| Message ID | 20190717141514.21171-4-jjhiblot@ti.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Add a generic driver for LED-based backlight | expand |
Cc devicetree@vger.kernel.org list - Rob once informed us this gets higher priority in his queue this way. On 7/17/19 4:15 PM, Jean-Jacques Hiblot wrote: > Add DT binding for led-backlight. > > Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com> > --- > .../bindings/leds/backlight/led-backlight.txt | 28 +++++++++++++++++++ > 1 file changed, 28 insertions(+) > create mode 100644 Documentation/devicetree/bindings/leds/backlight/led-backlight.txt > > 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>; > + }; >
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>; + };
Add DT binding for led-backlight. Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com> --- .../bindings/leds/backlight/led-backlight.txt | 28 +++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 Documentation/devicetree/bindings/leds/backlight/led-backlight.txt