diff --git a/Documentation/devicetree/bindings/iio/adc/aspeed,ast2600-adc.yaml b/Documentation/devicetree/bindings/iio/adc/aspeed,ast2600-adc.yaml
index 509bfb1007c4..249101b55cf4 100644
--- a/Documentation/devicetree/bindings/iio/adc/aspeed,ast2600-adc.yaml
+++ b/Documentation/devicetree/bindings/iio/adc/aspeed,ast2600-adc.yaml
@@ -44,6 +44,9 @@ properties:
       Input clock used to derive the sample clock. Expected to be the
       SoC's APB clock.
 
+  interrupts:
+    maxItems: 1
+
   resets:
     maxItems: 1