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d92128c853
We found that the system was blocked in EHCI when perform suspend or reboot on RK3288 platform, the root cause is that EHCI (auto) suspend causes the corresponding usb-phy into suspend mode which would power down the inner PLL blocks in usb-phy if the COMMONONN is set to 1'b1. The PLL output clocks contained CLK480M, CLK12MOHCI, CLK48MOHCI, PHYCLOCK0 and so on, these clocks are not only supplied for EHCI and OHCI, but also supplied for GPU and other external modules, so setting COMMONONN to 1'b0 to keep the inner PLL blocks in usb-phy always powered. Change-Id: Ifb7f3d233cf72155aa54d20b15a62b683944a526 Signed-off-by: Frank Wang <frank.wang@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.