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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: Shuah Khan <shuahkhan@gmail.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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@ -336,6 +336,8 @@ void rv515_mc_stop(struct radeon_device *rdev, struct rv515_mc_save *save)
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WREG32(R600_CITF_CNTL, blackout);
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}
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}
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/* wait for the MC to settle */
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udelay(100);
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}
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void rv515_mc_resume(struct radeon_device *rdev, struct rv515_mc_save *save)
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