diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad4851.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad4851.yaml
index c6676d91b4e6..b107322e0ea3 100644
--- a/Documentation/devicetree/bindings/iio/adc/adi,ad4851.yaml
+++ b/Documentation/devicetree/bindings/iio/adc/adi,ad4851.yaml
@@ -69,6 +69,8 @@ properties:
   spi-max-frequency:
     maximum: 25000000
 
+  spi-3wire: true
+
   '#address-cells':
     const: 1