Re: [PATCH v6 1/4] dt-bindings: can: rockchip_canfd: add rk3576 CAN-FD controller

[Conor Dooley <conor@kernel.org>]

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On Mon, May 26, 2025 at 02:25:56PM +0800, Elaine Zhang wrote:
> Add documentation for the rockchip rk3576 CAN-FD controller.
> 
> Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
> ---
>  .../net/can/rockchip,rk3568v2-canfd.yaml      | 41 +++++++++++++++++++
>  1 file changed, 41 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/net/can/rockchip,rk3568v2-canfd.yaml b/Documentation/devicetree/bindings/net/can/rockchip,rk3568v2-canfd.yaml
> index a077c0330013..c6595fef6cb5 100644
> --- a/Documentation/devicetree/bindings/net/can/rockchip,rk3568v2-canfd.yaml
> +++ b/Documentation/devicetree/bindings/net/can/rockchip,rk3568v2-canfd.yaml
> @@ -12,11 +12,27 @@ maintainers:
>  
>  allOf:
>    - $ref: can-controller.yaml#
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            const: rockchip,rk3576-canfd
> +      required:
> +        - compatible
> +    then:
> +      required:
> +        - dmas
> +        - dma-names
> +    else:
> +      properties:
> +        dmas: false
> +        dma-names: false

Once the allOf contains more than just an include it should be moved
down below the properties that it is constraining. Otherwise, I think
this looks fine.

>  
>  properties:
>    compatible:
>      oneOf:
>        - const: rockchip,rk3568v2-canfd
> +      - const: rockchip,rk3576-canfd
>        - items:
>            - const: rockchip,rk3568v3-canfd
>            - const: rockchip,rk3568v2-canfd
> @@ -43,6 +59,13 @@ properties:
>        - const: core
>        - const: apb
>  
> +  dmas:
> +    maxItems: 1
> +
> +  dma-names:
> +    items:
> +      - const: rx
> +
>  required:
>    - compatible
>    - reg
> @@ -72,3 +95,21 @@ examples:
>              reset-names = "core", "apb";
>          };
>      };
> +
> +  - |
> +    soc {
> +        #address-cells = <2>;
> +        #size-cells = <2>;
> +
> +        can@2ac00000 {
> +            compatible = "rockchip,rk3576-canfd";
> +            reg = <0x0 0x2ac00000 0x0 0x1000>;
> +            interrupts = <GIC_SPI 121 IRQ_TYPE_LEVEL_HIGH>;
> +            clocks = <&cru CLK_CAN0>, <&cru PCLK_CAN0>;
> +            clock-names = "baud", "pclk";
> +            resets = <&cru SRST_CAN0>, <&cru SRST_P_CAN0>;
> +            reset-names = "core", "apb";
> +            dmas = <&dmac0 20>;
> +            dma-names = "rx";
> +        };
> +    };
> -- 
> 2.34.1
> 

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