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

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Message-ID: <20241216075819.2066772-6-larisa.grigore@oss.nxp.com>
Date: Mon, 16 Dec 2024 09:58:15 +0200
From: Larisa Grigore <larisa.grigore@....nxp.com>
To: Frank.Li@....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>,
	Larisa Grigore <larisa.grigore@....nxp.com>
Subject: [PATCH 5/8] dt-bindings: dma: fsl-edma: add nxp,s32g2-edma compatible string

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>
---
 .../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