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@xxxxxxxxx>
> Reviewed-by: Rob Herring <robh@xxxxxxxxxx>
Reviewed-by: Sebastian Reichel <sebastian.reichel@xxxxxxxxxxxxx>
-- 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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