1The following properties are common to the Ethernet controllers: 2 3- local-mac-address: array of 6 bytes, specifies the MAC address that was 4 assigned to the network device; 5- mac-address: array of 6 bytes, specifies the MAC address that was last used by 6 the boot program; should be used in cases where the MAC address assigned to 7 the device by the boot program is different from the "local-mac-address" 8 property; 9- max-speed: number, specifies maximum speed in Mbit/s supported by the device; 10- max-frame-size: number, maximum transfer unit (IEEE defined MTU), rather than 11 the maximum frame size (there's contradiction in ePAPR). 12- phy-mode: string, operation mode of the PHY interface; supported values are 13 "mii", "gmii", "sgmii", "qsgmii", "tbi", "rev-mii", "rmii", "rgmii", "rgmii-id", 14 "rgmii-rxid", "rgmii-txid", "rtbi", "smii", "xgmii"; this is now a de-facto 15 standard property; 16- phy-connection-type: the same as "phy-mode" property but described in ePAPR; 17- phy-handle: phandle, specifies a reference to a node representing a PHY 18 device; this property is described in ePAPR and so preferred; 19- phy: the same as "phy-handle" property, not recommended for new bindings. 20- phy-device: the same as "phy-handle" property, not recommended for new 21 bindings. 22 23Child nodes of the Ethernet controller are typically the individual PHY devices 24connected via the MDIO bus (sometimes the MDIO bus controller is separate). 25They are described in the phy.txt file in this same directory. 26