[PATCH v1 3/5] dt-bindings: dma: arm,dma-350: Document dma-channel-mask

[Jelly Jia]

Some DMA-350 integrations reserve channels for firmware or another
processor. Allow the standard dma-channel-mask property so firmware can
describe which channels Linux may use.

DMA-350 implements at most eight channels, so one 32-bit cell is enough;
limit the property to a single cell.

Signed-off-by: Jelly Jia <Jelly.Jia at cixtech.com>
---
 Documentation/devicetree/bindings/dma/arm,dma-350.yaml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/dma/arm,dma-350.yaml b/Documentation/devicetree/bindings/dma/arm,dma-350.yaml
index 43279878207c..98e7bb651210 100644
--- a/Documentation/devicetree/bindings/dma/arm,dma-350.yaml
+++ b/Documentation/devicetree/bindings/dma/arm,dma-350.yaml
@@ -43,6 +43,9 @@ properties:
     description:
       Optional reset line, where the integration exposes one.
 
+  dma-channel-mask:
+    maxItems: 1
+
 required:
   - compatible
   - reg
-- 
2.54.0