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1f27fedead
The GPIO pins connected to the 4 Software Switches (SW2) and the second Tact Switch (SW25) do not have external pull-up resistors, but rely on internal pull-ups being enabled. Fortunately this is satisfied by the initial state of these pins. Make this explicit by enabling bias-pull-up, to remove the dependency on initial state and/or boot loader configuration. Note that the GPIO pin connected to the first Tact Switch (SW24) does have an external pull-up resistor. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/011e4c461767f2dd690b655b3dd501eb554184c1.1619785905.git.geert+renesas@glider.be
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.