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authorThierry Reding <treding@nvidia.com>2013-08-30 12:38:34 +0200
committerThierry Reding <thierry.reding@gmail.com>2013-10-16 09:20:09 +0200
commit22ceeee16eb8f0d04de3ef43a5174fb30ec18af9 (patch)
tree6c04eb3878e69ba47dbf33c76f0bad5cc8517fc1 /Documentation/devicetree/bindings/video/backlight/pwm-backlight.txt
parent8265b2e4e62632b01f998095d1bbda4d281629fe (diff)
downloadlinux-stericsson-22ceeee16eb8f0d04de3ef43a5174fb30ec18af9.tar.gz
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>
Diffstat (limited to 'Documentation/devicetree/bindings/video/backlight/pwm-backlight.txt')
-rw-r--r--Documentation/devicetree/bindings/video/backlight/pwm-backlight.txt2
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>;
};