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891598089f
On some xHCI controllers (e.g. Rockchip SoCs), which are integrated in DWC3 IP, need an extraordinary delay to wait for xHCI enter the Halted state(i.e. HCH in the USBSTS register is '1'), especially if DWC3 is in DRD mode. Change-Id: I67c84d4768df95f7616d6716a77cf743e4334122 Signed-off-by: Wu Liang feng <wulf@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.