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author | Jean-Jacques Hiblot <jjhiblot@ti.com> | 2019-09-18 16:57:29 +0200 |
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committer | Lee Jones <lee.jones@linaro.org> | 2019-10-04 15:38:01 +0100 |
commit | cc2f2e10c2056e570addc208560941daa9e06a25 (patch) | |
tree | 56456262ee81e11c296491b33adf6194c1022f82 /Documentation/devicetree/bindings/leds | |
parent | 0e0e78e32e723a1ee48207a2ad091afb30f6f1c5 (diff) | |
download | linux-cc2f2e10c2056e570addc208560941daa9e06a25.tar.bz2 |
dt-bindings: backlight: Add led-backlight binding
Add DT binding for led-backlight.
Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Diffstat (limited to 'Documentation/devicetree/bindings/leds')
-rw-r--r-- | Documentation/devicetree/bindings/leds/backlight/led-backlight.txt | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/leds/backlight/led-backlight.txt b/Documentation/devicetree/bindings/leds/backlight/led-backlight.txt new file mode 100644 index 000000000000..4c7dfbe7f67a --- /dev/null +++ b/Documentation/devicetree/bindings/leds/backlight/led-backlight.txt @@ -0,0 +1,28 @@ +led-backlight bindings + +This binding is used to describe a basic backlight device made of LEDs. +It can also be used to describe a backlight device controlled by the output of +a LED driver. + +Required properties: + - compatible: "led-backlight" + - leds: a list of LEDs + +Optional properties: + - brightness-levels: Array of distinct brightness levels. The levels must be + in the range accepted by the underlying LED devices. + This is used to translate a backlight brightness level + into a LED brightness level. If it is not provided, the + identity mapping is used. + + - default-brightness-level: The default brightness level. + +Example: + + backlight { + compatible = "led-backlight"; + + leds = <&led1>, <&led2>; + brightness-levels = <0 4 8 16 32 64 128 255>; + default-brightness-level = <6>; + }; |