diff --git a/dts/bindings/serial/st,stm32-uart-base.yaml b/dts/bindings/serial/st,stm32-uart-base.yaml
index 00177aed2c4..9c9e0ce22eb 100644
--- a/dts/bindings/serial/st,stm32-uart-base.yaml
+++ b/dts/bindings/serial/st,stm32-uart-base.yaml
@@ -25,6 +25,12 @@ properties:
         only TX pin is used afterwards and should be configured.
         RX/TX conflicts must be handled on user side.
 
+    tx-rx-swap:
+      type: boolean
+      required: false
+      description:
+        Swap the TX and RX pins. Used in case of a cross wired connection.
+
     tx-invert:
       type: boolean
       required: false