Re: [PATCH] dt-bindings: mmc: mtk-sd: Set clocks based on compatible

[Krzysztof Kozlowski]

On 17/06/2022 16:01, Nícolas F. R. A. Prado wrote:
> The binding was describing a single clock list for all platforms, but
> that's not really suitable: mt2712 requires an extra 'bus_clk' on some
> of its controllers, while mt8192 requires four different extra clocks.
> The rest of the platforms can share the same 3 clocks, with the third
> being optional as it's not present on all platforms.
> 
> Move the clock definitions inside if blocks that match on the
> compatibles. In practice this gets rid of dtbs_check warnings on mt8192,
> since the 'bus_clk' clock from mt2712 is no longer expected on this
> platform.
> 
> Fixes: 59a23395d8aa ("dt-bindings: mmc: Add support for MT8192 SoC")
> Signed-off-by: Nícolas F. R. A. Prado <nfraprado@xxxxxxxxxxxxx>
> 
> ---
> 
>  .../devicetree/bindings/mmc/mtk-sd.yaml       | 115 ++++++++++++------
>  1 file changed, 81 insertions(+), 34 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/mmc/mtk-sd.yaml b/Documentation/devicetree/bindings/mmc/mtk-sd.yaml
> index 2a2e9fa8c188..ba48ff041299 100644
> --- a/Documentation/devicetree/bindings/mmc/mtk-sd.yaml
> +++ b/Documentation/devicetree/bindings/mmc/mtk-sd.yaml
> @@ -10,9 +10,6 @@ maintainers:
>    - Chaotian Jing <chaotian.jing@xxxxxxxxxxxx>
>    - Wenbin Mei <wenbin.mei@xxxxxxxxxxxx>
>  
> -allOf:
> -  - $ref: mmc-controller.yaml#
> -
>  properties:
>    compatible:
>      oneOf:
> @@ -48,28 +45,8 @@ properties:
>    clocks:
>      description:
>        Should contain phandle for the clock feeding the MMC controller.
> -    minItems: 2

Keep minItems and maxItems matching the widest constraints.

> -    items:
> -      - description: source clock (required).
> -      - description: HCLK which used for host (required).
> -      - description: independent source clock gate (required for MT2712).
> -      - description: bus clock used for internal register access (required for MT2712 MSDC0/3).
> -      - description: msdc subsys clock gate (required for MT8192).
> -      - description: peripheral bus clock gate (required for MT8192).
> -      - description: AXI bus clock gate (required for MT8192).
> -      - description: AHB bus clock gate (required for MT8192).
> -
> -  clock-names:
> -    minItems: 2

ditto

>  


Best regards,
Krzysztof