[lkml]   [2019]   [Dec]   [18]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH v2 0/9] thunderbolt: Add support for USB4
On Tue, Dec 17, 2019 at 03:33:36PM +0300, Mika Westerberg wrote:
> Hi all,
> USB4 is the public specification of Thunderbolt 3 protocol and can be
> downloaded here:
> USB4 is about tunneling different protocols over a single cable (in the
> same way as Thunderbolt). The current USB4 spec supports PCIe, Display Port
> and USB 3.x, and also software based protocols such as networking between
> domains (hosts).
> So far PCs have been using firmware based Connection Manager (FW CM, ICM)
> and Apple systems have been using software based one (SW CM, ECM). A
> Connection Manager is the entity that handles creation of different tunnel
> types through the USB4 (and Thunderbolt) fabric. With USB4 the plan is to
> have software based Connection Manager everywhere but some early systems
> will come with firmware based connection manager.
> Current Linux Thunderbolt driver supports both "modes" and can detect which
> one to use dynamically.
> This series extends the Linux Thunderbolt driver to support USB4 compliant
> hosts and devices (this applies to both firmware and software based
> connection managers). USB4 Features enabled by this series include:
> - PCIe tunneling
> - Display Port tunneling
> - USB 3.x tunneling
> - P2P networking (implemented in drivers/net/thunderbolt.c)
> - Host and device NVM firmware upgrade
> Power management support is still work in progress. It will be submitted
> later on once properly tested.
> The previous versions of the series can be seen here:
> v1:
> RFC:
> Changes from v1:
> * Rebased on top of v5.5-rc2.
> * Add a new patch to populate PG field in hotplug ack packet.
> * Rename the networking driver Kconfig symbol to CONFIG_USB4_NET to
> follow the driver itself (CONFIG_USB4).

At a quick glance, this looks nice and sane, good job. I've taken all
of these into my tree, let's see if 0-day has any problems with it :)


greg k-h

 \ /
  Last update: 2019-12-18 15:44    [W:0.135 / U:0.652 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site