Re: [PATCH net-next 2/4] dt-bindings: net: cdns,macb: forbid phy nodes for Microchip p64h

[Charles Perry <charles.perry@microchip.com>]

On Tue, Mar 03, 2026 at 06:11:42PM +0000, Conor Dooley wrote:
> On Tue, Mar 03, 2026 at 10:03:16AM -0800, Charles Perry wrote:
> > The GEM IPs within Microchip p64h have their MDIO controllers
> > unconnected from any physical pin.
> > 
> > When compiling a p64h device tree with a phy on a GEM node with
> > CHECK_DTBS=1, this generates an error like:
> > 
> > ```
> > linux/arch/riscv/boot/dts/microchip/p64h-hb130x.dtb:
> > ethernet@40004180000 (microchip,p64h-gem): ethernet-phy@0: False
> > schema does not allow {'reg': [[0]]}
> > 	from schema $id:
> > http://devicetree.org/schemas/net/cdns,macb.yaml#
> > ```
> 
> This should just be part of the patch adding the compatible. Adding it
> incorrectly only to fix it up one patch later doesn't make sense.
> Additionally, remove this information about the error adding this
> produces, all you need here is the justification for it.
> 

Ok

Thanks,
Charles

> pw-bot: changes-requested
> 
> > 
> > Signed-off-by: Charles Perry <charles.perry@microchip.com>
> > ---
> >  Documentation/devicetree/bindings/net/cdns,macb.yaml | 11 +++++++++++
> >  1 file changed, 11 insertions(+)
> > 
> > diff --git a/Documentation/devicetree/bindings/net/cdns,macb.yaml b/Documentation/devicetree/bindings/net/cdns,macb.yaml
> > index dff350302098..be66cc9a42fd 100644
> > --- a/Documentation/devicetree/bindings/net/cdns,macb.yaml
> > +++ b/Documentation/devicetree/bindings/net/cdns,macb.yaml
> > @@ -197,6 +197,17 @@ allOf:
> >        required:
> >          - phys
> >  
> > +  - if:
> > +      properties:
> > +        compatible:
> > +          contains:
> > +            const: microchip,p64h-gem
> > +    then:
> > +      patternProperties:
> > +        "^ethernet-phy@[0-9a-f]$": false
> > +      properties:
> > +        mdio: false
> > +
> >  unevaluatedProperties: false
> >  
> >  examples:
> > -- 
> > 2.47.3
> >