summaryrefslogtreecommitdiffstats
path: root/Documentation
diff options
context:
space:
mode:
authorRichard Cochran <richardcochran@gmail.com>2014-03-20 22:21:54 +0100
committerDavid S. Miller <davem@davemloft.net>2014-03-21 14:21:14 -0400
commit653104d19a7d490baeb94113151e95d8c04ef01d (patch)
tree8c3bca239f689be17e526304c0164f0994b240f1 /Documentation
parent888a36871e1924a235ad88198d903382151e4ac5 (diff)
downloadop-kernel-dev-653104d19a7d490baeb94113151e95d8c04ef01d.zip
op-kernel-dev-653104d19a7d490baeb94113151e95d8c04ef01d.tar.gz
ptp: expose the programmable pins via sysfs
This patch adds the sysfs hooks needed in order to get and set the programmable pin settings. 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-ptp20
1 files changed, 20 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-ptp b/Documentation/ABI/testing/sysfs-ptp
index 05aeedf..44806a6 100644
--- a/Documentation/ABI/testing/sysfs-ptp
+++ b/Documentation/ABI/testing/sysfs-ptp
@@ -54,6 +54,26 @@ Description:
This file contains the number of programmable periodic
output channels offered by the PTP hardware clock.
+What: /sys/class/ptp/ptpN/n_pins
+Date: March 2014
+Contact: Richard Cochran <richardcochran@gmail.com>
+Description:
+ This file contains the number of programmable pins
+ offered by the PTP hardware clock.
+
+What: /sys/class/ptp/ptpN/pins
+Date: March 2014
+Contact: Richard Cochran <richardcochran@gmail.com>
+Description:
+ This directory contains one file for each programmable
+ pin offered by the PTP hardware clock. The file name
+ is the hardware dependent pin name. Reading from this
+ file produces two numbers, the assigned function (see
+ the PTP_PF_ enumeration values in linux/ptp_clock.h)
+ and the channel number. The function and channel
+ assignment may be changed by two writing numbers into
+ the file.
+
What: /sys/class/ptp/ptpN/pps_avaiable
Date: September 2010
Contact: Richard Cochran <richardcochran@gmail.com>
OpenPOWER on IntegriCloud