cd0c1e582b
According to USB4 retimer specification, the process of firmware update sequence requires issuing a SET_INBOUND_SBTX port operation that later shall be followed by UNSET_INBOUND_SBTX port operation. This last step is not currently issued by the driver but it is necessary to make sure the retimers are put back to passthrough mode even during enumeration. If this step is missing the link may not come up properly after soft-reboot for example. For this reason issue UNSET_INBOUND_SBTX after SET_INBOUND_SBTX for enumeration and also when the NVM upgrade is run. Reported-by: Christian Schaubschläger <christian.schaubschlaeger@gmx.at> Link: https://lore.kernel.org/linux-usb/b556f5ed-5ee8-9990-9910-afd60db93310@gmx.at/ Cc: stable@vger.kernel.org Signed-off-by: Gil Fine <gil.fine@linux.intel.com> Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.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.