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ptp: expose the programmable pins via sysfs

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This patch adds the sysfs hooks needed in order to get and set the
programmable pin settings.

Signed-off-by: Richard Cochran <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Richard Cochran 2014-03-20 22:21:54 +01:00 • committed by David S. Miller
commit 653104d19a
3 changed files with 138 additions and 0 deletions
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20
Documentation/ABI/testing/sysfs-ptp
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@ -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 <[email protected]>
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 <[email protected]>
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 <[email protected]>