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Date:   Tue, 10 Sep 2019 12:26:41 +0100
From:   Daniel Thompson <daniel.thompson@linaro.org>
To:     Jean-Jacques Hiblot <jjhiblot@ti.com>
Cc:     jacek.anaszewski@gmail.com, pavel@ucw.cz, robh+dt@kernel.org,
        mark.rutland@arm.com, lee.jones@linaro.org, dmurphy@ti.com,
        linux-leds@vger.kernel.org, linux-kernel@vger.kernel.org,
        dridevel@lists.freedesktop.org, tomi.valkeinen@ti.com
Subject: Re: [PATCH v5 3/4] dt-bindings: backlight: Add led-backlight binding
Message-ID: <20190910112641.q4qpvhh6u6nqqw5z@holly.lan>
References: <20190910105946.23057-1-jjhiblot@ti.com>
 <20190910105946.23057-4-jjhiblot@ti.com>
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On Tue, Sep 10, 2019 at 12:59:45PM +0200, Jean-Jacques Hiblot wrote:
> Add DT binding for led-backlight.
> 
> Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>

Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>

> ---
>  .../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>;
> +	};
> -- 
> 2.17.1
>