mainlining shenanigans
cf29b9afb1
Time Management Unit (TMU) is included in each USB4 router. It is used to synchronize time across the USB4 fabric. By default when USB4 router is plugged to the domain, its TMU is turned off. This differs from Thunderbolt (1, 2 and 3) devices whose TMU is by default configured to bi-directional HiFi mode. Since time synchronization is needed for proper Display Port tunneling this means we need to configure the TMU on USB4 compliant devices. The USB4 spec allows some flexibility on how the TMU can be configured. This makes it possible to enable link power management states (CLx) in certain topologies, where for example DP tunneling is not used. TMU can also be re-configured dynamicaly depending on types of tunnels created over the USB4 fabric. In this patch we simply configure the TMU to be in bi-directional HiFi mode. This way we can tunnel any kind of traffic without need to perform complex steps to re-configure the domain dynamically. We can add more fine-grained TMU configuration later on when we start enabling CLx states. Signed-off-by: Rajmohan Mani <rajmohan.mani@intel.com> Co-developed-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Link: https://lore.kernel.org/r/20191217123345.31850-8-mika.westerberg@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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| arch | ||
| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
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.