Re: [PATCH v3 3/4] dt-bindings: backlight: Add led-backlight binding
From: Pavel Machek
Date: Wed Jul 10 2019 - 15:13:19 EST
On Wed 2019-07-10 14:39:31, Jean-Jacques Hiblot wrote:
> Add DT binding for led-backlight.
> Signed-off-by: Jean-Jacques Hiblot <jjhiblot@xxxxxx>
> .../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..0444eec8efe1
> --- /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
> +It can also be used to describe a backlight device controlled by the output of
> +a LED driver.
? The LED driver should better be driving some LEDs...
> +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 not provided, the
> + identity mapping is used.
"If it is not"
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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