OSDN Git Service

drm/amd/display: Read max down spread
authorDerek Lai <Derek.Lai@amd.com>
Tue, 18 Jun 2019 06:55:57 +0000 (14:55 +0800)
committerAlex Deucher <alexander.deucher@amd.com>
Thu, 18 Jul 2019 19:17:19 +0000 (14:17 -0500)
commit12d0e503dd9e0576487b2f20577717b2a36fe0c5
tree07995f61c2b1b561ab5cee7809280bd109bd70e8
parent288af96df16b629552c5bcc9ec0f0191c6198a72
drm/amd/display: Read max down spread

[Why]
When launch D10.2, driver will write DPCD 0x107 with 0x00

[How]
Read MAX_DOWNSPREAD (0x0003h) then keep in current
link settings

Signed-off-by: Derek Lai <Derek.Lai@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drivers/gpu/drm/amd/display/dc/core/dc_link.c