Commit ed39fadd authored by Alex Deucher's avatar Alex Deucher

drm/radeon/evergreen+: wait for the MC to settle after MC blackout

Some chips seem to need a little delay after blacking out
the MC before the requests actually stop.

May fix:
https://bugs.freedesktop.org/show_bug.cgi?id=56139
https://bugs.freedesktop.org/show_bug.cgi?id=57567Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
parent f689e3ac
...@@ -1349,6 +1349,8 @@ void evergreen_mc_stop(struct radeon_device *rdev, struct evergreen_mc_save *sav ...@@ -1349,6 +1349,8 @@ void evergreen_mc_stop(struct radeon_device *rdev, struct evergreen_mc_save *sav
blackout &= ~BLACKOUT_MODE_MASK; blackout &= ~BLACKOUT_MODE_MASK;
WREG32(MC_SHARED_BLACKOUT_CNTL, blackout | 1); WREG32(MC_SHARED_BLACKOUT_CNTL, blackout | 1);
} }
/* wait for the MC to settle */
udelay(100);
} }
void evergreen_mc_resume(struct radeon_device *rdev, struct evergreen_mc_save *save) void evergreen_mc_resume(struct radeon_device *rdev, struct evergreen_mc_save *save)
......
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