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9572594ecf
dpni_get_single_step_cfg is an MC firmware command used for retrieving the contents of SINGLE_STEP 1588 register available in a DPMAC. This patch adds a new version of this command that returns as an extra argument the physical base address of the aforementioned register. The address will be used to directly modify the contents of the SINGLE_STEP register instead of invoking the MC command dpni_set_single_step_cgf. The former approach introduced huge delays on the TX datapath when one step PTP events were transmitted. This led to low throughput and high latencies observed in the PTP correction field. Signed-off-by: Radu Bulie <radu-andrei.bulie@nxp.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.