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Merge up to 2.6.27-rc8
Merge of 2.6.x-xfs-melb:linux:32254b by kenmcd.

* MDIO IO device

The MDIO is a bus to which the PHY devices are connected.  For each
device that exists on this bus, a child node should be created.  See
the definition of the PHY node below for an example of how to define
a PHY.

Required properties:
  - reg : Offset and length of the register set for the device
  - compatible : Should define the compatible device type for the
    mdio.  Currently, this is most likely to be "fsl,gianfar-mdio"

Example:

	mdio@24520 {
		reg = <24520 20>;
		compatible = "fsl,gianfar-mdio";

		ethernet-phy@0 {
			......
		};
	};


* Gianfar-compatible ethernet nodes

Properties:

  - device_type : Should be "network"
  - model : Model of the device.  Can be "TSEC", "eTSEC", or "FEC"
  - compatible : Should be "gianfar"
  - reg : Offset and length of the register set for the device
  - local-mac-address : List of bytes representing the ethernet address of
    this controller
  - interrupts : For FEC devices, the first interrupt is the device's
    interrupt.  For TSEC and eTSEC devices, the first interrupt is
    transmit, the second is receive, and the third is error.
  - phy-handle : The phandle for the PHY connected to this ethernet
    controller.
  - fixed-link : <a b c d e> where a is emulated phy id - choose any,
    but unique to the all specified fixed-links, b is duplex - 0 half,
    1 full, c is link speed - d#10/d#100/d#1000, d is pause - 0 no
    pause, 1 pause, e is asym_pause - 0 no asym_pause, 1 asym_pause.
  - phy-connection-type : a string naming the controller/PHY interface type,
    i.e., "mii" (default), "rmii", "gmii", "rgmii", "rgmii-id", "sgmii",
    "tbi", or "rtbi".  This property is only really needed if the connection
    is of type "rgmii-id", as all other connection types are detected by
    hardware.
  - fsl,magic-packet : If present, indicates that the hardware supports
    waking up via magic packet.

Example:
	ethernet@24000 {
		device_type = "network";
		model = "TSEC";
		compatible = "gianfar";
		reg = <0x24000 0x1000>;
		local-mac-address = [ 00 E0 0C 00 73 00 ];
		interrupts = <29 2 30 2 34 2>;
		interrupt-parent = <&mpic>;
		phy-handle = <&phy0>
	};