Documentation/devicetree/bindings/usb/usb3503.txt

   1 SMSC USB3503 High-Speed Hub Controller
   2
   3 Required properties:
   4 - compatible: Should be "smsc,usb3503" or "smsc,usb3503a".
   5
   6 Optional properties:
   7 - reg: Specifies the i2c slave address, it is required and should be 0x08
   8        if I2C is used.
   9 - connect-gpios: Should specify GPIO for connect.
  10 - disabled-ports: Should specify the ports unused.
  11         '1' or '2' or '3' are available for this property to describe the port
  12         number. 1~3 property values are possible to be described.
  13         Do not describe this property if all ports have to be enabled.
  14 - intn-gpios: Should specify GPIO for interrupt.
  15 - reset-gpios: Should specify GPIO for reset.
  16 - initial-mode: Should specify initial mode.
  17                 (1 for HUB mode, 2 for STANDBY mode)
  18 - refclk: Clock used for driving REFCLK signal (optional, if not provided
  19         the driver assumes that clock signal is always available, its
  20         rate is specified by REF_SEL pins and a value from the primary
  21         reference clock frequencies table is used). Use clocks and
  22         clock-names in order to assign it
  23 - refclk-frequency: Frequency of the REFCLK signal as defined by REF_SEL
  24         pins (optional, if not provided, driver will not set rate of the
  25         REFCLK signal and assume that a value from the primary reference
  26         clock frequencies table is used)
  27
  28 Examples:
  29         usb3503@08 {
  30                 compatible = "smsc,usb3503";
  31                 reg = <0x08>;
  32                 connect-gpios = <&gpx3 0 1>;
  33                 disabled-ports = <2 3>;
  34                 intn-gpios = <&gpx3 4 1>;
  35                 reset-gpios = <&gpx3 5 1>;
  36                 initial-mode = <1>;
  37                 clocks = <&clks 80>;
  38                 clock-names = "refclk";
  39         };