diff --git a/Documentation/devicetree/bindings/arm/fsl.yaml b/Documentation/devicetree/bindings/arm/fsl.yaml
index f08d77b4a1f0..0b595b26061f 100644
--- a/Documentation/devicetree/bindings/arm/fsl.yaml
+++ b/Documentation/devicetree/bindings/arm/fsl.yaml
@@ -899,6 +899,7 @@ properties:
           - enum:
               - fsl,ls1021a-moxa-uc-8410a
               - fsl,ls1021a-qds
+              - fsl,ls1021a-tsn
               - fsl,ls1021a-twr
           - const: fsl,ls1021a