linux_dsm_epyc7002/drivers/gpu/drm/amd
Zhan Liu 2d5ef0b42c drm/amd/display: Don't disable DP PHY when link loss happens
[Why]
There is a use case that link loss happens accidentally,
and we need to recover that link loss as soon as possible.
Under this circumstance, we will perform link training,
and try to recover the link that's just lost.

However, if link PHY is disabled before link training
happens, then DP display will never come back again.

Also, please note that dropping this disable_phy function
call won't break USB-C hotplug functionality.
(This line of code was firstly introduced associated with
a patch to fix USB-C hotplug issue)

[How]
Don't disable DP transmitter and its encoder before link
training happens, even if link loss is detected.

Signed-off-by: Zhan Liu <zhan.liu@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-01-14 10:18:09 -05:00
..
acp drm/amdgpu: fix license on Kconfig and Makefiles 2019-12-11 15:22:08 -05:00
amdgpu drm/amdgpu: read sdma edc counter to clear the counters 2020-01-14 10:18:08 -05:00
amdkfd drm/amdkfd: Improve kfd_process lookup in kfd_ioctl 2020-01-09 16:08:19 -05:00
display drm/amd/display: Don't disable DP PHY when link loss happens 2020-01-14 10:18:09 -05:00
include drm/amdgpu: update the method to get fb_loc of memory training(V4) 2019-12-23 14:59:20 -05:00
powerplay drm/amd/powerplay: cleanup the interfaces for powergate setting through SMU 2020-01-07 12:01:54 -05:00