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(parent: 239b31b) | patch
drm/amd/display: Add delay to improve LTTPR UHBR interop
authorMichael Strauss <michael.strauss@amd.com>
Tue, 9 Apr 2024 16:00:34 +0000 (12:00 -0400)
committerAlex Deucher <alexander.deucher@amd.com>
Tue, 30 Apr 2024 13:46:00 +0000 (09:46 -0400)
commit10839ee6a977ed1f7d0f4deb29f2d7e5d1f2a9dd
treef04d590fee7bd2bd85fd9478bdfd04221411f100tree
parent239b31bd5c3fef3698440bf6436b2068c6bb08a3commit | diff
drm/amd/display: Add delay to improve LTTPR UHBR interop

[WHY]
Avoid race condition which puts LTTPR into bad state during UHBR LT.

[HOW]
Delay 30ms between starting UHBR TPS1 PHY output and sending TPS1 via DPCD.

Reviewed-by: Wenjing Liu <wenjing.liu@amd.com>
Acked-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Michael Strauss <michael.strauss@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drivers/gpu/drm/amd/display/dc/link/hwss/link_hwss_hpo_fixed_vs_pe_retimer_dp.c diff | blob | blame | history
Linux 6.x block layer and io_uring tree(s)