linux-kernel - Re: [PATCH v2 1/3] dt-bindings: dma: snps,dw-axi-dmac: Add reset items

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Message-ID: <1467f7c5-07eb-97db-c6f2-573a4208cc28@linaro.org>
Date:   Wed, 22 Feb 2023 10:17:34 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Walker Chen <walker.chen@...rfivetech.com>,
        Eugeniy Paltsev <Eugeniy.Paltsev@...opsys.com>,
        Vinod Koul <vkoul@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor@...nel.org>,
        Palmer Dabbelt <palmer@...belt.com>,
        Emil Renner Berthing <kernel@...il.dk>,
        Emil Renner Berthing <emil.renner.berthing@...onical.com>
Cc:     dmaengine@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org
Subject: Re: [PATCH v2 1/3] dt-bindings: dma: snps,dw-axi-dmac: Add reset
 items

On 21/02/2023 15:04, Walker Chen wrote:
> This DMA controller needs to be reset before being used on JH7110 SoC,
> so add reset items to support this chip.

There is reset already. The DMA controller is reset already. Your commit
msg and commit subject do not match commit at all.

> 
> Signed-off-by: Walker Chen <walker.chen@...rfivetech.com>
> ---
>  .../devicetree/bindings/dma/snps,dw-axi-dmac.yaml         | 8 +++++++-
>  1 file changed, 7 insertions(+), 1 deletion(-)
> 
> diff --git a/Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml b/Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml
> index ad107a4d3b33..c2247c65a22f 100644
> --- a/Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml
> +++ b/Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml
> @@ -20,6 +20,7 @@ properties:
>      enum:
>        - snps,axi-dma-1.01a
>        - intel,kmb-axi-dma
> +      - starfive,jh7110-axi-dma
>  
>    reg:
>      minItems: 1
> @@ -58,7 +59,12 @@ properties:
>      maximum: 8
>  
>    resets:
> -    maxItems: 1
> +    maxItems: 2

This breaks ABI and all other users. Test your changes before sending.

Best regards,
Krzysztof