diff --git a/Documentation/devicetree/bindings/arm/rockchip.yaml b/Documentation/devicetree/bindings/arm/rockchip.yaml
index 99bd5e2c76a0..a4ae51d0a839 100644
--- a/Documentation/devicetree/bindings/arm/rockchip.yaml
+++ b/Documentation/devicetree/bindings/arm/rockchip.yaml
@@ -700,6 +700,11 @@ properties:
               - powkiddy,x55
           - const: rockchip,rk3566
 
+      - description: Protonic MECSBC board
+        items:
+          - const: prt,mecsbc
+          - const: rockchip,rk3568
+
       - description: QNAP TS-433-4G 4-Bay NAS
         items:
           - const: qnap,ts433