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996744d0d2
In kernel 4.4, we use the pm runtime mechanism in dwc3-rockchip.c to implement usb power management. In kernel 4.19, dwc3-rockchip.c is not required for drd mode switching, and the extcon notification function is written in core.c. So we use the runtime in core.c to implement power management. Change-Id: I483ce061a5b7b5a348e679d39c559a4ca29a40b8 Signed-off-by: Jianing Ren <jianing.ren@rock-chips.com>
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.