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Jonathan McDowell
44825e5ead
The AXP209 device has a 4th GPIO which has a slightly different register setup, where the control + status bits are held in a single register rather than sharing AXP20X_GPIO20_SS with GPIOs 0-2. Signed-off-by: Jonathan McDowell <noodles@earth.li> Reviewed-by: Jernej Skrabec <jernej.skrabec@gmail.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Link: https://lore.kernel.org/r/dde40307f0ebc23b9841c32e702b481ab5193dc4.1684258957.git.noodles@earth.li Signed-off-by: Linus Walleij <linus.walleij@linaro.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.
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.