[Public]
-----Original Message----- From: Greg KH gregkh@linuxfoundation.org Sent: Thursday, April 14, 2022 6:46 AM To: Deucher, Alexander Alexander.Deucher@amd.com Cc: stable@vger.kernel.org; Kazlauskas, Nicholas Nicholas.Kazlauskas@amd.com; Yang, Eric Eric.Yang2@amd.com; Wentland, Harry Harry.Wentland@amd.com; Gong, Richard Richard.Gong@amd.com Subject: Re: [PATCH 1/2] drm/amd/display: Add pstate verification and recovery for DCN31
On Wed, Apr 13, 2022 at 11:33:38AM -0400, Alex Deucher wrote:
From: Nicholas Kazlauskas nicholas.kazlauskas@amd.com
[Why] To debug when p-state is being blocked and avoid PMFW hangs when it does occur.
[How] Re-use the DCN10 hardware sequencer by adding a new interface for verifying p-state high on the hubbub. The interface is mostly the same as the DCN10 interface, but the bit definitions have changed for the debug bus.
Signed-off-by: Nicholas Kazlauskas nicholas.kazlauskas@amd.com Reviewed-by: Eric Yang Eric.Yang2@amd.com Reviewed-by: Harry Wentland harry.wentland@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com (cherry
picked
from commit e7031d8258f1b4d6d50e5e5b5d92ba16f66eb8b4) Cc: richard.gong@amd.com Cc: nicholas.kazlauskas@amd.com Cc: stable@vger.kernel.org # 3.15.x
This does not apply to all of those kernels. Please provide backports for the ones you want it applied to older than 5.15.y
Argh, sorry I typed that, I meant 5.15.x. All good.
Thanks,
Alex