diff options
| author | Alex Deucher <alexander.deucher@amd.com> | 2017-05-11 19:57:41 +0200 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2017-05-24 22:46:01 +0200 |
| commit | 2275a3a2fe9914ba6d76c8ea490da3c08342bd19 (patch) | |
| tree | d5db975f0fefeacb691c63a21e348c8ba4ea2754 /drivers/gpu | |
| parent | drm/amd/powerplay/smu7: add vblank check for mclk switching (v2) (diff) | |
| download | linux-2275a3a2fe9914ba6d76c8ea490da3c08342bd19.tar.xz linux-2275a3a2fe9914ba6d76c8ea490da3c08342bd19.zip | |
drm/amd/powerplay/smu7: disable mclk switching for high refresh rates
Even if the vblank period would allow it, it still seems to
be problematic on some cards.
bug: https://bugs.freedesktop.org/show_bug.cgi?id=96868
Cc: stable@vger.kernel.org
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c index 1445c51b6d05..102eb6d029fa 100644 --- a/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c +++ b/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c @@ -2793,7 +2793,8 @@ static int smu7_apply_state_adjust_rules(struct pp_hwmgr *hwmgr, disable_mclk_switching = ((1 < info.display_count) || disable_mclk_switching_for_frame_lock || - smu7_vblank_too_short(hwmgr, mode_info.vblank_time_us)); + smu7_vblank_too_short(hwmgr, mode_info.vblank_time_us) || + (mode_info.refresh_rate > 120)); sclk = smu7_ps->performance_levels[0].engine_clock; mclk = smu7_ps->performance_levels[0].memory_clock; |