linux-kernel - Re: [PATCH 1/2] dt-bindings: display/panel: Add Sony Tama TD4353 JDI display panel

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Date:   Tue, 12 Jul 2022 22:47:57 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Konrad Dybcio <konrad.dybcio@...ainline.org>,
        ~postmarketos/upstreaming@...ts.sr.ht
Cc:     martin.botka@...ainline.org,
        angelogioacchino.delregno@...ainline.org,
        marijn.suijten@...ainline.org, jamipkettunen@...ainline.org,
        Thierry Reding <thierry.reding@...il.com>,
        Sam Ravnborg <sam@...nborg.org>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] dt-bindings: display/panel: Add Sony Tama TD4353 JDI
 display panel

On 12/07/2022 22:02, Konrad Dybcio wrote:
> Add bindings for the display panel used on some Sony Xperia XZ2 and XZ2
> Compact smartphones.
> 
> Signed-off-by: Konrad Dybcio <konrad.dybcio@...ainline.org>
> ---
>  .../display/panel/sony,td4353-jdi.yaml        | 84 +++++++++++++++++++
>  1 file changed, 84 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/display/panel/sony,td4353-jdi.yaml
> 
> diff --git a/Documentation/devicetree/bindings/display/panel/sony,td4353-jdi.yaml b/Documentation/devicetree/bindings/display/panel/sony,td4353-jdi.yaml
> new file mode 100644
> index 000000000000..d75abc72ad1b
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/panel/sony,td4353-jdi.yaml
> @@ -0,0 +1,84 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/display/panel/sony,td4353-jdi.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Sony TD4353 JDI 5 / 5.7" 2160x1080 MIPI-DSI Panel
> +
> +maintainers:
> +  - Konrad Dybcio <konrad.dybcio@...ainline.org>
> +
> +description: |
> +  The Sony TD4353 JDI is a 5 (XZ2c) / 5.7 (XZ2) inch 2160x1080
> +  MIPI-DSI panel, used in Xperia XZ2 and XZ2 Compact smartphones.
> +
> +allOf:
> +  - $ref: panel-common.yaml#
> +
> +properties:
> +  compatible:
> +    enum:
> +      - sony,td4353-jdi-akari
> +      - sony,td4353-jdi-apollo

Shouldn't the properties of panel like width and height be specified by
dedicated properties, instead of customizing compatible? The device is
"td4353-jdi", the same in both cases, isn't it?

> +
> +  reg: true
> +
> +  backlight: true
> +
> +  vddio-supply:
> +    description: VDDIO 1.8V supply
> +
> +  vsp-supply:
> +    description: Positive 5.5V supply
> +
> +  vsn-supply:
> +    description: Negative 5.5V supply
> +
> +  preset-gpios:
> +    description: Display panel reset pin
> +
> +  treset-gpios:
> +    description: Touch panel reset pin
> +
> +  port: true
> +
> +required:
> +  - compatible
> +  - reg
> +  - vddio-supply
> +  - vsp-supply
> +  - vsn-supply
> +  - preset-gpios
> +  - treset-gpios
> +  - port
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/gpio/gpio.h>
> +
> +    dsi {
> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +
> +        panel: panel@0 {
> +            compatible = "sony,td4353-jdi-akari";
> +            reg = <0>;
> +
> +            backlight = <&pmi8998_wled>;
> +            vddio-supply = <&vreg_l14a_1p8>;
> +            vsp-supply = <&lab>;
> +            vsn-supply = <&ibb>;
> +            preset-gpios = <&tlmm 6 GPIO_ACTIVE_HIGH>;
> +            treset-gpios = <&tlmm 99 GPIO_ACTIVE_HIGH>;
> +
> +            port {
> +                    panel_in: endpoint {

Inconsistent indentation.

> +                            remote-endpoint = <&dsi0_out>;
> +                    };
> +            };
> +        };
> +    };
> +...


Best regards,
Krzysztof