[PATCH v5 1/3] dt-bindings: dma: arm-dma350: document combined and per-channel IRQ topologies

[Rob Herring]

On Tue, Mar 24, 2026 at 08:01:11PM +0800, Jun Guo wrote:
> Document the interrupt topologies supported by DMA-350 integration:
> - one combined interrupt for all channels, or
> - one interrupt per channel (up to 8 channels).
> 
> Assisted-by: Cursor:GPT-5.3-Codex
> Signed-off-by: Jun Guo <jun.guo at cixtech.com>
> ---
>  .../devicetree/bindings/dma/arm,dma-350.yaml  | 25 ++++++++++++-------
>  1 file changed, 16 insertions(+), 9 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/dma/arm,dma-350.yaml b/Documentation/devicetree/bindings/dma/arm,dma-350.yaml
> index 429f682f15d8..bec9dc32541b 100644
> --- a/Documentation/devicetree/bindings/dma/arm,dma-350.yaml
> +++ b/Documentation/devicetree/bindings/dma/arm,dma-350.yaml
> @@ -22,15 +22,22 @@ properties:
>  
>    interrupts:
>      minItems: 1
> -    items:
> -      - description: Channel 0 interrupt
> -      - description: Channel 1 interrupt
> -      - description: Channel 2 interrupt
> -      - description: Channel 3 interrupt
> -      - description: Channel 4 interrupt
> -      - description: Channel 5 interrupt
> -      - description: Channel 6 interrupt
> -      - description: Channel 7 interrupt
> +    maxItems: 8

Don't need maxItems

> +    description:
> +      Either one interrupt per channel (8 interrupts), or one
> +      combined interrupt for all channels.
> +    oneOf:
> +      - items:
> +          - description: Channel 0 interrupt
> +          - description: Channel 1 interrupt
> +          - description: Channel 2 interrupt
> +          - description: Channel 3 interrupt
> +          - description: Channel 4 interrupt
> +          - description: Channel 5 interrupt
> +          - description: Channel 6 interrupt
> +          - description: Channel 7 interrupt
> +      - items:
> +          - description: Combined interrupt shared by all channels
>  
>    "#dma-cells":
>      const: 1
> -- 
> 2.34.1
>