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authorRichard Cochran <richardcochran@gmail.com>2012-09-22 07:02:04 +0000
committerDavid S. Miller <davem@davemloft.net>2012-09-22 15:42:46 -0400
commitde46584675fad02b7f8255f31be0ea1be5cd185b (patch)
tree45fe54d42a38c2f1293fc6137f2f1ebae62ef88e /Documentation/ABI
parent1ef761582c074448bae5be97abde5934667e7710 (diff)
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op-kernel-dev-de46584675fad02b7f8255f31be0ea1be5cd185b.tar.gz
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/ABI')
-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 d40d2b5..05aeedf 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
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