dt-bindings: dma: allwinner,sun50i-a64-dma: Add R40 compatible

R40 has DMA engine which is basically the same as that in A64, with only
known difference being number of request sources and number of channels.

Add compatible for it.

Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://lore.kernel.org/r/20200825100030.1145356-2-jernej.skrabec@siol.net

diff --git a/Documentation/devicetree/bindings/dma/allwinner,sun50i-a64-dma.yaml b/Documentation/devicetree/bindings/dma/allwinner,sun50i-a64-dma.yaml
index 9e53472..372679d 100644 (file)
--- a/Documentation/devicetree/bindings/dma/allwinner,sun50i-a64-dma.yaml
+++ b/Documentation/devicetree/bindings/dma/allwinner,sun50i-a64-dma.yaml
@@ -19,9 +19,12 @@ properties:
     description: The cell is the request line number.
 
   compatible:
-    enum:
-      - allwinner,sun50i-a64-dma
-      - allwinner,sun50i-h6-dma
+    oneOf:
+      - const: allwinner,sun50i-a64-dma
+      - const: allwinner,sun50i-h6-dma
+      - items:
+          - const: allwinner,sun8i-r40-dma
+          - const: allwinner,sun50i-a64-dma
 
   reg:
     maxItems: 1