diff --git a/Documentation/devicetree/bindings/iio/dac/adi,ad7293.yaml b/Documentation/devicetree/bindings/iio/dac/adi,ad7293.yaml
index 5ee80bf6aa11..f994c1ef6d41 100644
--- a/Documentation/devicetree/bindings/iio/dac/adi,ad7293.yaml
+++ b/Documentation/devicetree/bindings/iio/dac/adi,ad7293.yaml
@@ -27,6 +27,8 @@ properties:
 
   vdrive-supply: true
 
+  vrefin-supply: true
+
   reset-gpios:
     maxItems: 1