Re: [PATCH 1/2] dt-bindings: display: panel: Add WL-355608-A8 panel

[Conor Dooley <conor@kernel.org>]

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On Fri, May 24, 2024 at 10:33:13PM +1200, Ryan Walklin wrote:
> The WL-355608-A8 is a 3.5" 640x480@60Hz RGB LCD display from an unknown
> OEM, used in a number of handheld gaming devices made by Anbernic.
> 
> Add a device tree binding for the panel.
> 
> Signed-off-by: Ryan Walklin <ryan@testtoast.com>
> ---
>  .../bindings/display/panel/wl-355608-a8.yaml  | 68 +++++++++++++++++++
>  1 file changed, 68 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/display/panel/wl-355608-a8.yaml
> 
> diff --git a/Documentation/devicetree/bindings/display/panel/wl-355608-a8.yaml b/Documentation/devicetree/bindings/display/panel/wl-355608-a8.yaml
> new file mode 100644
> index 000000000..af12303e2
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/panel/wl-355608-a8.yaml
> @@ -0,0 +1,68 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/display/panel/wl-355608-a8.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: WL-355608-A8 3.5" (640x480 pixels) 24-bit IPS LCD panel
> +
> +maintainers:
> +  - Ryan Walklin <ryan@testtoast.com>
> +
> +allOf:
> +  - $ref: panel-common.yaml#
> +  - $ref: /schemas/spi/spi-peripheral-props.yaml#
> +
> +properties:
> +  compatible:
> +    const: wl-355608-a8

You're missing a vendor prefix here. And when you add it, update the
filename to match.

> +
> +  reg:
> +    maxItems: 1
> +
> +  spi-3wire: true
> +
> +required:
> +  - compatible
> +  - reg
> +  - port
> +  - power-supply
> +  - reset-gpios
> +
> +unevaluatedProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/gpio/gpio.h>
> +

> +    spi_lcd: spi {
> +        compatible = "spi-gpio";
> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +
> +        sck-gpios = <&pio 8 9 GPIO_ACTIVE_HIGH>; // PI9
> +        mosi-gpios = <&pio 8 10 GPIO_ACTIVE_HIGH>; // PI10
> +        cs-gpios = <&pio 8 8 GPIO_ACTIVE_HIGH>; // PI8
> +        num-chipselects = <1>;

All of this is not needed in the example, all you need to have here is:

spi {
    #address-cells = <1>;
    #size-cells = <0>;

> +
> +        panel: panel@0 {

This "panel" label is not used, you should drop it.

> +            compatible = "wl_355608_a8";

This doesn't match what you documented, be sure to run dt_binding_check.

> +            reg = <0>;
> +
> +            spi-3wire;
> +            spi-max-frequency = <3125000>;
> +
> +            reset-gpios = <&pio 8 14 GPIO_ACTIVE_LOW>; // PI14
> +
> +            backlight = <&backlight>;
> +            power-supply = <&reg_lcd>;
> +            pinctrl-0 = <&lcd0_rgb888_pins>;
> +            pinctrl-names = "default";
> +
> +            port {
> +            	panel_in_rgb: endpoint {

Neither is this label afaict.

Thanks,
Conor.

> +                    remote-endpoint = <&tcon_lcd0_out_lcd>;
> +                };
> +            };
> +        };
> +    };
> -- 
> 2.45.1
> 

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