diff --git a/Documentation/devicetree/bindings/spi/spi-cadence.yaml b/Documentation/devicetree/bindings/spi/spi-cadence.yaml
index b7552739b554..9eda7f0d2869 100644
--- a/Documentation/devicetree/bindings/spi/spi-cadence.yaml
+++ b/Documentation/devicetree/bindings/spi/spi-cadence.yaml
@@ -49,6 +49,9 @@ properties:
     enum: [ 0, 1 ]
     default: 0
 
+  power-domains:
+    maxItems: 1
+
 required:
   - compatible
   - reg