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When a mst capable immediate downstream device connected, some workqueue is used to help build and menage the topology, write/read sidband message. To avoid some access aux issue happen. we config phy power on when mst capable immediate downstream device connected and config phy power off when it becom disconnected. When a mst capable immediate downstream device connected and enter to suspend state, it need config phy power off. And it need config phy power on when it enter to resume state. This operation to guarantee phy can really power off when suspend and really power on when resume. Change-Id: I50e9c800c7b07ea2dd00d8728e08e9abc687378f Signed-off-by: Zhang Yubing <yubing.zhang@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.
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.