diff --git a/Documentation/devicetree/bindings/dma/arm,pl330.yaml b/Documentation/devicetree/bindings/dma/arm,pl330.yaml
index 2bec69b308f8665d64d86af4d9a28557022cfda0..4a3dd6f5309b1fa4fca1b0dbe57122b9aa8fabf2 100644
--- a/Documentation/devicetree/bindings/dma/arm,pl330.yaml
+++ b/Documentation/devicetree/bindings/dma/arm,pl330.yaml
@@ -55,6 +55,12 @@ properties:
 
   dma-coherent: true
 
+  iommus:
+    minItems: 1
+    maxItems: 9
+    description: Up to 1 IOMMU entry per DMA channel for writes and 1
+      IOMMU entry for reads.
+
   power-domains:
     maxItems: 1