diff --git a/Documentation/devicetree/bindings/pci/loongson.yaml b/Documentation/devicetree/bindings/pci/loongson.yaml
index e5bba63aa947..26e77218b901 100644
--- a/Documentation/devicetree/bindings/pci/loongson.yaml
+++ b/Documentation/devicetree/bindings/pci/loongson.yaml
@@ -32,6 +32,8 @@ properties:
     minItems: 1
     maxItems: 3
 
+  msi-parent: true
+
 required:
   - compatible
   - reg