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

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Message-ID: <9b535332-838d-6662-d0eb-feab075b2915@somainline.org>
Date:   Tue, 12 Jul 2022 22:50:26 +0200
From:   Konrad Dybcio <konrad.dybcio@...ainline.org>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.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 22:47, Krzysztof Kozlowski wrote:
> 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?
Not sure if it should, but in this case it probably could, the panels are
software-compatible, yes.

> 
>> +
>> +  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.
Will fix.

Konrad
> 
>> +                            remote-endpoint = <&dsi0_out>;
>> +                    };
>> +            };
>> +        };
>> +    };
>> +...
> 
> 
> Best regards,
> Krzysztof