Re: [PATCH 1/2] dt-bindings: display/panel: Add AUO A030JTN01

[Sam Ravnborg <sam@ravnborg.org>]

Hi PAul,

On Sat, Aug 28, 2021 at 12:26:39PM +0100, Paul Cercueil wrote:
> Add binding for the AUO A030JTN01 panel, which is a 320x480 3.0" 4:3
> 24-bit TFT LCD panel with non-square pixels and a delta-RGB 8-bit
> interface.
> 
> Signed-off-by: Paul Cercueil <paul@crapouillou.net>
> ---
>  .../bindings/display/panel/auo,a030jtn01.yaml | 57 +++++++++++++++++++
>  1 file changed, 57 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/display/panel/auo,a030jtn01.yaml
> 
> diff --git a/Documentation/devicetree/bindings/display/panel/auo,a030jtn01.yaml b/Documentation/devicetree/bindings/display/panel/auo,a030jtn01.yaml
> new file mode 100644
> index 000000000000..21c9d62e3625
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/panel/auo,a030jtn01.yaml
> @@ -0,0 +1,57 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/display/panel/auo,a030jtn01.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: AUO A030JTN01 3.0" (320x480 pixels) 24-bit TFT LCD
> +
> +description: |
> +  The panel must obey the rules for a SPI slave device as specified in
> +  spi/spi-controller.yaml
> +
> +maintainers:
> +  - Paul Cercueil <paul@crapouillou.net>
> +
> +allOf:
> +  - $ref: panel-common.yaml#
> +
> +properties:
> +  compatible:
> +    const: auo,a030jtn01
> +
> +  backlight: true
> +  port: true
> +  power-supply: true
> +  reg: true
> +  reset-gpios: true
> +
> +required:
> +  - compatible
> +  - reg
> +  - power-supply
> +  - reset-gpios
> +
> +unevaluatedProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/gpio/gpio.h>

As this is a spi slave, then it is supposed to be a node below a spi
node.
Other bindings add:
    spi {
        #address-cells = <1>;
        #size-cells = <0>;
        ...
    }

to make this obvious.

> +
> +    panel@0 {
> +      compatible = "auo,a030jtn01";
> +      reg = <0>;
> +
> +      spi-max-frequency = <10000000>;
> +
> +      reset-gpios = <&gpe 4 GPIO_ACTIVE_LOW>;
> +      power-supply = <&lcd_power>;
> +
> +      backlight = <&backlight>;
> +
> +      port {
> +        panel_input: endpoint {
> +          remote-endpoint = <&panel_output>;
> +        };
> +      };
> +    };

My personal preference is indent with 4 spaces in the example - but
there is no hard rules so 2 spaces is also fine.

With or without my nits above:
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>


	Sam