diff mbox series

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

Message ID 20241219102415.1208328-4-larisa.grigore@oss.nxp.com (mailing list archive)
State Accepted
Commit 57eeb0a566a82621ab731b0372a5a2894b0d572e
Headers show
Series Add eDMAv3 support for S32G2/S32G3 SoCs | expand

Commit Message

Larisa Ileana Grigore Dec. 19, 2024, 10:24 a.m. UTC
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@oss.nxp.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
---
 .../devicetree/bindings/dma/fsl,edma.yaml     | 34 +++++++++++++++++++
 1 file changed, 34 insertions(+)

Comments

Conor Dooley Dec. 19, 2024, 7:46 p.m. UTC | #1
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@oss.nxp.com>
> Reviewed-by: Frank Li <Frank.Li@nxp.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@microchip.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
>
diff mbox series

Patch

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: