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The ROHM BD96801 "scalable PMIC" provides two physical IRQs. The ERRB handling can in many cases be omitted because it is used to inform fatal IRQs, which usually kill the power from the SOC. There may however be use-cases where the SOC has a 'back-up' emergency power source which allows some very short time of operation to try to gracefully shut down sensitive hardware. Furthermore, it is possible the processor controlling the PMIC is not powered by the PMIC. In such cases handling the ERRB IRQs may be beneficial. Add support for ERRB IRQs. Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com> Reviewed-by: Mark Brown <broonie@kernel.org> Link: https://patch.msgid.link/ZzWkny4lKpY09SX5@mva-rohm Signed-off-by: Mark Brown <broonie@kernel.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 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.