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Kumar Galad0fc2ea2008-07-07 11:28:33 -05001* MDIO IO device
2
3The MDIO is a bus to which the PHY devices are connected. For each
4device that exists on this bus, a child node should be created. See
Andy Flemingb31a1d82008-12-16 15:29:15 -08005the definition of the PHY node in booting-without-of.txt for an example
6of how to define a PHY.
Kumar Galad0fc2ea2008-07-07 11:28:33 -05007
8Required properties:
9 - reg : Offset and length of the register set for the device
10 - compatible : Should define the compatible device type for the
11 mdio. Currently, this is most likely to be "fsl,gianfar-mdio"
12
13Example:
14
15 mdio@24520 {
16 reg = <24520 20>;
17 compatible = "fsl,gianfar-mdio";
18
19 ethernet-phy@0 {
20 ......
21 };
22 };
23
Andy Flemingb31a1d82008-12-16 15:29:15 -080024* TBI Internal MDIO bus
25
26As of this writing, every tsec is associated with an internal TBI PHY.
27This PHY is accessed through the local MDIO bus. These buses are defined
28similarly to the mdio buses, except they are compatible with "fsl,gianfar-tbi".
29The TBI PHYs underneath them are similar to normal PHYs, but the reg property
30is considered instructive, rather than descriptive. The reg property should
31be chosen so it doesn't interfere with other PHYs on the bus.
Kumar Galad0fc2ea2008-07-07 11:28:33 -050032
33* Gianfar-compatible ethernet nodes
34
Scott Wood00262982008-07-11 18:04:43 -050035Properties:
Kumar Galad0fc2ea2008-07-07 11:28:33 -050036
37 - device_type : Should be "network"
38 - model : Model of the device. Can be "TSEC", "eTSEC", or "FEC"
39 - compatible : Should be "gianfar"
40 - reg : Offset and length of the register set for the device
Scott Wood00262982008-07-11 18:04:43 -050041 - local-mac-address : List of bytes representing the ethernet address of
Kumar Galad0fc2ea2008-07-07 11:28:33 -050042 this controller
Scott Wood00262982008-07-11 18:04:43 -050043 - interrupts : For FEC devices, the first interrupt is the device's
44 interrupt. For TSEC and eTSEC devices, the first interrupt is
45 transmit, the second is receive, and the third is error.
Kumar Galad0fc2ea2008-07-07 11:28:33 -050046 - phy-handle : The phandle for the PHY connected to this ethernet
47 controller.
48 - fixed-link : <a b c d e> where a is emulated phy id - choose any,
49 but unique to the all specified fixed-links, b is duplex - 0 half,
50 1 full, c is link speed - d#10/d#100/d#1000, d is pause - 0 no
51 pause, 1 pause, e is asym_pause - 0 no asym_pause, 1 asym_pause.
Kumar Galad0fc2ea2008-07-07 11:28:33 -050052 - phy-connection-type : a string naming the controller/PHY interface type,
53 i.e., "mii" (default), "rmii", "gmii", "rgmii", "rgmii-id", "sgmii",
54 "tbi", or "rtbi". This property is only really needed if the connection
55 is of type "rgmii-id", as all other connection types are detected by
56 hardware.
Scott Wood00262982008-07-11 18:04:43 -050057 - fsl,magic-packet : If present, indicates that the hardware supports
58 waking up via magic packet.
Andy Fleming4d7902f2009-02-04 16:43:44 -080059 - bd-stash : If present, indicates that the hardware supports stashing
60 buffer descriptors in the L2.
61 - rx-stash-len : Denotes the number of bytes of a received buffer to stash
62 in the L2.
63 - rx-stash-idx : Denotes the index of the first byte from the received
64 buffer to stash in the L2.
Kumar Galad0fc2ea2008-07-07 11:28:33 -050065
66Example:
67 ethernet@24000 {
Kumar Galad0fc2ea2008-07-07 11:28:33 -050068 device_type = "network";
69 model = "TSEC";
70 compatible = "gianfar";
Scott Wood00262982008-07-11 18:04:43 -050071 reg = <0x24000 0x1000>;
72 local-mac-address = [ 00 E0 0C 00 73 00 ];
73 interrupts = <29 2 30 2 34 2>;
74 interrupt-parent = <&mpic>;
75 phy-handle = <&phy0>
Kumar Galad0fc2ea2008-07-07 11:28:33 -050076 };