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Currently any DW APB Timer device detected in OF is bound to CPU #0. Doing so is redundant since DW APB Timer isn't CPU-local timer, but as having APB interface is normally accessible from any CPU in the system. By artificially affiliating the DW timer to the very first CPU we may and in our case will make the clockevent subsystem to decline the more performant real CPU-local timers selection in favor of in fact non-local and accessible over a slow bus - DW APB Timers. Let's not affiliate the of-detected DW APB Timers to any CPU. By doing so the clockevent framework would prefer to select the real CPU-local timer instead of DW APB one. Otherwise if there is no other than DW APB device for clockevents tracking then it will be selected. Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru> Cc: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Paul Burton <paulburton@kernel.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Alexandre Belloni <alexandre.belloni@bootlin.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Rob Herring <robh+dt@kernel.org> Cc: linux-mips@vger.kernel.org Cc: linux-rtc@vger.kernel.org Cc: devicetree@vger.kernel.org Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Link: https://lore.kernel.org/r/20200521204818.25436-6-Sergey.Semin@baikalelectronics.ru
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.