Add compatible string for pipe-phy GRF found on RK3528 SoC, which
controls misc settings for the integrated naneng-combphy.

Signed-off-by: Yao Zi <ziyao@disroot.org>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
---
 Documentation/devicetree/bindings/soc/rockchip/grf.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/soc/rockchip/grf.yaml b/Documentation/devicetree/bindings/soc/rockchip/grf.yaml
index ccdcc889ba8e..8ddd963838f5 100644
--- a/Documentation/devicetree/bindings/soc/rockchip/grf.yaml
+++ b/Documentation/devicetree/bindings/soc/rockchip/grf.yaml
@@ -16,6 +16,7 @@ properties:
           - enum:
               - rockchip,rk3288-sgrf
               - rockchip,rk3528-ioc-grf
+              - rockchip,rk3528-pipe-phy-grf
               - rockchip,rk3528-vo-grf
               - rockchip,rk3528-vpu-grf
               - rockchip,rk3562-ioc-grf
-- 
2.49.0