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As per the latest HW manual[1], the INT# output is pulled low after the alarm is triggered. After the INT# output is pulled low, it is low for at least 250ms, even if the correct action is taken to clear it. It is impossible to clear ALM if it is still active. The host must wait for the RTC to progress past the alarm time plus the 250ms delay before clearing ALM. [1]https://www.renesas.com/us/en/document/dst/raa215300-datasheet?r=1506351 Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com> Link: https://lore.kernel.org/r/20240618152635.48956-2-biju.das.jz@bp.renesas.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
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.