| * 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 in booting-without-of.txt 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 { |
| ...... |
| }; |
| }; |
| |
| * TBI Internal MDIO bus |
| |
| As of this writing, every tsec is associated with an internal TBI PHY. |
| This PHY is accessed through the local MDIO bus. These buses are defined |
| similarly to the mdio buses, except they are compatible with "fsl,gianfar-tbi". |
| The TBI PHYs underneath them are similar to normal PHYs, but the reg property |
| is considered instructive, rather than descriptive. The reg property should |
| be chosen so it doesn't interfere with other PHYs on the bus. |
| |
| * 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. |
| - bd-stash : If present, indicates that the hardware supports stashing |
| buffer descriptors in the L2. |
| - rx-stash-len : Denotes the number of bytes of a received buffer to stash |
| in the L2. |
| - rx-stash-idx : Denotes the index of the first byte from the received |
| buffer to stash in the L2. |
| |
| 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> |
| }; |