linux-kernel - Re: [PATCH v3 2/7] dt-bindings: mmc: mtk-sd: Set clocks based on compatible

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Date:   Mon, 24 Oct 2022 12:43:53 -0400
From:   Nícolas F. R. A. Prado 
        <nfraprado@...labora.com>
To:     Frank Wunderlich <linux@...web.de>
Cc:     linux-mediatek@...ts.infradead.org,
        Frank Wunderlich <frank-w@...lic-files.de>,
        Chaotian Jing <chaotian.jing@...iatek.com>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Wenbin Mei <wenbin.mei@...iatek.com>,
        linux-mmc@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 2/7] dt-bindings: mmc: mtk-sd: Set clocks based on
 compatible

Hi,

thank you for picking this up.

On Sun, Oct 23, 2022 at 11:12:42AM +0200, Frank Wunderlich wrote:
> From: Nícolas F. R. A. Prado <nfraprado@...labora.com>
> 
> The binding was describing a single clock list for all platforms, but
> that's not really suitable:
> 
> Most platforms using at least 2 clocks (source, hclk), some of them
> a third "source_cg". Mt2712 requires an extra 'bus_clk' on some of
> its controllers, while mt8192 requires 8 clocks.
> 
> Move the clock definitions inside if blocks that match on the
> compatibles.
> 
> I used Patch from Nícolas F. R. A. Prado and modified it to not using
> "not" statement.
> 
> Fixes: 59a23395d8aa ("dt-bindings: mmc: Add support for MT8192 SoC")
> Signed-off-by: Nícolas F. R. A. Prado <nfraprado@...labora.com>
> Signed-off-by: Frank Wunderlich <frank-w@...lic-files.de>
> 
> ---
> v2:
> - add this patch
> v3:
> - add blank lines and change "not" to matchlist
> - reorder entries - make generic first then order alphanumeric
> - rewrite commit description
> - drop soc-specific mt8183 - constraints were also set for it above

This is wrong, see below.

> ---
>  .../devicetree/bindings/mmc/mtk-sd.yaml       | 113 +++++++++++++-----
>  1 file changed, 83 insertions(+), 30 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/mmc/mtk-sd.yaml b/Documentation/devicetree/bindings/mmc/mtk-sd.yaml
> index 3cbf0208f1b4..31bb6dc329d2 100644
> --- a/Documentation/devicetree/bindings/mmc/mtk-sd.yaml
> +++ b/Documentation/devicetree/bindings/mmc/mtk-sd.yaml
[..]
>  
> -if:
> -  properties:
> -    compatible:
> -      contains:
> -        const: mediatek,mt8183-mmc
> -then:
> -  properties:
> -    reg:
> -      minItems: 2

You can't drop this. Nodes with the mt8183 compatible should keep requiring two
reg values. It's not covered by the branch below.

Thanks,
Nícolas

> +allOf:
> +  - $ref: mmc-controller.yaml#
> +  - if:
> +      properties:
> +        compatible:
> +          enum:
> +            - mediatek,mt2701-mmc
> +            - mediatek,mt6779-mmc
> +            - mediatek,mt6795-mmc
> +            - mediatek,mt7620-mmc
> +            - mediatek,mt7622-mmc
> +            - mediatek,mt7623-mmc
> +            - mediatek,mt8135-mmc
> +            - mediatek,mt8173-mmc
> +            - mediatek,mt8183-mmc
> +            - mediatek,mt8186-mmc
> +            - mediatek,mt8188-mmc
> +            - mediatek,mt8195-mmc
> +            - mediatek,mt8516-mmc
> +    then:
> +      properties:
> +        clocks:
> +          minItems: 2
> +          items:
> +            - description: source clock
> +            - description: HCLK which used for host
> +            - description: independent source clock gate
> +        clock-names:
> +          minItems: 2
> +          items:
> +            - const: source
> +            - const: hclk
> +            - const: source_cg
> +
[..]