openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

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>
This commit is contained in:
Alex Deucher 2013-01-31 09:01:59 -05:00
parent ed39fadd6d
commit 39dc9aabd8
1 changed files with 2 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/gpu/drm/radeon/rv515.c
View File

@ -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)