Re: [PATCH v8 1/3] dt-bindings: net: sophgo,sg2044-dwmac: add phy mode restriction

[Conor Dooley <conor@kernel.org>]

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On Fri, Nov 14, 2025 at 08:44:15AM +0800, Inochi Amaoto wrote:
> On Fri, Nov 14, 2025 at 08:38:03AM +0800, Inochi Amaoto wrote:
> > As the ethernet controller of SG2044 and SG2042 only supports
> > RGMII phy. Add phy-mode property to restrict the value.
> > 
> > Also, since SG2042 has internal rx delay in its mac, make
> > only "rgmii-txid" and "rgmii-id" valid for phy-mode.
> > 
> > Fixes: e281c48a7336 ("dt-bindings: net: sophgo,sg2044-dwmac: Add support for Sophgo SG2042 dwmac")
> > Signed-off-by: Inochi Amaoto <inochiama@gmail.com>
> > Acked-by: Conor Dooley <conor.dooley@microchip.com>
> 
> > ---
> >  .../bindings/net/sophgo,sg2044-dwmac.yaml     | 19 +++++++++++++++++++
> >  1 file changed, 19 insertions(+)
> > 
> > diff --git a/Documentation/devicetree/bindings/net/sophgo,sg2044-dwmac.yaml b/Documentation/devicetree/bindings/net/sophgo,sg2044-dwmac.yaml
> > index ce21979a2d9a..e8d3814db0e9 100644
> > --- a/Documentation/devicetree/bindings/net/sophgo,sg2044-dwmac.yaml
> > +++ b/Documentation/devicetree/bindings/net/sophgo,sg2044-dwmac.yaml
> > @@ -70,6 +70,25 @@ required:
> >  
> >  allOf:
> >    - $ref: snps,dwmac.yaml#
> > +  - if:
> > +      properties:
> > +        compatible:
> > +          contains:
> > +            const: sophgo,sg2042-dwmac
> > +    then:
> > +      properties:
> > +        phy-mode:
> > +          enum:
> 
> > +            - rgmii-rxid
> > +            - rgmii-id
> 
> Hi, Conor,
> 
> I have restricted the phy-mode with wrong mode here, it should be
> rgmii-rxid instead of rgmii-txid as the SG2042 always add rx delay
> in their mac. As this is more like a mistake for me when writing
> the binding, I keep you tag with the fix. If you need something
> further, please let me know.

Yeah that's fine chief. In general, if it is some hardware detail
that I couldn't possibly know was correct or incorrect without
reading the device's documentation then I probably don't care about
the binding change required for it when it's so minimal. Probably the
same goes for Rob and Krzysztof.

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