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| author |   Alexandru Stan <amstan@chromium.org> | 2020-10-21 22:04:43 -0700 |
|---|---|---|
| committer |   Heiko Stuebner <heiko@sntech.de> | 2020-11-01 12:35:52 +0100 |
| commit | 225c59b9235a421cdb219be5fbc13126a49714a6 (patch) | |
| tree | c5c4674a4f5ac22318ec95d448ae8020dcafa57a /arch/arm/boot/dts/rk3288-veyron-minnie.dts | |
| parent | Linux 5.10-rc1 (diff) | |
| download | linux-dev-225c59b9235a421cdb219be5fbc13126a49714a6.tar.xz linux-dev-225c59b9235a421cdb219be5fbc13126a49714a6.zip | |
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 <amstan@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Acked-by: Daniel Thompson <daniel.thompson@linaro.org>
Link: https://lore.kernel.org/r/20201021220404.v3.1.I96b8d872ec51171f19274e43e96cadc092881271@changeid
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Diffstat (limited to 'arch/arm/boot/dts/rk3288-veyron-minnie.dts')
| -rw-r--r-- | arch/arm/boot/dts/rk3288-veyron-minnie.dts | 2 |
1 files changed, 1 insertions, 1 deletions
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>; }; |