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+Note:
+ This documents additional properties of any device beyond what
+ is documented in Documentation/admin-guide/sysfs-rules.rst
+
+What: /sys/devices/*/of_node
+Date: February 2015
+Contact: Device Tree mailing list <devicetree@vger.kernel.org>
+Description:
+ Any device associated with a device-tree node will have
+ an of_path symlink pointing to the corresponding device
+ node in /sys/firmware/devicetree/
+
+What: /sys/devices/*/devspec
+Date: October 2016
+Contact: Device Tree mailing list <devicetree@vger.kernel.org>
+Description:
+ If CONFIG_OF is enabled, then this file is present. When
+ read, it returns full name of the device node.
+
+What: /sys/devices/*/obppath
+Date: October 2016
+Contact: Device Tree mailing list <devicetree@vger.kernel.org>
+Description:
+ If CONFIG_OF is enabled, then this file is present. When
+ read, it returns full name of the device node.