From 225c59b9235a421cdb219be5fbc13126a49714a6 Mon Sep 17 00:00:00 2001 From: Alexandru Stan Date: Wed, 21 Oct 2020 22:04:43 -0700 Subject: ARM: dts: rockchip: Remove 0 point from brightness-levels on rk3288-veyron The extra 0 only adds one point in the userspace visible range, so this change is almost a noop with the current driver behavior. 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. Furthermore after adding "backlight: pwm_bl: Fix interpolation" patch, the backlight interpolation will work a little differently. So we need to preemptively remove the 0-3 segment since otherwise we would have a 252 long interpolation that would slowly go between 0 and 3, looking really bad in userspace. So it's almost a noop/cleanup now, but it will be required in the future. Signed-off-by: Alexandru Stan Reviewed-by: Douglas Anderson Acked-by: Daniel Thompson Link: https://lore.kernel.org/r/20201021220404.v3.1.I96b8d872ec51171f19274e43e96cadc092881271@changeid Signed-off-by: Heiko Stuebner --- 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 @@ &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>; }; -- cgit