diff --git a/Documentation/devicetree/bindings/display/bridge/ti,tdp158.yaml b/Documentation/devicetree/bindings/display/bridge/ti,tdp158.yaml
index 1c522f72c4ba..721da44054e1 100644
--- a/Documentation/devicetree/bindings/display/bridge/ti,tdp158.yaml
+++ b/Documentation/devicetree/bindings/display/bridge/ti,tdp158.yaml
@@ -17,6 +17,7 @@ properties:
 # The reg property is required if and only if the device is connected
 # to an I2C bus. In pin strap mode, reg must not be specified.
   reg:
+    maxItems: 1
     description: I2C address of the device
 
 # Pin 36 = Operation Enable / Reset Pin