1 files changed, 20 insertions, 0 deletions

diff --git a/Documentation/ABI/testing/sysfs-bus-mdio b/Documentation/ABI/testing/sysfs-bus-mdio
index 6349749ebc29..491baaf4285f 100644
--- a/Documentation/ABI/testing/sysfs-bus-mdio
+++ b/Documentation/ABI/testing/sysfs-bus-mdio
@@ -7,3 +7,23 @@ Description:
                 by the device during bus enumeration, encoded in hexadecimal.
                 This ID is used to match the device with the appropriate
                 driver.
+
+What:           /sys/bus/mdio_bus/devices/.../phy_interface
+Date:           February 2014
+KernelVersion:  3.15
+Contact:        netdev@vger.kernel.org
+Description:
+                This attribute contains the PHY interface as configured by the
+                Ethernet driver during bus enumeration, encoded in string.
+                This interface mode is used to configure the Ethernet MAC with the
+                appropriate mode for its data lines to the PHY hardware.
+
+What:           /sys/bus/mdio_bus/devices/.../phy_has_fixups
+Date:           February 2014
+KernelVersion:  3.15
+Contact:        netdev@vger.kernel.org
+Description:
+                This attribute contains the boolean value whether a given PHY
+                device has had any "fixup" workaround running on it, encoded as
+                a boolean. This information is provided to help troubleshooting
+                PHY configurations.