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1Broadcom USB3 phy binding for northstar plus SoC
2The USB3 phy is internal to the SoC and is accessed using mdio interface.
3
4Required mdio bus properties:
5- reg: Should be 0x0 for SoC internal USB3 phy
6- #address-cells: must be 1
7- #size-cells: must be 0
8
9Required USB3 PHY properties:
10- compatible: should be "brcm,nsp-usb3-phy"
11- reg: USB3 Phy address on SoC internal MDIO bus and it should be 0x10.
12- usb3-ctrl-syscon: handler of syscon node defining physical address
13 of usb3 control register.
14- #phy-cells: must be 0
15
16Required usb3 control properties:
17- compatible: should be "brcm,nsp-usb3-ctrl"
18- reg: offset and length of the control registers
19
20Example:
21
22 mdio@0 {
23 reg = <0x0>;
24 #address-cells = <1>;
25 #size-cells = <0>;
26
27 usb3_phy: usb-phy@10 {
28 compatible = "brcm,nsp-usb3-phy";
29 reg = <0x10>;
30 usb3-ctrl-syscon = <&usb3_ctrl>;
31 #phy-cells = <0>;
32 status = "disabled";
33 };
34 };
35
36 usb3_ctrl: syscon@104408 {
37 compatible = "brcm,nsp-usb3-ctrl", "syscon";
38 reg = <0x104408 0x3fc>;
39 };