After the "PWM backlight interpolation adjustments" patches, the backlight interpolation works a little differently. The way these dts files were working before was relying on a bug (IMHO).
Remove the 0-3 range since otherwise we would have a 252 long interpolation that would slowly go between 0 and 3, looking really bad in userspace. We don't need the 0% point, userspace seems to handle this just fine because it uses the bl_power property to turn off the display. Signed-off-by: Alexandru Stan <ams...@chromium.org> --- arch/arm/boot/dts/rk3288-veyron-jaq.dts | 2 +- arch/arm/boot/dts/rk3288-veyron-minnie.dts | 2 +- arch/arm/boot/dts/rk3288-veyron-tiger.dts | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/arm/boot/dts/rk3288-veyron-jaq.dts b/arch/arm/boot/dts/rk3288-veyron-jaq.dts index af77ab20586d..4a148cf1defc 100644 --- a/arch/arm/boot/dts/rk3288-veyron-jaq.dts +++ b/arch/arm/boot/dts/rk3288-veyron-jaq.dts @@ -20,7 +20,7 @@ / { &backlight { /* Jaq panel PWM must be >= 3%, so start non-zero brightness at 8 */ - brightness-levels = <0 8 255>; + brightness-levels = <8 255>; num-interpolated-steps = <247>; }; diff --git a/arch/arm/boot/dts/rk3288-veyron-minnie.dts b/arch/arm/boot/dts/rk3288-veyron-minnie.dts index f8b69e0a16a0..82fc6fba9999 100644 --- a/arch/arm/boot/dts/rk3288-veyron-minnie.dts +++ b/arch/arm/boot/dts/rk3288-veyron-minnie.dts @@ -39,7 +39,7 @@ volum_up { &backlight { /* Minnie panel PWM must be >= 1%, so start non-zero brightness at 3 */ - brightness-levels = <0 3 255>; + brightness-levels = <3 255>; num-interpolated-steps = <252>; }; diff --git a/arch/arm/boot/dts/rk3288-veyron-tiger.dts b/arch/arm/boot/dts/rk3288-veyron-tiger.dts index 069f0c2c1fdf..52a84cbe7a90 100644 --- a/arch/arm/boot/dts/rk3288-veyron-tiger.dts +++ b/arch/arm/boot/dts/rk3288-veyron-tiger.dts @@ -23,7 +23,7 @@ / { &backlight { /* Tiger panel PWM must be >= 1%, so start non-zero brightness at 3 */ - brightness-levels = <0 3 255>; + brightness-levels = <3 255>; num-interpolated-steps = <252>; }; -- 2.28.0