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authorNick Bowler <nbowler@elliptictech.com>2012-11-07 06:20:34 +0000
committerDavid S. Miller <davem@davemloft.net>2012-11-09 16:38:15 -0500
commit56277f40d73f12d9ffb12b5a6bd7e0ad1f2284b3 (patch)
tree75e5fe8498c57e8d7863dfd1b0146e5eec04fcb7 /Documentation/ABI
parentb1ead1aea1d7e3c260d896943056453717577525 (diff)
downloadlinux-56277f40d73f12d9ffb12b5a6bd7e0ad1f2284b3.tar.gz
phylib: mdio: Add sysfs attribute for PHY identifiers.
This adds a phy_id sysfs attribute to MDIO devices, containing the 32-bit PHY identifier reported by the device. This attribute can be useful when debugging problems related to phy drivers. Other enumerable buses already have similar attributes. Signed-off-by: Nick Bowler <nbowler@elliptictech.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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+What: /sys/bus/mdio_bus/devices/.../phy_id
+Date: November 2012
+KernelVersion: 3.8
+Contact: netdev@vger.kernel.org
+Description:
+ This attribute contains the 32-bit PHY Identifier as reported
+ by the device during bus enumeration, encoded in hexadecimal.
+ This ID is used to match the device with the appropriate
+ driver.