linux-kernel - Re: [PATCH 5/8] dt-bindings: dma: fsl-edma: add nxp,s32g2-edma compatible string

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Message-ID: <Z2BS420NSz6u+Ir6@lizhi-Precision-Tower-5810>
Date: Mon, 16 Dec 2024 11:18:43 -0500
From: Frank Li <Frank.li@....com>
To: Larisa Grigore <larisa.grigore@....nxp.com>
Cc: dmaengine@...r.kernel.org, imx@...ts.linux.dev,
	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 5/8] dt-bindings: dma: fsl-edma: add nxp,s32g2-edma
 compatible string

On Mon, Dec 16, 2024 at 09:58:15AM +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
> +    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
>