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.
Stephan Gerhold
authored
The PM8916 PMIC provides "power-off reason" (POFF_REASON) registers to allow detecting why the board was powered off or rebooted. This can be used to expose if a reset happened due to a watchdog timeout. The watchdog API also provides status bits for overtemperature and undervoltage which happen to be reported in the same PMIC register. Make this information available as part of the watchdog device so userspace can decide to handle the situation accordingly. Signed-off-by:Stephan Gerhold <stephan.gerhold@kernkonzept.com> Reviewed-by:
Loic Poulain <loic.poulain@linaro.org> Reviewed-by:
Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20220629084816.125515-3-stephan.gerhold@kernkonzept.com Signed-off-by:
Guenter Roeck <linux@roeck-us.net> Signed-off-by:
Wim Van Sebroeck <wim@linux-watchdog.org>
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