Documentation/devicetree/bindings/soc/rockchip/grf.txt

   1 * Rockchip General Register Files (GRF)
   2
   3 The general register file will be used to do static set by software, which
   4 is composed of many registers for system control.
   5
   6 From RK3368 SoCs, the GRF is divided into two sections,
   7 - GRF, used for general non-secure system,
   8 - PMUGRF, used for always on system
   9
  10 Required Properties:
  11
  12 - compatible: GRF should be one of the followings
  13    - "rockchip,rk3066-grf", "syscon": for rk3066
  14    - "rockchip,rk3188-grf", "syscon": for rk3188
  15    - "rockchip,rk3228-grf", "syscon": for rk3228
  16    - "rockchip,rk3288-grf", "syscon": for rk3288
  17    - "rockchip,rk3328-grf", "syscon": for rk3328
  18    - "rockchip,rk3368-grf", "syscon": for rk3368
  19    - "rockchip,rk3399-grf", "syscon": for rk3399
  20 - compatible: PMUGRF should be one of the followings
  21    - "rockchip,rk3368-pmugrf", "syscon": for rk3368
  22    - "rockchip,rk3399-pmugrf", "syscon": for rk3399
  23 - reg: physical base address of the controller and length of memory mapped
  24   region.
  25
  26 Example: GRF and PMUGRF of RK3399 SoCs
  27
  28         pmugrf: syscon@ff320000 {
  29                 compatible = "rockchip,rk3399-pmugrf", "syscon";
  30                 reg = <0x0 0xff320000 0x0 0x1000>;
  31         };
  32
  33         grf: syscon@ff770000 {
  34                 compatible = "rockchip,rk3399-grf", "syscon";
  35                 reg = <0x0 0xff770000 0x0 0x10000>;
  36         };