RE: [PATCH v3] drm/amd/display: Look at firmware version to determine using dmub on dcn21

[Public] Reviewed-by: Roman Li > -Original Message- > From: Alex Deucher > Sent: Tuesday, November 2, 2021 11:58 AM > To: Limonciello, Mario > Cc: amd-gfx list ; Li, Roman > > Subject: Re: [PATCH v3] drm/amd/display: Look at firmware version to > determine us

Re: [PATCH v3] drm/amd/display: Look at firmware version to determine using dmub on dcn21

On Tue, Nov 2, 2021 at 11:04 AM Mario Limonciello wrote: > > commit b1c61212d8dc ("drm/amd/display: Fully switch to dmub for all dcn21 > asics") switched over to using dmub on Renoir to fix Gitlab 1735, but this > implied a new dependency on newer firmware which might not be met on older > kernel

[PATCH v3] drm/amd/display: Look at firmware version to determine using dmub on dcn21

commit b1c61212d8dc ("drm/amd/display: Fully switch to dmub for all dcn21 asics") switched over to using dmub on Renoir to fix Gitlab 1735, but this implied a new dependency on newer firmware which might not be met on older kernel versions. Since sw_init runs before hw_init, there is an opportunit