On Tue, Sep 08, 2015 at 02:19:36PM +0300, Tomi Valkeinen wrote:
> Add DT binding for led-backlight.
>
> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@xxxxxx>
> ---
> .../bindings/video/backlight/led-backlight.txt | 30 ++++++++++++++++++++++
> 1 file changed, 30 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/video/backlight/led-backlight.txt
>
> diff --git a/Documentation/devicetree/bindings/video/backlight/led-backlight.txt b/Documentation/devicetree/bindings/video/backlight/led-backlight.txt
> new file mode 100644
> index 000000000000..fb77051ac230
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/video/backlight/led-backlight.txt
> @@ -0,0 +1,30 @@
> +led-backlight bindings
> +
> +Required properties:
> + - compatible: "led-backlight"
> + - leds: phandle to a led OF node [0]
> + - brightness-levels: Array of distinct LED brightness levels. These
> + are in the range from 0 to 255, passed to the LED class driver.
> + - default-brightness-level: the default brightness level (index into the
> + array defined by the "brightness-levels" property)
> + - power-supply: regulator for supply voltage
Hi Tomi
Maybe this regulator should be optional? I could imagine blacklights
without one, in none power sensitive cases, e.g. industrial PC with a
touch screen display, train ticket machine, etc.
Andrew
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