linux/Documentation/devicetree/bindings/net/smsc911x.txt
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   1* Smart Mixed-Signal Connectivity (SMSC) LAN911x/912x Controller
   2
   3Required properties:
   4- compatible : Should be "smsc,lan<model>", "smsc,lan9115"
   5- reg : Address and length of the io space for SMSC LAN
   6- interrupts : Should contain SMSC LAN interrupt line
   7- interrupt-parent : Should be the phandle for the interrupt controller
   8  that services interrupts for this device
   9- phy-mode : String, operation mode of the PHY interface.
  10  Supported values are: "mii", "gmii", "sgmii", "tbi", "rmii",
  11  "rgmii", "rgmii-id", "rgmii-rxid", "rgmii-txid", "rtbi", "smii".
  12
  13Optional properties:
  14- reg-shift : Specify the quantity to shift the register offsets by
  15- reg-io-width : Specify the size (in bytes) of the IO accesses that
  16  should be performed on the device.  Valid value for SMSC LAN is
  17  2 or 4.  If it's omitted or invalid, the size would be 2.
  18- smsc,irq-active-high : Indicates the IRQ polarity is active-high
  19- smsc,irq-push-pull : Indicates the IRQ type is push-pull
  20- smsc,force-internal-phy : Forces SMSC LAN controller to use
  21  internal PHY
  22- smsc,force-external-phy : Forces SMSC LAN controller to use
  23  external PHY
  24- smsc,save-mac-address : Indicates that mac address needs to be saved
  25  before resetting the controller
  26- local-mac-address : 6 bytes, mac address
  27
  28Examples:
  29
  30lan9220@f4000000 {
  31        compatible = "smsc,lan9220", "smsc,lan9115";
  32        reg = <0xf4000000 0x2000000>;
  33        phy-mode = "mii";
  34        interrupt-parent = <&gpio1>;
  35        interrupts = <31>;
  36        reg-io-width = <4>;
  37        smsc,irq-push-pull;
  38};
  39