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Diffstat (limited to 'Documentation/devicetree/bindings/mips/lantiq/rcu.txt')
-rw-r--r-- | Documentation/devicetree/bindings/mips/lantiq/rcu.txt | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/mips/lantiq/rcu.txt b/Documentation/devicetree/bindings/mips/lantiq/rcu.txt new file mode 100644 index 000000000000..a086f1e1cdd7 --- /dev/null +++ b/Documentation/devicetree/bindings/mips/lantiq/rcu.txt @@ -0,0 +1,89 @@ +Lantiq XWAY SoC RCU binding +=========================== + +This binding describes the RCU (reset controller unit) multifunction device, +where each sub-device has it's own set of registers. + +The RCU register range is used for multiple purposes. Mostly one device +uses one or multiple register exclusively, but for some registers some +bits are for one driver and some other bits are for a different driver. +With this patch all accesses to the RCU registers will go through +syscon. + + +------------------------------------------------------------------------------- +Required properties: +- compatible : The first and second values must be: + "lantiq,xrx200-rcu", "simple-mfd", "syscon" +- reg : The address and length of the system control registers + + +------------------------------------------------------------------------------- +Example of the RCU bindings on a xRX200 SoC: + rcu0: rcu@203000 { + compatible = "lantiq,xrx200-rcu", "simple-mfd", "syscon"; + reg = <0x203000 0x100>; + ranges = <0x0 0x203000 0x100>; + big-endian; + + gphy0: gphy@20 { + compatible = "lantiq,xrx200a2x-gphy"; + reg = <0x20 0x4>; + + resets = <&reset0 31 30>, <&reset1 7 7>; + reset-names = "gphy", "gphy2"; + lantiq,gphy-mode = <GPHY_MODE_GE>; + }; + + gphy1: gphy@68 { + compatible = "lantiq,xrx200a2x-gphy"; + reg = <0x68 0x4>; + + resets = <&reset0 29 28>, <&reset1 6 6>; + reset-names = "gphy", "gphy2"; + lantiq,gphy-mode = <GPHY_MODE_GE>; + }; + + reset0: reset-controller@10 { + compatible = "lantiq,xrx200-reset"; + reg = <0x10 4>, <0x14 4>; + + #reset-cells = <2>; + }; + + reset1: reset-controller@48 { + compatible = "lantiq,xrx200-reset"; + reg = <0x48 4>, <0x24 4>; + + #reset-cells = <2>; + }; + + usb_phy0: usb2-phy@18 { + compatible = "lantiq,xrx200-usb2-phy"; + reg = <0x18 4>, <0x38 4>; + status = "disabled"; + + resets = <&reset1 4 4>, <&reset0 4 4>; + reset-names = "phy", "ctrl"; + #phy-cells = <0>; + }; + + usb_phy1: usb2-phy@34 { + compatible = "lantiq,xrx200-usb2-phy"; + reg = <0x34 4>, <0x3C 4>; + status = "disabled"; + + resets = <&reset1 5 4>, <&reset0 4 4>; + reset-names = "phy", "ctrl"; + #phy-cells = <0>; + }; + + reboot@10 { + compatible = "syscon-reboot"; + reg = <0x10 4>; + + regmap = <&rcu0>; + offset = <0x10>; + mask = <0x40000000>; + }; + }; |