diff --git a/Documentation/devicetree/bindings/soc/rockchip/grf.txt b/Documentation/devicetree/bindings/soc/rockchip/grf.txt
index 9616ca810c12..8f50ae5e2ebc 100644
--- a/Documentation/devicetree/bindings/soc/rockchip/grf.txt
+++ b/Documentation/devicetree/bindings/soc/rockchip/grf.txt
@@ -26,6 +26,7 @@ Required Properties:
 - compatible: COREGRF should be one of the following
    - "rockchip,rk1808-coregrf", "syscon": for rk1808
 - compatible: PMUGRF should be one of the following:
+   - "rockchip,rv1108-pmugrf", "syscon": for rv1108
    - "rockchip,rk3368-pmugrf", "syscon": for rk3368
    - "rockchip,rk3399-pmugrf", "syscon": for rk3399
 - compatible: SGRF should be one of the following