Commit 39dc9aab authored by Alex Deucher's avatar Alex Deucher

drm/radeon/r5xx-r7xx: 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. Stop DMAR errors
reported by Shuah Khan.
Reported-by: default avatarShuah Khan <shuahkhan@gmail.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent ed39fadd
...@@ -336,6 +336,8 @@ void rv515_mc_stop(struct radeon_device *rdev, struct rv515_mc_save *save) ...@@ -336,6 +336,8 @@ void rv515_mc_stop(struct radeon_device *rdev, struct rv515_mc_save *save)
WREG32(R600_CITF_CNTL, blackout); WREG32(R600_CITF_CNTL, blackout);
} }
} }
/* wait for the MC to settle */
udelay(100);
} }
void rv515_mc_resume(struct radeon_device *rdev, struct rv515_mc_save *save) void rv515_mc_resume(struct radeon_device *rdev, struct rv515_mc_save *save)
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment