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Make sure the DVBxB bit 5, PGOOD mask, is set before changing voltage on the buck converters. If the PGOOD mask bit is not set, the PMIC may deassert the PGOOD signal during the voltage transition. On systems that use the PGOOD signal as a power OK indication for the board or SoC, which should be the case on correct designs, deasserting the PGOOD signal will lead to system reset or shutdown, which is not the expected behavior when changing PMIC buck converter voltage. Signed-off-by: Marek Vasut <marex@denx.de> 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 Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.
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.