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Part of the device initialization aligns the rising edge of the output clock to the internal 1 PPS clock. If the system APLL and DPLL is not locked, then the alignment will fail and there will be a fixed offset between the internal 1 PPS clock and the output clock. After loading the device firmware, poll the system APLL and DPLL for locked state prior to initialization, timing out after 2 seconds. Signed-off-by: Vincent Cheng <vincent.cheng.xh@renesas.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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.