diff options
| author |   Jerry (Fangzhi) Zuo <Jerry.Zuo@amd.com> | 2018-07-31 15:15:38 -0400 |
|---|---|---|
| committer |   Alex Deucher <alexander.deucher@amd.com> | 2018-08-13 17:22:08 -0500 |
| commit | 7cb5285507172fabe87f87ef3d2cfe148e8a918d (patch) | |
| tree | 70b84acb87e17abeb4d5dd55cb043a2cb7abaf50 /drivers/gpu/drm/amd | |
| parent | drm/amd/display: fix single link DVI has no display (diff) | |
| download | linux-dev-7cb5285507172fabe87f87ef3d2cfe148e8a918d.tar.xz linux-dev-7cb5285507172fabe87f87ef3d2cfe148e8a918d.zip | |
drm/amd/display: Fix warning observed in mode change on Vega
[Why]
DOUBLE_BUFFER_EN bit is getting cleared before enable blanking.
That leads to CRTC_BLANK_DATA_EN is getting updated immediately.
[How]
Get DOUBLE_BUFFER_EN bit set, the same as DCE110.
Signed-off-by: Jerry (Fangzhi) Zuo <Jerry.Zuo@amd.com>
Reviewed-by: Charlene Liu <Charlene.Liu@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')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dce120/dce120_timing_generator.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dce120/dce120_timing_generator.c b/drivers/gpu/drm/amd/display/dc/dce120/dce120_timing_generator.c index 2ea490f8482e..04b866f0fa1f 100644 --- a/drivers/gpu/drm/amd/display/dc/dce120/dce120_timing_generator.c +++ b/drivers/gpu/drm/amd/display/dc/dce120/dce120_timing_generator.c @@ -772,7 +772,7 @@ void dce120_tg_set_blank(struct timing_generator *tg, CRTC_REG_SET( CRTC0_CRTC_DOUBLE_BUFFER_CONTROL, - CRTC_BLANK_DATA_DOUBLE_BUFFER_EN, 0); + CRTC_BLANK_DATA_DOUBLE_BUFFER_EN, 1); if (enable_blanking) CRTC_REG_SET(CRTC0_CRTC_BLANK_CONTROL, CRTC_BLANK_DATA_EN, 1); |