GNU Linux-libre 4.14.266-gnu1
[releases.git] / Documentation / devicetree / bindings / usb / pxa-usb.txt
1 PXA USB controllers
2
3 OHCI
4
5 Required properties:
6  - compatible: Should be "marvell,pxa-ohci" for USB controllers
7    used in host mode.
8
9 Optional properties:
10  - "marvell,enable-port1", "marvell,enable-port2", "marvell,enable-port3"
11    If present, enables the appropriate USB port of the controller.
12  - "marvell,port-mode" selects the mode of the ports:
13         1 = PMM_NPS_MODE
14         2 = PMM_GLOBAL_MODE
15         3 = PMM_PERPORT_MODE
16  - "marvell,power-sense-low" - power sense pin is low-active.
17  - "marvell,power-control-low" - power control pin is low-active.
18  - "marvell,no-oc-protection" - disable over-current protection.
19  - "marvell,oc-mode-perport" - enable per-port over-current protection.
20  - "marvell,power_on_delay" Power On to Power Good time - in ms.
21
22 Example:
23
24         usb0: ohci@4c000000 {
25                 compatible = "marvell,pxa-ohci", "usb-ohci";
26                 reg = <0x4c000000 0x100000>;
27                 interrupts = <18>;
28                 marvell,enable-port1;
29                 marvell,port-mode = <2>; /* PMM_GLOBAL_MODE */
30         };
31
32 UDC
33
34 Required properties:
35  - compatible: Should be "marvell,pxa270-udc" for USB controllers
36    used in device mode.
37  - reg: usb device MMIO address space
38  - interrupts: single interrupt generated by the UDC IP
39  - clocks: input clock of the UDC IP (see clock-bindings.txt)
40
41 Optional properties:
42  - gpios:
43    - gpio activated to control the USB D+ pullup (see gpio.txt)
44
45 Example:
46
47                 pxa27x_udc: udc@40600000 {
48                         compatible = "marvell,pxa270-udc";
49                         reg = <0x40600000 0x10000>;
50                         interrupts = <11>;
51                         clocks = <&pxa2xx_clks 11>;
52                         gpios = <&gpio 22 GPIO_ACTIVE_LOW>;
53                 };