Documentation/devicetree/bindings/usb/exynos-usb.txt

   1 Samsung Exynos SoC USB controller
   2
   3 The USB devices interface with USB controllers on Exynos SOCs.
   4 The device node has following properties.
   5
   6 EHCI
   7 Required 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
  16 Optional properties:
  17  - samsung,vbus-gpio:  if present, specifies the GPIO that
  18    needs to be pulled up for the bus to be powered.
  19
  20 Example:
  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
  32 OHCI
  33 Required 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
  42 Example:
  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
  52 DWC3
  53 Required 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
  63 Sub-nodes:
  64 The 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
  69 Example:
  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         };