Re: [PATCH v6 3/5] dt-bindings: dma: arm,dma-350: Describe the CIX Sky1 integration

[Frank Li]

On Fri, Nov 06, 2026 at 09:34:51AM +0800, Jelly Jia wrote:
> DMA-350 integrations may gate the controller with a bus clock or hold it
> in reset. Describe these standard resources on the DMA controller node.
>
> Add the CIX Sky1 compatible with an arm,dma-350 fallback. Sky1 requires
> a bus clock for both its FCH and AUDSS instances, while only the AUDSS
> instance provides a reset. Require clocks for the Sky1 compatible and
> keep resets optional.
>
> Both resources remain optional for the generic compatible alone, so
> existing device trees remain valid.
>
> Signed-off-by: Jelly Jia <Jelly.Jia@xxxxxxxxxxx>
> ---

Reviewed-by: Frank Li <Frank.Li@xxxxxxx>

>  .../devicetree/bindings/dma/arm,dma-350.yaml  | 30 ++++++++++++++++---
>  1 file changed, 26 insertions(+), 4 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/dma/arm,dma-350.yaml b/Documentation/devicetree/bindings/dma/arm,dma-350.yaml
> index 429f682f15d8..eab3b31aeba7 100644
> --- a/Documentation/devicetree/bindings/dma/arm,dma-350.yaml
> +++ b/Documentation/devicetree/bindings/dma/arm,dma-350.yaml
> @@ -9,12 +9,13 @@ title: Arm CoreLink DMA-350 Controller
>  maintainers:
>    - Robin Murphy <robin.murphy@xxxxxxx>
>
> -allOf:
> -  - $ref: dma-controller.yaml#
> -
>  properties:
>    compatible:
> -    const: arm,dma-350
> +    oneOf:
> +      - const: arm,dma-350
> +      - items:
> +          - const: cix,sky1-dma350
> +          - const: arm,dma-350
>
>    reg:
>      items:
> @@ -36,9 +37,30 @@ properties:
>      const: 1
>      description: The cell is the trigger input number
>
> +  clocks:
> +    maxItems: 1
> +    description:
> +      Bus clock, where the integration gates the controller clock.
> +
> +  resets:
> +    maxItems: 1
> +    description:
> +      Optional reset line, where the integration exposes one.
> +
>  required:
>    - compatible
>    - reg
>    - interrupts
>
> +allOf:
> +  - $ref: dma-controller.yaml#
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            const: cix,sky1-dma350
> +    then:
> +      required:
> +        - clocks
> +
>  unevaluatedProperties: false
> --
> 2.54.0
>