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ptp: clarify the clock_name sysfs attribute

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There has been some confusion among PHC driver authors about the
intended purpose of the clock_name attribute. This patch expands the
documation in order to clarify how the clock_name field should be
understood.

Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Richard Cochran
2012-09-22 07:02:04 +00:00
committed by David S. Miller
parent 1ef761582c
commit de46584675
2 changed files with 8 additions and 2 deletions
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6
Documentation/ABI/testing/sysfs-ptp
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@@ -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