Documentation/ABI/testing/sysfs-bus-mdio

   1 What:           /sys/bus/mdio_bus/devices/.../phy_id
   2 Date:           November 2012
   3 KernelVersion:  3.8
   4 Contact:        netdev@vger.kernel.org
   5 Description:
   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.