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9f08c9ed58
Power-on reset after the insertion of a battery does not always complete successfully, leading to corrupted register content. The EXT_TEST bit will stop the clock from running, but currently the driver will never recover. Safely handle the erroneous state by clearing EXT_TEST as part of the usual set_time method. Signed-off-by: Phil Elwell <phil@raspberrypi.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20211015111208.1757110-1-phil@raspberrypi.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 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.