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- The following properties are common to the Ethernet controllers:
- - local-mac-address: array of 6 bytes, specifies the MAC address that was
- assigned to the network device;
- - mac-address: array of 6 bytes, specifies the MAC address that was last used by
- the boot program; should be used in cases where the MAC address assigned to
- the device by the boot program is different from the "local-mac-address"
- property;
- - max-speed: number, specifies maximum speed in Mbit/s supported by the device;
- - max-frame-size: number, maximum transfer unit (IEEE defined MTU), rather than
- the maximum frame size (there's contradiction in ePAPR).
- - phy-mode: string, operation mode of the PHY interface; supported values are
- "mii", "gmii", "sgmii", "qsgmii", "tbi", "rev-mii", "rmii", "rgmii", "rgmii-id",
- "rgmii-rxid", "rgmii-txid", "rtbi", "smii", "xgmii"; this is now a de-facto
- standard property;
- - phy-connection-type: the same as "phy-mode" property but described in ePAPR;
- - phy-handle: phandle, specifies a reference to a node representing a PHY
- device; this property is described in ePAPR and so preferred;
- - phy: the same as "phy-handle" property, not recommended for new bindings.
- - phy-device: the same as "phy-handle" property, not recommended for new
- bindings.
- - rx-fifo-depth: the size of the controller's receive fifo in bytes. This
- is used for components that can have configurable receive fifo sizes,
- and is useful for determining certain configuration settings such as
- flow control thresholds.
- - tx-fifo-depth: the size of the controller's transmit fifo in bytes. This
- is used for components that can have configurable fifo sizes.
- Child nodes of the Ethernet controller are typically the individual PHY devices
- connected via the MDIO bus (sometimes the MDIO bus controller is separate).
- They are described in the phy.txt file in this same directory.
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