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[v2,3/6] dt-bindings: dma: fsl-edma: add nxp,s32g2-edma compatible string

Message ID 20241219092045.1161182-4-larisa.grigore@oss.nxp.com (mailing list archive)
State Superseded
Headers show
Series Add eDMAv3 support for S32G2/S32G3 SoCs | expand

Commit Message

Larisa Ileana Grigore Dec. 19, 2024, 9:18 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(+)
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: