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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /Documentation/devicetree/bindings/mips/lantiq/rcu.txt
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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+Lantiq XWAY SoC RCU binding
+===========================
+
+This binding describes the RCU (reset controller unit) multifunction device,
+where each sub-device has its 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;
+
+ 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>;
+
+ 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>;
+
+ 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>;
+ };
+ };