linux-kernel - [PATCH v2 2/2] dt-bindings: dma: fsl-edma: allow 'power-domains' property

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Date: Fri,  1 Mar 2024 16:45:36 -0500
From: Frank Li <Frank.Li@....com>
To: krzysztof.kozlowski@...aro.org
Cc: Frank.Li@....com,
	conor+dt@...nel.org,
	devicetree@...r.kernel.org,
	dmaengine@...r.kernel.org,
	imx@...ts.linux.dev,
	krzysztof.kozlowski+dt@...aro.org,
	linux-kernel@...r.kernel.org,
	peng.fan@....com,
	robh@...nel.org,
	vkoul@...nel.org
Subject: [PATCH v2 2/2] dt-bindings: dma: fsl-edma: allow 'power-domains' property

Allow 'power-domains' property because i.MX8DXL i.MX8QM and i.MX8QXP need
it.

Fixed below DTB_CHECK warning:
  dma-controller@...f0000: Unevaluated properties are not allowed ('power-domains' was unexpected)

Signed-off-by: Frank Li <Frank.Li@....com>
---

Notes:
    Change from v1 to v2
    - using maxitem: 64. Each channel have one power domain. Max 64 dmachannel.
    - add power-domains to 'required' when compatible string is fsl,imx8qm-adma
    or fsl,imx8qm-edma

 .../devicetree/bindings/dma/fsl,edma.yaml         | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/Documentation/devicetree/bindings/dma/fsl,edma.yaml b/Documentation/devicetree/bindings/dma/fsl,edma.yaml
index cf0aa8e6b9ec3..76c1716b8b95c 100644
--- a/Documentation/devicetree/bindings/dma/fsl,edma.yaml
+++ b/Documentation/devicetree/bindings/dma/fsl,edma.yaml
@@ -59,6 +59,10 @@ properties:
     minItems: 1
     maxItems: 2
 
+  power-domains:
+    minItems: 1
+    maxItems: 64
+
   big-endian:
     description: |
       If present registers and hardware scatter/gather descriptors of the
@@ -165,6 +169,17 @@ allOf:
       required:
         - clocks
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - fsl,imx8qm-adma
+              - fsl,imx8qm-edma
+    then:
+      required:
+        - power-domains
+
 unevaluatedProperties: false
 
 examples:
-- 
2.34.1