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Wei Fang says: ==================== ptp: add pulse signal loopback support for debugging Some PTP devices support looping back the periodic pulse signal for debugging. For example, the PTP device of QorIQ platform and the NETC v4 Timer has the ability to loop back the pulse signal and record the extts events for the loopback signal. So we can make sure that the pulse intervals and their phase alignment are correct from the perspective of the emitting PHC's time base. In addition, we can use this loopback feature as a built-in extts event generator when we have no external equipment which does that. Therefore, add the generic debugfs interfaces to the ptp_clock driver. The first two patch are separated from the previous patch set [1]. The third patch is new added. [1]: https://lore.kernel.org/imx/20250827063332.1217664-1-wei.fang@nxp.com/ #patch 3 and 9 ==================== Link: https://patch.msgid.link/20250905030711.1509648-1-wei.fang@nxp.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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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 reStructuredText 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.