xref: /OK3568_Linux_fs/kernel/Documentation/devicetree/bindings/phy/bcm-ns-usb2-phy.txt (revision 4882a59341e53eb6f0b4789bf948001014eff981)
1*4882a593SmuzhiyunDriver for Broadcom Northstar USB 2.0 PHY
2*4882a593Smuzhiyun
3*4882a593SmuzhiyunRequired properties:
4*4882a593Smuzhiyun- compatible: brcm,ns-usb2-phy
5*4882a593Smuzhiyun- reg: iomem address range of DMU (Device Management Unit)
6*4882a593Smuzhiyun- reg-names: "dmu", the only needed & supported reg right now
7*4882a593Smuzhiyun- clocks: USB PHY reference clock
8*4882a593Smuzhiyun- clock-names: "phy-ref-clk", the only needed & supported clock right now
9*4882a593Smuzhiyun
10*4882a593SmuzhiyunTo initialize USB 2.0 PHY driver needs to setup PLL correctly. To do this it
11*4882a593Smuzhiyunrequires passing phandle to the USB PHY reference clock.
12*4882a593Smuzhiyun
13*4882a593SmuzhiyunExample:
14*4882a593Smuzhiyun	usb2-phy {
15*4882a593Smuzhiyun		compatible = "brcm,ns-usb2-phy";
16*4882a593Smuzhiyun		reg = <0x1800c000 0x1000>;
17*4882a593Smuzhiyun		reg-names = "dmu";
18*4882a593Smuzhiyun		#phy-cells = <0>;
19*4882a593Smuzhiyun		clocks = <&genpll BCM_NSP_GENPLL_USB_PHY_REF_CLK>;
20*4882a593Smuzhiyun		clock-names = "phy-ref-clk";
21*4882a593Smuzhiyun	};
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