APPLIED[J]: [PATCH 0/9][SRU][Jammy] Support USB4 DP alt mode for AMD Yellow Carp graphics card

[Andrea Righi]

On Wed, Dec 15, 2021 at 02:57:21PM +0800, You-Sheng Yang wrote:
> BugLink: https://bugs.launchpad.net/bugs/1953008
> 
> [Impact]
> 
> USB4 DP alt mode not available on AMD yellow carp.
> 
> [Fix]
> 
> Several fixing commits from upstream, inclusive of one titled
> "drm/amd/display: Fixup previous PSR policy commit" sauced commit to
> fix backport problems for commit 9470620e99e9 ("drm/amd/display: Enable
> PSR by default on newer DCN").
> 
> This also depends on the firmware updates.
> 
> [Test Case]
> 
> Plug an external monitor with USB Type-C input function to AMD RMB CRB
> (which has yellow carp) usbc0 and usbc1.
> 
> [Where problems could occur]
> 
> The patches revealed multiple dmub firmware versions were skipped. This
> might introduce incompatibilities between driver code and the firmware.

I've done a more detailed review of the backports, they look pretty safe
(all context adjustments at the end) and I didn't spot any obvious bug,
therefore: applied to jammy/linux.

Thanks,
-Andrea