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Description in HWM rev0.51E, 9.4 Usage notes, page 455 tells "It takes several hundreds of microseconds to shutting off and resuming power domain. Because actual time required for shutting off and resuming depends on the status of on-board power line, shutoff/resume time is not guaranteed by electrical specification" Let's assume the safe value of waiting is about 1000us. Signed-off-by: Dien Pham <dien.pham.ry@renesas.com> Signed-off-by: Takeshi Kihara <takeshi.kihara.df@renesas.com> Signed-off-by: Tho Vu <tho.vu.wh@renesas.com> Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/8734tx8b18.wl-kuninori.morimoto.gx@renesas.com Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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.