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What:		/sys/class/pps/
Date:		February 2008
Contact:	Rodolfo Giometti <giometti@linux.it>
Description:
		The /sys/class/pps/ directory will contain files and
		directories that will provide a unified interface to
		the PPS sources.

What:		/sys/class/pps/ppsX/
Date:		February 2008
Contact:	Rodolfo Giometti <giometti@linux.it>
Description:
		The /sys/class/pps/ppsX/ directory is related to X-th
		PPS source into the system. Each directory will
		contain files to manage and control its PPS source.

What:		/sys/class/pps/ppsX/assert
Date:		February 2008
Contact:	Rodolfo Giometti <giometti@linux.it>
Description:
		The /sys/class/pps/ppsX/assert file reports the assert events
		and the assert sequence number of the X-th source in the form:

			<secs>.<nsec>#<sequence>

		If the source has no assert events the content of this file
		is empty.

What:		/sys/class/pps/ppsX/clear
Date:		February 2008
Contact:	Rodolfo Giometti <giometti@linux.it>
Description:
		The /sys/class/pps/ppsX/clear file reports the clear events
		and the clear sequence number of the X-th source in the form:

			<secs>.<nsec>#<sequence>

		If the source has no clear events the content of this file
		is empty.

What:		/sys/class/pps/ppsX/mode
Date:		February 2008
Contact:	Rodolfo Giometti <giometti@linux.it>
Description:
		The /sys/class/pps/ppsX/mode file reports the functioning
		mode of the X-th source in hexadecimal encoding.

		Please, refer to linux/include/linux/pps.h for further
		info.

What:		/sys/class/pps/ppsX/echo
Date:		February 2008
Contact:	Rodolfo Giometti <giometti@linux.it>
Description:
		The /sys/class/pps/ppsX/echo file reports if the X-th does
		or does not support an "echo" function.

What:		/sys/class/pps/ppsX/name
Date:		February 2008
Contact:	Rodolfo Giometti <giometti@linux.it>
Description:
		The /sys/class/pps/ppsX/name file reports the name of the
		X-th source.

What:		/sys/class/pps/ppsX/path
Date:		February 2008
Contact:	Rodolfo Giometti <giometti@linux.it>
Description:
		The /sys/class/pps/ppsX/path file reports the path name of
		the device connected with the X-th source.

		If the source is not connected with any device the content
		of this file is empty.