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The Volume Down & Power buttons are controlled by the PMIC via the PON hardware, and the Volume Up is connected to a PMIC gpio. Enable the necessary hardware and setup the GPIO state for the Volume Up gpio key. Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Signed-off-by: Bjorn Andersson <andersson@kernel.org> Link: https://lore.kernel.org/r/20230525-topic-sm8550-upstream-pm8550-lpg-dt-v4-4-a288f24af81b@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.