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

From: Herve Codina <[email-masked]>
Date: Thu, 7 May 2026 13:40:43 +0200

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

IMHO they should be updated as part of the series.

Best regards,
Hervé