| * 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, and optionally |
| the offset and length of the TBIPA register (TBI PHY address |
| register). If TBIPA register is not specified, the driver will |
| attempt to infer it from the register set specified (your mileage may |
| vary). |
| - compatible : Should define the compatible device type for the |
| mdio. Currently supported strings/devices are: |
| - "fsl,gianfar-tbi" |
| - "fsl,gianfar-mdio" |
| - "fsl,etsec2-tbi" |
| - "fsl,etsec2-mdio" |
| - "fsl,ucc-mdio" |
| - "fsl,fman-mdio" |
| When device_type is "mdio", the following strings are also considered: |
| - "gianfar" |
| - "ucc_geth_phy" |
| |
| 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 |
| - 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 : See ethernet.txt file in the same directory. |
| - fixed-link : See fixed-link.txt in the same directory. |
| - phy-connection-type : See ethernet.txt file in the same directory. |
| 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. |
| - fsl,wake-on-filer : If present, indicates that the hardware supports |
| waking up by Filer General Purpose Interrupt (FGPI) asserted on the |
| Rx int line. This is an advanced power management capability allowing |
| certain packet types (user) defined by filer rules to wake up the system. |
| - 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> |
| }; |
| |
| * Gianfar PTP clock nodes |
| |
| Refer to Documentation/devicetree/bindings/ptp/ptp-qoriq.txt |