On Tue, Mar 10, 2026 at 02:22:00PM -0700, Charles Perry wrote:
> Add "microchip,pic64hpsc-gem" for "PIC64-HPSC" and
> "microchip,pic64hx-gem" for "PIC64HX", compatible with the former.
> 
> The generic compatible "cdns,gem" works but offers limited features.
> Keep it as a fallback.
> 
> The GEM IPs within pic64hpsc have their MDIO controllers
> unconnected from any physical pin. Add a check to prevent adding PHYs
> under the GEM node.
> 
> Signed-off-by: Charles Perry <charles.perry@microchip.com>

Acked-by: Conor Dooley <conor.dooley@microchip.com>

> ---
>  .../devicetree/bindings/net/cdns,macb.yaml    | 19 +++++++++++++++++++
>  1 file changed, 19 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/net/cdns,macb.yaml b/Documentation/devicetree/bindings/net/cdns,macb.yaml
> index cb14c35ba996..b934abd98e20 100644
> --- a/Documentation/devicetree/bindings/net/cdns,macb.yaml
> +++ b/Documentation/devicetree/bindings/net/cdns,macb.yaml
> @@ -70,6 +70,14 @@ properties:
>                - microchip,sama7d65-gem   # Microchip SAMA7D65 gigabit ethernet interface
>            - const: microchip,sama7g5-gem # Microchip SAMA7G5 gigabit ethernet interface
>  
> +      - items:
> +          - const: microchip,pic64hpsc-gem # Microchip PIC64-HPSC
> +          - const: cdns,gem
> +      - items:
> +          - const: microchip,pic64hx-gem   # Microchip PIC64HX
> +          - const: microchip,pic64hpsc-gem # Microchip PIC64-HPSC
> +          - const: cdns,gem
> +
>    reg:
>      minItems: 1
>      items:
> @@ -196,6 +204,17 @@ 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
>