Re: [PATCH v3] dt-bindings: PCI: mediatek-gen3: Add support for MT8188 and MT8195

[Krzysztof Kozlowski]

On 01/08/2022 13:37, Jianjun Wang wrote:
> MT8188 and MT8195 are ARM platform SoCs with the same PCIe IP as MT8192.
> 
> Also add new clock name "peri_mem" since the MT8188 and MT8195 use clock
> "peri_mem" instead of "top_133m".
> 
> Signed-off-by: Jianjun Wang <jianjun.wang@xxxxxxxxxxxx>
> ---
> Changes in v3:
> Use enum property to add the new clock name.
> 
> Changes in v2:
> Merge two patches into one.
> ---
>  .../bindings/pci/mediatek-pcie-gen3.yaml           | 14 ++++++++++++--
>  1 file changed, 12 insertions(+), 2 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/pci/mediatek-pcie-gen3.yaml b/Documentation/devicetree/bindings/pci/mediatek-pcie-gen3.yaml
> index 0499b94627ae..a0ca9c7f5dfa 100644
> --- a/Documentation/devicetree/bindings/pci/mediatek-pcie-gen3.yaml
> +++ b/Documentation/devicetree/bindings/pci/mediatek-pcie-gen3.yaml
> @@ -48,7 +48,14 @@ allOf:
>  
>  properties:
>    compatible:
> -    const: mediatek,mt8192-pcie
> +    oneOf:
> +      - items:
> +          - enum:
> +              - mediatek,mt8188-pcie
> +              - mediatek,mt8195-pcie
> +          - const: mediatek,mt8192-pcie
> +      - items:

You have one item, so this is just const. Or enum if  you expect it to
grow soon.

> +          - const: mediatek,mt8192-pcie
>  
>    reg:
>      maxItems: 1
> @@ -84,7 +91,9 @@ properties:
>        - const: tl_96m
>        - const: tl_32k
>        - const: peri_26m
> -      - const: top_133m
> +      - enum:
> +          - top_133m        # for MT8192
> +          - peri_mem        # for MT8188/MT8195

This requires allOf:if:then restricting it further per variant.



Best regards,
Krzysztof