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| author | Nikola Cornij <nikola.cornij@amd.com> | 2019-10-29 15:49:28 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2019-11-19 10:12:52 -0500 |
| commit | cbd8394d3a97f6e7457f561bab5abc9c41b664e9 (patch) | |
| tree | a52fb31c9d498c9c355b7da5f81b0a2be973ebc7 /drivers/gpu/drm/amd/display | |
| parent | 5b956e9873cb3658fd29985c446404e3bc7ae5a7 (diff) | |
| download | linux-cbd8394d3a97f6e7457f561bab5abc9c41b664e9.tar.gz linux-cbd8394d3a97f6e7457f561bab5abc9c41b664e9.tar.bz2 linux-cbd8394d3a97f6e7457f561bab5abc9c41b664e9.zip | |
drm/amd/display: Connect DIG FE to its BE before link training starts
[why]
In SST mode no idle pattern will be generated after link training if
DIG FE is not connected to DIG BE.
Signed-off-by: Nikola Cornij <nikola.cornij@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@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.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c b/drivers/gpu/drm/amd/display/dc/core/dc_link.c index 1be427759771..49f3d0f67806 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c @@ -1546,6 +1546,10 @@ static enum dc_status enable_link_dp( panel_mode = dp_get_panel_mode(link); dp_set_panel_mode(link, panel_mode); + /* We need to do this before the link training to ensure the idle pattern in SST + * mode will be sent right after the link training */ + link->link_enc->funcs->connect_dig_be_to_fe(link->link_enc, + pipe_ctx->stream_res.stream_enc->id, true); skip_video_pattern = true; if (link_settings.link_rate == LINK_RATE_LOW) |