diff options
| author | Thierry Reding <treding@nvidia.com> | 2013-08-30 12:38:34 +0200 |
|---|---|---|
| committer | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2018-03-28 18:39:56 +0200 |
| commit | 8ae5908bcb59f322456a000d97db397fe839dfe4 (patch) | |
| tree | 9d1a18cbc314bd09aa16cf0aa6208e8d88a86d29 /Documentation | |
| parent | 8431712fa81721de1e675d98f19d2de9ddc96195 (diff) | |
pwm-backlight: Add power supply support
Backlights require a power supply to work properly. This commit adds a
regulator to power up and power down the backlight.
Signed-off-by: Thierry Reding <treding@nvidia.com>
(cherry picked from commit 22ceeee16eb8f0d04de3ef43a5174fb30ec18af9)
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/video/backlight/pwm-backlight.txt | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/video/backlight/pwm-backlight.txt b/Documentation/devicetree/bindings/video/backlight/pwm-backlight.txt index 72810cc2dbc1..764db86d441a 100644 --- a/Documentation/devicetree/bindings/video/backlight/pwm-backlight.txt +++ b/Documentation/devicetree/bindings/video/backlight/pwm-backlight.txt @@ -10,6 +10,7 @@ Required properties: last value in the array represents a 100% duty cycle (brightest). - default-brightness-level: the default brightness level (index into the array defined by the "brightness-levels" property) + - power-supply: regulator for supply voltage Optional properties: - pwm-names: a list of names for the PWM devices specified in the @@ -29,5 +30,6 @@ Example: brightness-levels = <0 4 8 16 32 64 128 255>; default-brightness-level = <6>; + power-supply = <&vdd_bl_reg>; enable-gpios = <&gpio 58 0>; }; |