Re: [PATCH v3 2/5] dt-bindings: media: arm,mali-c55: Describe DMA line-tick interrupts

[Dan Scally <dan.scally@ideasonboard.com>]

Hi Linus

On 28/09/2026 13:21, Linus Walleij wrote:
> Mali-C55 exposes separate full-resolution and UV DMA writer line-tick
> interrupts in addition to its combined core interrupt.
> 
> Describe these optional interrupts, keeping the core interrupt first and
> requiring only that entry to preserve support for existing device trees.
> Extend the example to show all three interrupts using mock interrupt
> numbers.
> 
> Assisted-by: LLM
> Signed-off-by: Linus Walleij <linusw@kernel.org>
> ---
>   Documentation/devicetree/bindings/media/arm,mali-c55.yaml | 11 +++++++++--
>   1 file changed, 9 insertions(+), 2 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/media/arm,mali-c55.yaml b/Documentation/devicetree/bindings/media/arm,mali-c55.yaml
> index fc4fcd19922a..8fcc46660b75 100644
> --- a/Documentation/devicetree/bindings/media/arm,mali-c55.yaml
> +++ b/Documentation/devicetree/bindings/media/arm,mali-c55.yaml
> @@ -18,7 +18,11 @@ properties:
>       maxItems: 1
>   
>     interrupts:
> -    maxItems: 1
> +    minItems: 1
> +    items:
> +      - description: Combined ISP core interrupt
> +      - description: Full-resolution DMA writer line-tick interrupt
> +      - description: Full-resolution UV DMA writer line-tick interrupt

As with the IVC, perhaps an interrupt-names entry would also be useful?

Thanks
Dan

>   
>     clocks:
>       items:
> @@ -75,7 +79,10 @@ examples:
>         clock-names = "vclk", "aclk", "hclk";
>         resets = <&resets 0>, <&resets 1>, <&resets 2>;
>         reset-names = "vresetn", "aresetn", "hresetn";
> -      interrupts = <GIC_SPI 861 IRQ_TYPE_EDGE_RISING>;
> +      /* Example interrupt numbers. */
> +      interrupts = <GIC_SPI 100 IRQ_TYPE_LEVEL_HIGH>,
> +                   <GIC_SPI 101 IRQ_TYPE_EDGE_RISING>,
> +                   <GIC_SPI 102 IRQ_TYPE_EDGE_RISING>;
>   
>         port {
>           isp_in: endpoint {
>