diff --git a/Documentation/devicetree/bindings/dma/stericsson,dma40.yaml b/Documentation/devicetree/bindings/dma/stericsson,dma40.yaml
index d8f92838f4c9..81b83603ea79 100644
--- a/Documentation/devicetree/bindings/dma/stericsson,dma40.yaml
+++ b/Documentation/devicetree/bindings/dma/stericsson,dma40.yaml
@@ -140,8 +140,22 @@ properties:
       - description: LCPA (Logical Channel Parameter Address) memory.
       - description: LCLA (Logical Channel Link base Address) memory.
 
+  disabled-channels:
+    $ref: /schemas/types.yaml#/definitions/uint32-array
+    minItems: 1
+    maxItems: 31
+    uniqueItems: true
+    items:
+      maximum: 31
+    description: Physical channels that cannot be used by the DMA engine.
+
   memcpy-channels:
     $ref: /schemas/types.yaml#/definitions/uint32-array
+    minItems: 1
+    maxItems: 8
+    uniqueItems: true
+    items:
+      maximum: 63
     description: Array of u32 elements indicating which channels on the DMA
       engine are eligible for memcpy transfers