diff --git a/Documentation/devicetree/bindings/pci/snps,dw-pcie.yaml b/Documentation/devicetree/bindings/pci/snps,dw-pcie.yaml
index 205326fb2d75..1117a86fb6f7 100644
--- a/Documentation/devicetree/bindings/pci/snps,dw-pcie.yaml
+++ b/Documentation/devicetree/bindings/pci/snps,dw-pcie.yaml
@@ -113,6 +113,8 @@ properties:
               enum: [ smu, mpu ]
             - description: Tegra234 aperture
               enum: [ ecam ]
+            - description: AMD MDB PCIe SLCR region
+              const: slcr
     allOf:
       - contains:
           const: dbi