diff options
| author | Hersen Wu <hersenxs.wu@amd.com> | 2018-07-16 11:21:12 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2018-08-06 14:35:25 -0500 |
| commit | 9315e2399a2cdc236e8d42c1a21fb1071cdad03d (patch) | |
| tree | 16df902727cba4fba28c578b9c7da1cfe1de2971 /drivers/gpu/drm/amd/display/dc/dcn10/dcn10_resource.c | |
| parent | 5ae6fe572929587a304471bf4a641361a45152b5 (diff) | |
| download | linux-9315e2399a2cdc236e8d42c1a21fb1071cdad03d.tar.gz | |
drm/amd/display: Fix DP HBR2 Eye Diagram Pattern on Carrizo
[why] dp hbr2 eye diagram pattern for raven asic is not stabled.
workaround is to use tp4 pattern. But this should not be
applied to asic before raven.
[how] add new bool varilable in asic caps. for raven asic,
use the workaround. for carrizo, vega, do not use workaround.
Signed-off-by: Hersen Wu <hersenxs.wu@amd.com>
Reviewed-by: Harry Wentland <Harry.Wentland@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/dcn10/dcn10_resource.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dcn10/dcn10_resource.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_resource.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_resource.c index 5d169f07d745..6b44ed3697a4 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_resource.c +++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_resource.c @@ -1127,6 +1127,8 @@ static bool construct( dc->caps.max_slave_planes = 1; dc->caps.is_apu = true; dc->caps.post_blend_color_processing = false; + /* Raven DP PHY HBR2 eye diagram pattern is not stable. Use TP4 */ + dc->caps.force_dp_tps4_for_cp2520 = true; if (dc->ctx->dce_environment == DCE_ENV_PRODUCTION_DRV) dc->debug = debug_defaults_drv; |