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| author | Richard Cochran <richardcochran@gmail.com> | 2012-09-22 11:02:04 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-09-22 23:42:46 +0400 |
| commit | de46584675fad02b7f8255f31be0ea1be5cd185b (patch) | |
| tree | 45fe54d42a38c2f1293fc6137f2f1ebae62ef88e /Documentation | |
| parent | 1ef761582c074448bae5be97abde5934667e7710 (diff) | |
| download | linux-de46584675fad02b7f8255f31be0ea1be5cd185b.tar.xz | |
ptp: clarify the clock_name sysfs attribute
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>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-ptp | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/Documentation/ABI/testing/sysfs-ptp b/Documentation/ABI/testing/sysfs-ptp index d40d2b550502..05aeedf17794 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 |