[RFC PATCH net-next 1/8] dt-bindings: net: Add support for AM65x SR1.0 in ICSSG

[Roger Quadros]

Hi,

On 19/12/2023 19:45, Diogo Ivo wrote:
> Silicon Revision 1.0 of the AM65x came with a slightly different ICSSG
> support: Only 2 PRUs per slice are available and instead 2 additional
> DMA channels are used for management purposes. We have no restrictions
> on specified PRUs, but the DMA channels need to be adjusted.
> 
> Signed-off-by: Jan Kiszka <jan.kiszka at siemens.com>
> Signed-off-by: Diogo Ivo <diogo.ivo at siemens.com>
> ---
>  .../bindings/net/ti,icssg-prueth.yaml         | 62 +++++++++++++------
>  1 file changed, 44 insertions(+), 18 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/net/ti,icssg-prueth.yaml b/Documentation/devicetree/bindings/net/ti,icssg-prueth.yaml
> index 229c8f32019f..fbe51731854a 100644
> --- a/Documentation/devicetree/bindings/net/ti,icssg-prueth.yaml
> +++ b/Documentation/devicetree/bindings/net/ti,icssg-prueth.yaml
> @@ -19,30 +19,15 @@ allOf:
>  properties:
>    compatible:
>      enum:
> -      - ti,am642-icssg-prueth  # for AM64x SoC family
> -      - ti,am654-icssg-prueth  # for AM65x SoC family
> +      - ti,am642-icssg-prueth      # for AM64x SoC family
> +      - ti,am654-icssg-prueth      # for AM65x SoC family, SR2.x

You don't need to explicitly mention SR2.x here and in the rest of the patches.
That way there are fewer changes.

> +      - ti,am654-icssg-prueth-sr1  # for AM65x SoC family, SR1.0
>  
>    sram:
>      $ref: /schemas/types.yaml#/definitions/phandle
>      description:
>        phandle to MSMC SRAM node
>  
> -  dmas:
> -    maxItems: 10
> -
> -  dma-names:
> -    items:
> -      - const: tx0-0
> -      - const: tx0-1
> -      - const: tx0-2
> -      - const: tx0-3
> -      - const: tx1-0
> -      - const: tx1-1
> -      - const: tx1-2
> -      - const: tx1-3
> -      - const: rx0
> -      - const: rx1
> -
>    ti,mii-g-rt:
>      $ref: /schemas/types.yaml#/definitions/phandle
>      description:
> @@ -122,6 +107,47 @@ properties:
>        - required:
>            - port at 1
>  
> +if:
> +  properties:
> +    compatible:
> +      contains:
> +        enum:
> +          - ti,am654-icssg-prueth-sr1
> +then:
> +  properties:
> +    dmas:
> +      maxItems: 12
> +    dma-names:
> +      items:
> +        - const: tx0-0
> +        - const: tx0-1
> +        - const: tx0-2
> +        - const: tx0-3
> +        - const: tx1-0
> +        - const: tx1-1
> +        - const: tx1-2
> +        - const: tx1-3
> +        - const: rx0
> +        - const: rx1
> +        - const: rxmgm0
> +        - const: rxmgm1
> +else:
> +  properties:
> +    dmas:
> +      maxItems: 10
> +    dma-names:
> +      items:
> +        - const: tx0-0
> +        - const: tx0-1
> +        - const: tx0-2
> +        - const: tx0-3
> +        - const: tx1-0
> +        - const: tx1-1
> +        - const: tx1-2
> +        - const: tx1-3
> +        - const: rx0
> +        - const: rx1
> +
>  required:
>    - compatible
>    - sram

-- 
cheers,
-roger