diff --git a/Documentation/devicetree/bindings/serial/8250.yaml b/Documentation/devicetree/bindings/serial/8250.yaml
index c0e292cdaa6b..204b1724bdf6 100644
--- a/Documentation/devicetree/bindings/serial/8250.yaml
+++ b/Documentation/devicetree/bindings/serial/8250.yaml
@@ -189,6 +189,7 @@ properties:
       offset and bit number to identify how the SIRQ polarity should be
       configured. One possible data source is the LPC/eSPI mode bit. Only
       applicable to aspeed,ast2500-vuart.
+    deprecated: true
 
 required:
   - reg