diff options
| author | Jimmy Kizito <Jimmy.Kizito@amd.com> | 2021-04-07 18:56:19 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2021-10-06 15:51:34 -0400 |
| commit | edfb2693471f593856df915cd24c1b62ffaf978c (patch) | |
| tree | b0fe6fb3e619392d858fa7fa5c2df9b10d597219 /drivers/gpu/drm/amd/display/dc/core/dc_link.c | |
| parent | 31cf79f05d34f4a8040bbeaaf7f03b0fb5fe117f (diff) | |
| download | linux-edfb2693471f593856df915cd24c1b62ffaf978c.tar.bz2 | |
drm/amd/display: Train DPIA links with fallback
[Why & How]
Conventional links are trained with fallback during sink detection.
Have DPIA links trained with fallback too.
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Wayne Lin <Wayne.Lin@amd.com>
Acked-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Jimmy Kizito <Jimmy.Kizito@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/core/dc_link.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/core/dc_link.c | 6 |
1 files changed, 6 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 1c397d5551ba..6b5ddf0a29c1 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c @@ -1862,6 +1862,12 @@ static enum dc_status enable_link_dp(struct dc_state *state, /* get link settings for video mode timing */ decide_link_settings(stream, &link_settings); + /* Train with fallback when enabling DPIA link. Conventional links are + * trained with fallback during sink detection. + */ + if (link->ep_type == DISPLAY_ENDPOINT_USB4_DPIA) + do_fallback = true; + #if defined(CONFIG_DRM_AMD_DC_DCN) if (dp_get_link_encoding_format(&link_settings) == DP_128b_132b_ENCODING && pipe_ctx->stream->signal == SIGNAL_TYPE_DISPLAY_PORT) { |