linux-kernel - Re: [PATCH v3 3/5] dt-bindings: dma: fsl-edma: add nxp,s32g2-edma compatible string

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Message-ID: <20241219-flirt-gab-dbacc809cca4@spud>
Date: Thu, 19 Dec 2024 19:46:21 +0000
From: Conor Dooley <conor@...nel.org>
To: Larisa Grigore <larisa.grigore@....nxp.com>
Cc: Frank Li <Frank.Li@....com>, Vinod Koul <vkoul@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>, Peng Fan <peng.fan@....com>,
	imx@...ts.linux.dev, dmaengine@...r.kernel.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	s32@....com, Christophe Lizzi <clizzi@...hat.com>,
	Alberto Ruiz <aruizrui@...hat.com>,
	Enric Balletbo <eballetb@...hat.com>
Subject: Re: [PATCH v3 3/5] dt-bindings: dma: fsl-edma: add nxp,s32g2-edma
 compatible string

On Thu, Dec 19, 2024 at 12:24:12PM +0200, Larisa Grigore wrote:
> Introduce the compatible strings 'nxp,s32g2-edma' and 'nxp,s32g3-edma' to
> enable the support for the eDMAv3 present on S32G2/S32G3 platforms.
> 
> The S32G2/S32G3 eDMA architecture features 32 DMA channels. Each of the
> two eDMA instances is integrated with two DMAMUX blocks.
> 
> Another particularity of these SoCs is that the interrupts are shared
> between channels in the following way:
> - DMA Channels 0-15 share the 'tx-0-15' interrupt
> - DMA Channels 16-31 share the 'tx-16-31' interrupt
> - all channels share the 'err' interrupt
> 
> Signed-off-by: Larisa Grigore <larisa.grigore@....nxp.com>
> Reviewed-by: Frank Li <Frank.Li@....com>
> ---
>  .../devicetree/bindings/dma/fsl,edma.yaml     | 34 +++++++++++++++++++
>  1 file changed, 34 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/dma/fsl,edma.yaml b/Documentation/devicetree/bindings/dma/fsl,edma.yaml
> index d54140f18d34..4f925469533e 100644
> --- a/Documentation/devicetree/bindings/dma/fsl,edma.yaml
> +++ b/Documentation/devicetree/bindings/dma/fsl,edma.yaml
> @@ -26,9 +26,13 @@ properties:
>            - fsl,imx93-edma3
>            - fsl,imx93-edma4
>            - fsl,imx95-edma5
> +          - nxp,s32g2-edma
>        - items:
>            - const: fsl,ls1028a-edma
>            - const: fsl,vf610-edma
> +      - items:
> +          - const: nxp,s32g3-edma
> +          - const: nxp,s32g2-edma
>  
>    reg:
>      minItems: 1
> @@ -221,6 +225,36 @@ allOf:
>        properties:
>          power-domains: false
>  
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            const: nxp,s32g2-edma

Your property ordering below is a bit odd, but it matches what exists
currently so
Acked-by: Conor Dooley <conor.dooley@...rochip.com>

Cheers,
Conor.

> +    then:
> +      properties:
> +        clocks:
> +          minItems: 2
> +          maxItems: 2
> +        clock-names:
> +          items:
> +            - const: dmamux0
> +            - const: dmamux1
> +        interrupts:
> +          minItems: 3
> +          maxItems: 3
> +        interrupt-names:
> +          items:
> +            - const: tx-0-15
> +            - const: tx-16-31
> +            - const: err
> +        reg:
> +          minItems: 3
> +          maxItems: 3
> +        "#dma-cells":
> +          const: 2
> +        dma-channels:
> +          const: 32
> +
>  unevaluatedProperties: false
>  
>  examples:
> -- 
> 2.47.0
> 

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