1What: /sys/bus/mdio_bus/devices/.../phy_id 2Date: November 2012 3KernelVersion: 3.8 4Contact: netdev@vger.kernel.org 5Description: 6 This attribute contains the 32-bit PHY Identifier as reported 7 by the device during bus enumeration, encoded in hexadecimal. 8 This ID is used to match the device with the appropriate 9 driver. 10