diff --git a/Documentation/devicetree/bindings/mfd/ti,am3359-tscadc.yaml b/Documentation/devicetree/bindings/mfd/ti,am3359-tscadc.yaml
index 34bf6a01436f..23a63265be3c 100644
--- a/Documentation/devicetree/bindings/mfd/ti,am3359-tscadc.yaml
+++ b/Documentation/devicetree/bindings/mfd/ti,am3359-tscadc.yaml
@@ -52,6 +52,9 @@ properties:
     type: object
     description: Magnetic reader
 
+  power-domains:
+    maxItems: 1
+
 required:
   - compatible
   - reg