diff --git a/Documentation/devicetree/bindings/iio/adc/nxp,lpc3220-adc.yaml b/Documentation/devicetree/bindings/iio/adc/nxp,lpc3220-adc.yaml
index 2c5032be83bd..fd815ab30df1 100644
--- a/Documentation/devicetree/bindings/iio/adc/nxp,lpc3220-adc.yaml
+++ b/Documentation/devicetree/bindings/iio/adc/nxp,lpc3220-adc.yaml
@@ -22,6 +22,9 @@ properties:
   interrupts:
     maxItems: 1
 
+  clocks:
+    maxItems: 1
+
   vref-supply: true
 
   "#io-channel-cells":