diff options
| author |   Harry Wentland <harry.wentland@amd.com> | 2017-11-21 13:34:48 -0500 |
|---|---|---|
| committer |   Alex Deucher <alexander.deucher@amd.com> | 2018-05-15 13:44:02 -0500 |
| commit | 48231fd51667a89514d0eaba893ae0743fd0877d (patch) | |
| tree | bc65ac6c9f42e5f20643274fbdb30b9493a50c43 /drivers/gpu/drm/amd/display | |
| parent | drm/amdgpu: Add VEGAM support to the legacy DCE 11 module (diff) | |
| download | linux-dev-48231fd51667a89514d0eaba893ae0743fd0877d.tar.xz linux-dev-48231fd51667a89514d0eaba893ae0743fd0877d.zip | |
drm/amd/display: Use HBR2 if eDP monitor it doesn't advertise link rate
Some eDP displays use the extra link rate table to advertise link rate
support. If they do that they don't need to provide link rate through
the usual registers. Since we don't currently have support for the extra
link rate table default to HBR2 for the display in this.
Note that this is a HACK. Ultimately we need to teach DC to use the
extra link rate table.
Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c index 07cc4385a7c1..0a190c2b6898 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c @@ -2393,6 +2393,10 @@ bool detect_dp_sink_caps(struct dc_link *link) void detect_edp_sink_caps(struct dc_link *link) { retrieve_link_cap(link); + + if (link->reported_link_cap.link_rate == LINK_RATE_UNKNOWN) + link->reported_link_cap.link_rate = LINK_RATE_HIGH2; + link->verified_link_cap = link->reported_link_cap; } |