Linux-libre 5.4.48-gnu
[librecmc/linux-libre.git] / Documentation / devicetree / bindings / phy / bcm-ns-usb2-phy.txt
1 Driver for Broadcom Northstar USB 2.0 PHY
2
3 Required properties:
4 - compatible: brcm,ns-usb2-phy
5 - reg: iomem address range of DMU (Device Management Unit)
6 - reg-names: "dmu", the only needed & supported reg right now
7 - clocks: USB PHY reference clock
8 - clock-names: "phy-ref-clk", the only needed & supported clock right now
9
10 To initialize USB 2.0 PHY driver needs to setup PLL correctly. To do this it
11 requires passing phandle to the USB PHY reference clock.
12
13 Example:
14         usb2-phy {
15                 compatible = "brcm,ns-usb2-phy";
16                 reg = <0x1800c000 0x1000>;
17                 reg-names = "dmu";
18                 #phy-cells = <0>;
19                 clocks = <&genpll BCM_NSP_GENPLL_USB_PHY_REF_CLK>;
20                 clock-names = "phy-ref-clk";
21         };