linux-kernel - Re: [PATCH 2/7] dt-bindings: display: mediatek: dpi: add binding for MT8365

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Date:   Tue, 31 May 2022 13:53:41 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Fabien Parent <fparent@...libre.com>, matthias.bgg@...il.com,
        ck.hu@...iatek.com, jitao.shi@...iatek.com,
        krzysztof.kozlowski+dt@...aro.org, robh+dt@...nel.org
Cc:     chunkuang.hu@...nel.org, p.zabel@...gutronix.de, airlied@...ux.ie,
        daniel@...ll.ch, dri-devel@...ts.freedesktop.org,
        linux-mediatek@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 2/7] dt-bindings: display: mediatek: dpi: add binding for
 MT8365

On 30/05/2022 22:14, Fabien Parent wrote:
> DPI for MT8365 is compatible with MT8192 but requires an additional
> clock. Modify the documentation to requires this clock only on MT8365 SoCs.
> 
> Signed-off-by: Fabien Parent <fparent@...libre.com>
> ---
>  .../display/mediatek/mediatek,dpi.yaml        | 44 ++++++++++++++++---
>  1 file changed, 37 insertions(+), 7 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,dpi.yaml b/Documentation/devicetree/bindings/display/mediatek/mediatek,dpi.yaml
> index caf4c88708f4..c9c9f4d5ebe7 100644
> --- a/Documentation/devicetree/bindings/display/mediatek/mediatek,dpi.yaml
> +++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,dpi.yaml
> @@ -17,13 +17,18 @@ description: |
>  
>  properties:
>    compatible:
> -    enum:
> -      - mediatek,mt2701-dpi
> -      - mediatek,mt7623-dpi
> -      - mediatek,mt8173-dpi
> -      - mediatek,mt8183-dpi
> -      - mediatek,mt8186-dpi
> -      - mediatek,mt8192-dpi
> +    oneOf:
> +      - enum:
> +          - mediatek,mt2701-dpi
> +          - mediatek,mt7623-dpi
> +          - mediatek,mt8173-dpi
> +          - mediatek,mt8183-dpi
> +          - mediatek,mt8186-dpi
> +          - mediatek,mt8192-dpi
> +      - items:
> +          - enum:
> +              - mediatek,mt8365-dpi
> +          - const: mediatek,mt8192-dpi
>  
>    reg:
>      maxItems: 1
> @@ -32,16 +37,20 @@ properties:
>      maxItems: 1
>  
>    clocks:
> +    minItems: 3
>      items:
>        - description: Pixel Clock
>        - description: Engine Clock
>        - description: DPI PLL
> +      - description: DPI Clock
>  
>    clock-names:
> +    minItems: 3
>      items:
>        - const: pixel
>        - const: engine
>        - const: pll
> +      - const: dpi
>  
>    pinctrl-0: true
>    pinctrl-1: true
> @@ -71,6 +80,27 @@ required:
>  
>  additionalProperties: false
>  
> +allOf:
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            const: mediatek,mt8365-dpi
> +
> +    then:
> +      properties:
> +        clocks:
> +          maxItems: 4
> +        clock-names:
> +          maxItems: 4

These should be minItems instead.

> +
> +    else:
> +      properties:
> +        clocks:
> +          maxItems: 3
> +        clock-names:
> +          maxItems: 3
> +
>  examples:
>    - |
>      #include <dt-bindings/interrupt-controller/arm-gic.h>


Best regards,
Krzysztof