/rk3566-pinetab2.dtsi b/arch/arm64/boot/dts/rockchip/rk3566-pinetab2.dtsi index 26cf765a7297..75918f797c9e 100644 --- a/arch/arm64/boot/dts/rockchip/rk3566-pinetab2.dtsi +++ b/arch/arm64/boot/dts/rockchip/rk3566-pinetab2.dtsi @@ -44,9 +44,14 @@ backlight: backlight { compatible = "pwm-backlight"; pwms = <&pwm4 0 25000 0>; - brightness-levels = <20 220>; - num-interpolated-steps = <200>; - default-brightness-level = <100>; + brightness-levels = + <0 250 360 470 580 690 810 949 1110 1294 1502 + 1737 1998 2289 2610 2964 3351 3774 4233 4731 + 5268 5847 6467 7133 7845 8604 9412 10271 11182 + 12146 13164 14239 15374 16568 17822 19140 20521 + 21969 23483 25068 26722 28447 30247 32121 34071 + 36099 38210 40400 42669 45026 47468 50000>; + default-brightness-level = <17>; power-supply = <&vcc_sys>; }; -- 2.49.0