diff --git a/Documentation/devicetree/bindings/vendor-prefixes.yaml b/Documentation/devicetree/bindings/vendor-prefixes.yaml
index a70ce43b3dc0..3761346045e1 100644
--- a/Documentation/devicetree/bindings/vendor-prefixes.yaml
+++ b/Documentation/devicetree/bindings/vendor-prefixes.yaml
@@ -1476,6 +1476,8 @@ patternProperties:
     description: Terasic Inc.
   "^tesla,.*":
     description: Tesla, Inc.
+  "^test,.*":
+    description: Reserved for use by tests. For example, KUnit.
   "^tfc,.*":
     description: Three Five Corp
   "^thead,.*":