Subject: Re: [PATCH] dt-bindings: net: lan966x: Accept standard ethernet prefixes

From: Herve Codina <[email-masked]>
Date: Thu, 7 May 2026 14:13:05 +0200

Hi Rob, Linus,

On Thu, 7 May 2026 06:59:35 -0500
Rob Herring <[email-masked]> wrote:

> On Thu, May 07, 2026 at 01:40:43PM +0200, Herve Codina wrote:
> > Hi Linus,
> > 
> > On Thu, 07 May 2026 11:26:01 +0200
> > Linus Walleij <[email-masked]> wrote:
> >   
> > > The dsa.yaml and ethernet-switch.yaml bindings recommend
> > > prefixing ethernet switches and ports with "ethernet-" so
> > > make the LAN966x do the same.
> > > 
> > > Reported-by: Herve Codina <[email-masked]>
> > > Signed-off-by: Linus Walleij <[email-masked]>
> > > ---
> > >  .../devicetree/bindings/net/microchip,lan966x-switch.yaml      | 10 +++++-----
> > >  1 file changed, 5 insertions(+), 5 deletions(-)
> > > 
> > > diff --git a/Documentation/devicetree/bindings/net/microchip,lan966x-switch.yaml b/Documentation/devicetree/bindings/net/microchip,lan966x-switch.yaml
> > > index 306ef9ecf2b9..0f0f35865ef4 100644
> > > --- a/Documentation/devicetree/bindings/net/microchip,lan966x-switch.yaml
> > > +++ b/Documentation/devicetree/bindings/net/microchip,lan966x-switch.yaml
> > > @@ -17,7 +17,7 @@ description: |
> > >  
> > >  properties:
> > >    $nodename:
> > > -    pattern: "^switch@[0-9a-f]+$"
> > > +    pattern: "^(ethernet-)?switch@[0-9a-f]+$"
> > >  
> > >    compatible:
> > >      const: microchip,lan966x-switch
> > > @@ -70,7 +70,7 @@ properties:
> > >      additionalProperties: false
> > >  
> > >      patternProperties:
> > > -      "^port@[0-9a-f]+$":
> > > +      "^(ethernet-)?port@[0-9a-f]+$":
> > >          type: object
> > >  
> > >          $ref: /schemas/net/ethernet-controller.yaml#
> > > @@ -138,7 +138,7 @@ additionalProperties: false
> > >  examples:
> > >    - |
> > >      #include <dt-bindings/interrupt-controller/arm-gic.h>
> > > -    switch: switch@e0000000 {
> > > +    switch: ethernet-switch@e0000000 {
> > >        compatible = "microchip,lan966x-switch";
> > >        reg =  <0xe0000000 0x0100000>,
> > >               <0xe2000000 0x0800000>;
> > > @@ -151,14 +151,14 @@ examples:
> > >          #address-cells = <1>;
> > >          #size-cells = <0>;
> > >  
> > > -        port0: port@0 {
> > > +        port0: ethernet-port@0 {
> > >            reg = <0>;
> > >            phy-handle = <&phy0>;
> > >            phys = <&serdes 0 0>;
> > >            phy-mode = "gmii";
> > >          };
> > >  
> > > -        port1: port@1 {
> > > +        port1: ethernet-port@1 {
> > >            reg = <1>;
> > >            sfp = <&sfp_eth1>;
> > >            managed = "in-band-status";
> > > 
> > > ---
> > > base-commit: 254f49634ee16a731174d2ae34bc50bd5f45e731
> > > change-id: 20260507-lan966-binding-0df62a018509
> > > 
> > > Best regards,
> > > --  
> > > Linus Walleij <[email-masked]>
> > >   
> > 
> > With those changes, dtb_check will not be happy when following dtsi/dts are
> > involved:
> >   - arch/arm/boot/dts/microchip/lan966x.dtsi
> >   - arch/arm/boot/dts/microchip/lan966x-kontron-kswitch-d10-mmt.dtsi
> >   - arch/arm/boot/dts/microchip/lan966x-pcb8290.dts
> >   - arch/arm/boot/dts/microchip/lan966x-kontron-kswitch-d10-mmt-6g-2gs.dts
> >   - arch/arm/boot/dts/microchip/lan966x-kontron-kswitch-d10-mmt-8g.dts  
> 
> How so? the added prefix is optional.

Oups, I've missed that. My bad.

Reviewed-by: Herve Codina <[email-masked]>

Sorry for the noise.

Best regards,
Hervé