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350749b909
This patch adds the support for configuring periodic output signal of PPS. So the PPS can be output at a specified time and period. For developers or testers, they can use the command "echo <channel> <start.sec> <start.nsec> <period.sec> <period. nsec> > /sys/class/ptp/ptp0/period" to specify time and period to output PPS signal. Notice that, the channel can only be set to 0. In addtion, the start time must larger than the current PTP clock time. So users can use the command "phc_ctl /dev/ptp0 -- get" to get the current PTP clock time before. Signed-off-by: Wei Fang <wei.fang@nxp.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.