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2a36550567
The GPIO controller doesn't have any controls to enable the system to wake up from low power states based on activity on GPIO pins. An extra hardware block that is part of the power management controller (PMC) contains these controls. In order for the GPIO controller to be able to cooperate with the PMC, obtain a reference to the PMC's IRQ domain and make it a parent to the GPIO controller's IRQ domain. This way the PMC gets an opportunity to program the additional registers required to enable wakeup sources on suspend. Based on additional work by Bitan Biswas <bbiswas@nvidia.com>. Signed-off-by: Thierry Reding <treding@nvidia.com> Link: https://lore.kernel.org/r/20191002144502.156393-2-thierry.reding@gmail.com Signed-off-by: Linus Walleij <linus.walleij@linaro.org> |
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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.