From 653104d19a7d490baeb94113151e95d8c04ef01d Mon Sep 17 00:00:00 2001 From: Richard Cochran Date: Thu, 20 Mar 2014 22:21:54 +0100 Subject: 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 Signed-off-by: David S. Miller --- Documentation/ABI/testing/sysfs-ptp | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'Documentation/ABI/testing/sysfs-ptp') diff --git a/Documentation/ABI/testing/sysfs-ptp b/Documentation/ABI/testing/sysfs-ptp index 05aeedf17794..44806a678f12 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 +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 +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 -- cgit v1.2.1