Re: [PATCH v2] dt-bindings: PCI: mediatek-gen3: Add support for MT8195

[Jianjun Wang (王建军)]

On Mon, 2021-08-30 at 11:02 -0500, Rob Herring wrote:
> On Thu, Aug 26, 2021 at 9:26 PM Jianjun Wang <
> jianjun.wang@xxxxxxxxxxxx> wrote:
> > 
> > MT8195 is an ARM platform SoC which has the same PCIe IP with
> > MT8192.
> > 
> > Signed-off-by: Jianjun Wang <jianjun.wang@xxxxxxxxxxxx>
> > ---
> >  Documentation/devicetree/bindings/pci/mediatek-pcie-gen3.yaml | 4
> > +++-
> >  1 file changed, 3 insertions(+), 1 deletion(-)
> > 
> > diff --git a/Documentation/devicetree/bindings/pci/mediatek-pcie-
> > gen3.yaml b/Documentation/devicetree/bindings/pci/mediatek-pcie-
> > gen3.yaml
> > index 742206dbd965..93e09c3029b7 100644
> > --- a/Documentation/devicetree/bindings/pci/mediatek-pcie-gen3.yaml
> > +++ b/Documentation/devicetree/bindings/pci/mediatek-pcie-gen3.yaml
> > @@ -48,7 +48,9 @@ allOf:
> > 
> >  properties:
> >    compatible:
> > -    const: mediatek,mt8192-pcie
> > +    enum:
> > +      - mediatek,mt8192-pcie
> > +      - mediatek,mt8195-pcie
> 
> I thought you wanted to support 8192 as the fallback:
> 
> compatible = "mediatek,mt8195-pcie", "mediatek,mt8192-pcie";
> 
> The above schema doesn't allow this.
> 
> Rob

Hi Rob,

Yes, I want this fallback to support MT8195, but there are some un-
documented warnings if I don't add its compatible string to the yaml
file.

Do you have any suggestions in this case?

Thanks.