[RFC PATCH 2/2] dt-bindings: panel: Add Ilitek ILI9341 panel documentation

[Rob Herring]

On Mon, Mar 04, 2019 at 01:50:33PM +0100, Josef Lusticky wrote:
> ---

You need a commit message and a Signed-off-by. Run checkpatch.pl, it 
will tell you these things.

>  .../bindings/display/panel/ilitek,ili9341.txt | 33 +++++++++++++++++++
>  1 file changed, 33 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/display/panel/ilitek,ili9341.txt
> 
> diff --git a/Documentation/devicetree/bindings/display/panel/ilitek,ili9341.txt b/Documentation/devicetree/bindings/display/panel/ilitek,ili9341.txt
> new file mode 100644
> index 000000000000..4e0e483bc12e
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/panel/ilitek,ili9341.txt

I don't like the same h/w being documented in 2 places as we already 
have bindings/display/ilitek,ili9341.txt. Expand that to cover both 
modes. 

> @@ -0,0 +1,33 @@
> +Ilitek ILI9341 TFT panel driver with SPI control bus
> +
> +This is a driver for 240x320 TFT panels with parallel RGB color input.
> +
> +Required properties:
> +  - compatible: "displaytech,dt024ctft", "ilitek,ili9341"
> +  - backlight: phandle of the backlight device attached to the panel
> +
> +Optional properties:
> +  - dc-gpios: a GPIO spec for the Data/Command pin, see gpio/gpio.txt

How is this optional? Looks pretty important from reading the driver.

> +  - reset-gpios: a GPIO spec for the reset pin, see gpio/gpio.txt
> +
> +The panel must obey the rules for a SPI slave device as specified in
> +spi/spi-bus.txt
> +
> +The device node can contain one 'port' child node with one child
> +'endpoint' node, according to the bindings defined in
> +media/video-interfaces.txt. This node should describe panel's video bus.
> +
> +Example:
> +
> +panel at 0 {
> +	compatible = "displaytech,dt024ctft", "ilitek,ili9341";
> +	reg = <0>;
> +	backlight = <&backlight>;
> +	dc-gpios = <&pio 4 9 GPIO_ACTIVE_HIGH>;
> +
> +	port {
> +		panel_in: endpoint {
> +			remote-endpoint = <&display_out>;
> +		};
> +	};
> +};
> -- 
> 2.20.1
>