diff options
| author | Derek Lai <Derek.Lai@amd.com> | 2018-12-11 16:27:09 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2019-01-14 15:40:08 -0500 |
| commit | b03a599b3e1f520e79d3dbf487179bd0d70d4681 (patch) | |
| tree | 35640d1a7b0cf19d3ac5df3aed96376800d26f86 /drivers/gpu/drm/amd/display/dc/dc.h | |
| parent | 7eb9097541706a71dfda01e456cae2930f24b10a (diff) | |
drm/amd/display: Set link rate set if eDP ver >= 1.4.
[Why]
If eDP ver >= 1.4,
the Source device must use LINK_RATE_SET.
[How]
Get LINK_RATE_SET by reading DPCD 10h-1fh,
then write DPCD 00115h before link training.
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>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dc.h')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dc.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h index f80f52ef4b01..1c46249c8240 100644 --- a/drivers/gpu/drm/amd/display/dc/dc.h +++ b/drivers/gpu/drm/amd/display/dc/dc.h @@ -659,6 +659,7 @@ struct dpcd_caps { int8_t branch_dev_name[6]; int8_t branch_hw_revision; int8_t branch_fw_revision[2]; + uint8_t link_rate_set; bool allow_invalid_MSA_timing_param; bool panel_mode_edp; |