linux/drivers/gpu/drm/amd
Lewis Huang b473bd5fc3 drm/amd/display: refine wake up aux in retrieve link caps
[Why]
Read set_power_state dpcd after HPD cause USB4 CTS 4.2.1.1

[How]
Read LTTPR caps first. If aux channel not ready, wake up aux channel.
If wake up aux channel return pass, retrieve lttpr caps again. If wake
up aux channel return false, register a detection retry timer.

Tested-by: Mark Broadworth <mark.broadworth@amd.com>
Reviewed-by: Wenjing Liu <Wenjing.Liu@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Lewis Huang <Lewis.Huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2022-10-24 14:36:12 -04:00
..
acp
amdgpu drm/amdgpu: disallow gfxoff until GC IP blocks complete s2idle resume 2022-10-24 14:34:48 -04:00
amdkfd drm/amdkfd: introduce dummy cache info for property asic 2022-10-24 14:34:47 -04:00
display drm/amd/display: refine wake up aux in retrieve link caps 2022-10-24 14:36:12 -04:00
include drm/amdkfd: Fix type of reset_type parameter in hqd_destroy() callback 2022-10-17 17:41:21 -04:00
pm drm/amd/pm: allow gfxoff on gc_11_0_3 2022-10-24 14:34:47 -04:00