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-rw-r--r--Documentation/devicetree/bindings/soc/rockchip/grf.txt4
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/soc/rockchip/grf.txt b/Documentation/devicetree/bindings/soc/rockchip/grf.txt
index a0685c209218..13ec0992de0f 100644
--- a/Documentation/devicetree/bindings/soc/rockchip/grf.txt
+++ b/Documentation/devicetree/bindings/soc/rockchip/grf.txt
@@ -8,6 +8,8 @@ From RK3368 SoCs, the GRF is divided into two sections,
- SGRF, used for general secure system,
- PMUGRF, used for always on system
+On RK3328 SoCs, the GRF adds a section for USB2PHYGRF,
+
Required Properties:
- compatible: GRF should be one of the following:
@@ -23,6 +25,8 @@ Required Properties:
- "rockchip,rk3399-pmugrf", "syscon": for rk3399
- compatible: SGRF should be one of the following
- "rockchip,rk3288-sgrf", "syscon": for rk3288
+- compatible: USB2PHYGRF should be one of the followings
+ - "rockchip,rk3328-usb2phy-grf", "syscon": for rk3328
- reg: physical base address of the controller and length of memory mapped
region.