1* Rockchip General Register Files (GRF) 2 3The general register file will be used to do static set by software, which 4is composed of many registers for system control. 5 6From RK3368 SoCs, the GRF is divided into two sections, 7- GRF, used for general non-secure system, 8- SGRF, used for general secure system, 9- PMUGRF, used for always on system 10 11On RK3328 SoCs, the GRF adds a section for USB2PHYGRF, 12 13ON RK3308 SoC, the GRF is divided into four sections: 14- GRF, used for general non-secure system, 15- SGRF, used for general secure system, 16- DETECTGRF, used for audio codec system, 17- COREGRF, used for pvtm, 18 19Required Properties: 20 21- compatible: GRF should be one of the following: 22 - "rockchip,px30-grf", "syscon": for px30 23 - "rockchip,rk3036-grf", "syscon": for rk3036 24 - "rockchip,rk3066-grf", "syscon": for rk3066 25 - "rockchip,rk3188-grf", "syscon": for rk3188 26 - "rockchip,rk3228-grf", "syscon": for rk3228 27 - "rockchip,rk3288-grf", "syscon": for rk3288 28 - "rockchip,rk3308-grf", "syscon": for rk3308 29 - "rockchip,rk3328-grf", "syscon": for rk3328 30 - "rockchip,rk3368-grf", "syscon": for rk3368 31 - "rockchip,rk3399-grf", "syscon": for rk3399 32 - "rockchip,rv1108-grf", "syscon": for rv1108 33- compatible: DETECTGRF should be one of the following: 34 - "rockchip,rk3308-detect-grf", "syscon": for rk3308 35- compatilbe: COREGRF should be one of the following: 36 - "rockchip,rk3308-core-grf", "syscon": for rk3308 37- compatible: PMUGRF should be one of the following: 38 - "rockchip,px30-pmugrf", "syscon": for px30 39 - "rockchip,rk3368-pmugrf", "syscon": for rk3368 40 - "rockchip,rk3399-pmugrf", "syscon": for rk3399 41- compatible: SGRF should be one of the following: 42 - "rockchip,rk3288-sgrf", "syscon": for rk3288 43- compatible: USB2PHYGRF should be one of the following: 44 - "rockchip,px30-usb2phy-grf", "syscon": for px30 45 - "rockchip,rk3328-usb2phy-grf", "syscon": for rk3328 46- compatible: USBGRF should be one of the following: 47 - "rockchip,rv1108-usbgrf", "syscon": for rv1108 48- reg: physical base address of the controller and length of memory mapped 49 region. 50 51Example: GRF and PMUGRF of RK3399 SoCs 52 53 pmugrf: syscon@ff320000 { 54 compatible = "rockchip,rk3399-pmugrf", "syscon"; 55 reg = <0x0 0xff320000 0x0 0x1000>; 56 }; 57 58 grf: syscon@ff770000 { 59 compatible = "rockchip,rk3399-grf", "syscon"; 60 reg = <0x0 0xff770000 0x0 0x10000>; 61 }; 62