On Sun, Dec 20, 2015 at 12:13:20PM +0100, Uwe Kleine-König wrote:
> Some displays have a reset input and/or need a regulator to function
> properly. Allow to specify them for panel-dpi devices.
> 
> Signed-off-by: Uwe Kleine-König <u.kleine-koe...@pengutronix.de>
> ---
>  Documentation/devicetree/bindings/display/panel/panel-dpi.txt | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/display/panel/panel-dpi.txt 
> b/Documentation/devicetree/bindings/display/panel/panel-dpi.txt
> index 216c894d4f99..b52ac52757df 100644
> --- a/Documentation/devicetree/bindings/display/panel/panel-dpi.txt
> +++ b/Documentation/devicetree/bindings/display/panel/panel-dpi.txt
> @@ -7,6 +7,8 @@ Required properties:
>  Optional properties:
>  - label: a symbolic name for the panel
>  - enable-gpios: panel enable gpio
> +- reset-gpios: GPIO to control the RESET pin

The problem with this in a generic binding is what if the panel has 
ordering requirements like enable gpio has to be inactive when reset 
is deasserted?

> +- vcc-supply: phandle of regulator that will be used to enable power to the 
> display

What if there are 2 supplies?

While there are limits to what can be described here, I'm okay with 
allowing these, so:

Acked-by: Rob Herring <r...@kernel.org>

Rob
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