We met similar issue on CI(SWDEV-103046). In high refresh rate, Dal need to notify powerpaly the min_mclk. Best Regards Rex -----Original Message----- From: amd-gfx [mailto:amd-gfx-bounces@xxxxxxxxxxxxxxxxxxxxx] On Behalf Of Alex Deucher Sent: Wednesday, May 24, 2017 5:27 AM To: amd-gfx at lists.freedesktop.org Cc: Deucher, Alexander Subject: [PATCH 4/4] 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 Signed-off-by: Alex Deucher <alexander.deucher at amd.com> --- drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c index 1445c51..102eb6d 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; -- 2.5.5 _______________________________________________ amd-gfx mailing list amd-gfx at lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/amd-gfx
