[PATCH v3 1/3] dt-bindings: dma: arm-dma350: document generic and combined IRQ topologies

[Jun Guo]

On 3/20/2026 5:12 PM, Krzysztof Kozlowski wrote:
> EXTERNAL EMAIL
> 
> On Thu, Mar 19, 2026 at 06:17:21PM +0800, Jun Guo wrote:
>> Update the DMA-350 DT binding to match the current driver behavior.
>>
>> Allow both:
>> - "arm,dma-350" as the generic compatible, and
>> - "cix,sky1-dma-350", "arm,dma-350" for SoC-specific fallback usage.
>>
>> Also document interrupt topology variants supported by hardware
>> integration:
>> - one combined interrupt for all channels, or
>> - one interrupt per channel (up to 8 channels).
>>
>> This patch is Assisted-by: Cursor: GPT-5.3 Codex.
> 
> Wrong tag, please read carefully the guideline before using LLM tools.
Okay. I will temporarily disregard the check patch warnings in the next 
version and correct the format of the AI-generated tag.

> 
>>
>> Signed-off-by: Jun Guo <jun.guo at cixtech.com>
>> Link: https://lore.kernel.org/r/20251216123026.3519923-2-jun.guo@cixtech.com
> 
> What does this express? Changelog link? Then keep it in the changelog
> --- part.
Okay, I'll address this in the next version of the patch.

> 
> 
>> ---
>>   .../devicetree/bindings/dma/arm,dma-350.yaml  | 31 +++++++++++++------
>>   1 file changed, 21 insertions(+), 10 deletions(-)
>>
>> diff --git a/Documentation/devicetree/bindings/dma/arm,dma-350.yaml b/Documentation/devicetree/bindings/dma/arm,dma-350.yaml
>> index 429f682f15d8..3639ce0d5054 100644
>> --- a/Documentation/devicetree/bindings/dma/arm,dma-350.yaml
>> +++ b/Documentation/devicetree/bindings/dma/arm,dma-350.yaml
>> @@ -14,7 +14,11 @@ allOf:
>>
>>   properties:
>>     compatible:
>> -    const: arm,dma-350
>> +    oneOf:
>> +      - const: arm,dma-350
>> +      - items:
>> +          - const: cix,sky1-dma-350
>> +          - const: arm,dma-350
>>
>>     reg:
>>       items:
>> @@ -22,15 +26,22 @@ 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
>> +    description: |
>> +      The DMA controller may be configured with separate interrupts for each channel,
>> +      or with a single combined interrupt for all channels, depending on the SoC integration.
> 
> And more important - you must review the LLM microslop output before
> posting and adjust it to Linux kernel coding style. Don't send
> unredacted tool output.
> 
Actually, this part of the description was not AI-generated. However, 
I’d like to confirm the issue you mentioned: are you saying that this 
description is written too verbosely?
Then, do you think there are still issues with the revised version?
   interrupts:
     minItems: 1
     maxItems: 8
     description:
       Either one interrupt per channel (8 interrupts), or one
       combined interrupt for all channels.

> Best regards,
> Krzysztof
>