linux/Documentation/devicetree/bindings/usb/exynos-usb.txt
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   1Samsung Exynos SoC USB controller
   2
   3The USB devices interface with USB controllers on Exynos SOCs.
   4The device node has following properties.
   5
   6EHCI
   7Required properties:
   8 - compatible: should be "samsung,exynos4210-ehci" for USB 2.0
   9   EHCI controller in host mode.
  10 - reg: physical base address of the controller and length of memory mapped
  11   region.
  12 - interrupts: interrupt number to the cpu.
  13 - clocks: from common clock binding: handle to usb clock.
  14 - clock-names: from common clock binding: Shall be "usbhost".
  15
  16Optional properties:
  17 - samsung,vbus-gpio:  if present, specifies the GPIO that
  18   needs to be pulled up for the bus to be powered.
  19
  20Example:
  21
  22        usb@12110000 {
  23                compatible = "samsung,exynos4210-ehci";
  24                reg = <0x12110000 0x100>;
  25                interrupts = <0 71 0>;
  26                samsung,vbus-gpio = <&gpx2 6 1 3 3>;
  27
  28                clocks = <&clock 285>;
  29                clock-names = "usbhost";
  30        };
  31
  32OHCI
  33Required properties:
  34 - compatible: should be "samsung,exynos4210-ohci" for USB 2.0
  35   OHCI companion controller in host mode.
  36 - reg: physical base address of the controller and length of memory mapped
  37   region.
  38 - interrupts: interrupt number to the cpu.
  39 - clocks: from common clock binding: handle to usb clock.
  40 - clock-names: from common clock binding: Shall be "usbhost".
  41
  42Example:
  43        usb@12120000 {
  44                compatible = "samsung,exynos4210-ohci";
  45                reg = <0x12120000 0x100>;
  46                interrupts = <0 71 0>;
  47
  48                clocks = <&clock 285>;
  49                clock-names = "usbhost";
  50        };
  51
  52DWC3
  53Required properties:
  54 - compatible: should be "samsung,exynos5250-dwusb3" for USB 3.0 DWC3
  55               controller.
  56 - #address-cells, #size-cells : should be '1' if the device has sub-nodes
  57                                 with 'reg' property.
  58 - ranges: allows valid 1:1 translation between child's address space and
  59           parent's address space
  60 - clocks: Clock IDs array as required by the controller.
  61 - clock-names: names of clocks correseponding to IDs in the clock property
  62
  63Sub-nodes:
  64The dwc3 core should be added as subnode to Exynos dwc3 glue.
  65- dwc3 :
  66   The binding details of dwc3 can be found in:
  67   Documentation/devicetree/bindings/usb/dwc3.txt
  68
  69Example:
  70        usb@12000000 {
  71                compatible = "samsung,exynos5250-dwusb3";
  72                clocks = <&clock 286>;
  73                clock-names = "usbdrd30";
  74                #address-cells = <1>;
  75                #size-cells = <1>;
  76                ranges;
  77
  78                dwc3 {
  79                        compatible = "synopsys,dwc3";
  80                        reg = <0x12000000 0x10000>;
  81                        interrupts = <0 72 0>;
  82                        usb-phy = <&usb2_phy &usb3_phy>;
  83                };
  84        };
  85