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If the OTG work in Host mode, delay power off phy in OTG_STATE_B_IDLE state when unplug OTG cable, this can fix the xHCI deregistered error with the following log on RK356x platforms: [ 16.856295] xhci-hcd xhci-hcd.5.auto: remove, state 4 [ 16.856340] usb usb8: USB disconnect, device number 1 [ 16.857778] xhci-hcd xhci-hcd.5.auto: USB bus 8 deregistered [ 16.858108] xhci-hcd xhci-hcd.5.auto: remove, state 4 [ 16.858146] usb usb7: USB disconnect, device number 1 [ 16.878109] xhci-hcd xhci-hcd.5.auto: Host halt failed, -110 [ 16.878151] xhci-hcd xhci-hcd.5.auto: Host controller not halted, aborting reset. [ 16.878853] xhci-hcd xhci-hcd.5.auto: USB bus 7 deregistered Change-Id: I4467afdd3fe20839a9ec967624868ce3773e048c Signed-off-by: William Wu <william.wu@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.
Description
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