1Lantiq XWAY SoC RCU binding 2=========================== 3 4This binding describes the RCU (reset controller unit) multifunction device, 5where each sub-device has its own set of registers. 6 7The RCU register range is used for multiple purposes. Mostly one device 8uses one or multiple register exclusively, but for some registers some 9bits are for one driver and some other bits are for a different driver. 10With this patch all accesses to the RCU registers will go through 11syscon. 12 13 14------------------------------------------------------------------------------- 15Required properties: 16- compatible : The first and second values must be: 17 "lantiq,xrx200-rcu", "simple-mfd", "syscon" 18- reg : The address and length of the system control registers 19 20 21------------------------------------------------------------------------------- 22Example of the RCU bindings on a xRX200 SoC: 23 rcu0: rcu@203000 { 24 compatible = "lantiq,xrx200-rcu", "simple-mfd", "syscon"; 25 reg = <0x203000 0x100>; 26 ranges = <0x0 0x203000 0x100>; 27 big-endian; 28 29 reset0: reset-controller@10 { 30 compatible = "lantiq,xrx200-reset"; 31 reg = <0x10 4>, <0x14 4>; 32 33 #reset-cells = <2>; 34 }; 35 36 reset1: reset-controller@48 { 37 compatible = "lantiq,xrx200-reset"; 38 reg = <0x48 4>, <0x24 4>; 39 40 #reset-cells = <2>; 41 }; 42 43 usb_phy0: usb2-phy@18 { 44 compatible = "lantiq,xrx200-usb2-phy"; 45 reg = <0x18 4>, <0x38 4>; 46 47 resets = <&reset1 4 4>, <&reset0 4 4>; 48 reset-names = "phy", "ctrl"; 49 #phy-cells = <0>; 50 }; 51 52 usb_phy1: usb2-phy@34 { 53 compatible = "lantiq,xrx200-usb2-phy"; 54 reg = <0x34 4>, <0x3C 4>; 55 56 resets = <&reset1 5 4>, <&reset0 4 4>; 57 reset-names = "phy", "ctrl"; 58 #phy-cells = <0>; 59 }; 60 61 reboot@10 { 62 compatible = "syscon-reboot"; 63 reg = <0x10 4>; 64 65 regmap = <&rcu0>; 66 offset = <0x10>; 67 mask = <0x40000000>; 68 }; 69 }; 70