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-rw-r--r--Documentation/ABI/testing/sysfs-ptp6
1 files changed, 5 insertions, 1 deletions
diff --git a/Documentation/ABI/testing/sysfs-ptp b/Documentation/ABI/testing/sysfs-ptp
index d40d2b55050..05aeedf1779 100644
--- a/Documentation/ABI/testing/sysfs-ptp
+++ b/Documentation/ABI/testing/sysfs-ptp
@@ -19,7 +19,11 @@ Date: September 2010
Contact: Richard Cochran <richardcochran@gmail.com>
Description:
This file contains the name of the PTP hardware clock
- as a human readable string.
+ as a human readable string. The purpose of this
+ attribute is to provide the user with a "friendly
+ name" and to help distinguish PHY based devices from
+ MAC based ones. The string does not necessarily have
+ to be any kind of unique id.
What: /sys/class/ptp/ptpN/max_adjustment
Date: September 2010