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| author | Ahzo <Ahzo@tutanota.com> | 2019-08-05 21:14:18 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-10-05 13:13:58 +0200 |
| commit | 06752109ced1e7c719d7dce9f12c9e67a93b62c7 (patch) | |
| tree | b83878edd92d6d1fff093f18e521f1f09c178c2d /drivers/gpu | |
| parent | 33e91a59bf8142a1459a9d9ec3e9a4353efd362e (diff) | |
| download | linux-stable-06752109ced1e7c719d7dce9f12c9e67a93b62c7.tar.gz linux-stable-06752109ced1e7c719d7dce9f12c9e67a93b62c7.tar.bz2 linux-stable-06752109ced1e7c719d7dce9f12c9e67a93b62c7.zip | |
drm/amd/powerplay/smu7: enforce minimal VBITimeout (v2)
[ Upstream commit f659bb6dae58c113805f92822e4c16ddd3156b79 ]
This fixes screen corruption/flickering on 75 Hz displays.
v2: make print statement debug only (Alex)
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=102646
Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Ahzo <Ahzo@tutanota.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c index 048757e8f494..d1919d343cce 100644 --- a/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c +++ b/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c @@ -4064,6 +4064,11 @@ static int smu7_program_display_gap(struct pp_hwmgr *hwmgr) data->frame_time_x2 = frame_time_in_us * 2 / 100; + if (data->frame_time_x2 < 280) { + pr_debug("%s: enforce minimal VBITimeout: %d -> 280\n", __func__, data->frame_time_x2); + data->frame_time_x2 = 280; + } + display_gap2 = pre_vbi_time_in_us * (ref_clock / 100); cgs_write_ind_register(hwmgr->device, CGS_IND_REG__SMC, ixCG_DISPLAY_GAP_CNTL2, display_gap2); |