diff --git a/Documentation/devicetree/bindings/serial/fsl-imx-uart.yaml b/Documentation/devicetree/bindings/serial/fsl-imx-uart.yaml
index 40414247d61a3..83035553044a2 100644
--- a/Documentation/devicetree/bindings/serial/fsl-imx-uart.yaml
+++ b/Documentation/devicetree/bindings/serial/fsl-imx-uart.yaml
@@ -70,6 +70,8 @@ properties:
   interrupts:
     maxItems: 1
 
+  wakeup-source: true
+
   fsl,dte-mode:
     $ref: /schemas/types.yaml#/definitions/flag
     description: |