Re: [PATCH v2 2/3] dt-bindings: display: panel: Add binding document for Elida KD35T133

[Sam Ravnborg <sam@ravnborg.org>]

Hi Heiko.

On Tue, Feb 25, 2020 at 10:39:12AM +0100, Heiko Stuebner wrote:
> From: Heiko Stuebner <heiko.stuebner@theobroma-systems.com>
> 
> The KD35T133 is a 3.5" 320x480 DSI display used in the RK3326-based
> Odroid Go Advance handheld device.
> 
> Signed-off-by: Heiko Stuebner <heiko.stuebner@theobroma-systems.com>

One small comment, but anyway:

Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
> ---
>  .../display/panel/elida,kd35t133.yaml         | 49 +++++++++++++++++++
>  1 file changed, 49 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/display/panel/elida,kd35t133.yaml
> 
> diff --git a/Documentation/devicetree/bindings/display/panel/elida,kd35t133.yaml b/Documentation/devicetree/bindings/display/panel/elida,kd35t133.yaml
> new file mode 100644
> index 000000000000..4bd74eaa61be
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/panel/elida,kd35t133.yaml
> @@ -0,0 +1,49 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/display/panel/elida,kd35t133.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Elida KD35T133 3.5in 320x480 DSI panel
> +
> +maintainers:
> +  - Heiko Stuebner <heiko.stuebner@theobroma-systems.com>
> +
> +allOf:
> +  - $ref: panel-common.yaml#
> +
> +properties:
> +  compatible:
> +    const: elida,kd35t133
> +  reg: true
> +  backlight: true
> +  reset-gpios: true
> +  iovcc-supply:
> +     description: regulator that supplies the iovcc voltage
> +  vdd-supply:
> +     description: regulator that supplies the vdd voltage
> +
> +required:
> +  - compatible
> +  - reg
> +  - backlight
Is backlight really required? If it is tied to for example vcc then
there is nothing to express in the DT.

	Sam

> +  - iovcc-supply
> +  - vdd-supply
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    dsi@ff450000 {
> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +        panel@0 {
> +            compatible = "elida,kd35t133";
> +            reg = <0>;
> +            backlight = <&backlight>;
> +            iovcc-supply = <&vcc_1v8>;
> +            vdd-supply = <&vcc3v3_lcd>;
> +        };
> +    };
> +
> +...
> -- 
> 2.24.1