Hi,

On Fri, Dec 14, 2018 at 04:12:14PM +0100, Paweł Chmiel wrote:
> Document new optional voltage regulators, which can be used
> to power down/up touchscreen.
> 
> Signed-off-by: Paweł Chmiel <pawel.mikolaj.chmiel@gmail.com>
> Reviewed-by: Rob Herring <robh@kernel.org>

Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.com>

-- Sebastian

> ---
> Changes from v1:
>   - Added reviewed-by
> ---
>  .../devicetree/bindings/input/atmel,maxtouch.txt          | 8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/input/atmel,maxtouch.txt b/Documentation/devicetree/bindings/input/atmel,maxtouch.txt
> index c88919480d37..17930ecadad3 100644
> --- a/Documentation/devicetree/bindings/input/atmel,maxtouch.txt
> +++ b/Documentation/devicetree/bindings/input/atmel,maxtouch.txt
> @@ -31,6 +31,12 @@ Optional properties for main touchpad device:
>  
>  - reset-gpios: GPIO specifier for the touchscreen's reset pin (active low)
>  
> +- avdd-supply: Analog power supply. It powers up the analog channel block
> +    of the controller to detect the touches.
> +
> +- vdd-supply: Digital power supply. It powers up the digital block
> +    of the controller to enable i2c communication.
> +
>  Example:
>  
>  	touch@4b {
> @@ -38,4 +44,6 @@ Example:
>  		reg = <0x4b>;
>  		interrupt-parent = <&gpio>;
>  		interrupts = <TEGRA_GPIO(W, 3) IRQ_TYPE_LEVEL_LOW>;
> +		avdd-supply = <&atsp_reg>;
> +		vdd-supply = <&tsp_reg>;
>  	};
> -- 
> 2.17.1
> 
> 
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