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| author | Alex Deucher <alexander.deucher@amd.com> | 2013-01-31 09:00:52 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-02-11 08:16:47 -0800 |
| commit | ed1d34ff0dc2d2a92764c1a6f07b4a182ef6b88a (patch) | |
| tree | 2af13f71ccfdde4f3c37f1abc09e57670ddb501d /drivers/gpu/drm | |
| parent | e1c63f9f42393f7c1dc072db7e0d54e599e96b46 (diff) | |
| download | kernel_samsung_smdk4412-ed1d34ff0dc2d2a92764c1a6f07b4a182ef6b88a.zip kernel_samsung_smdk4412-ed1d34ff0dc2d2a92764c1a6f07b4a182ef6b88a.tar.gz kernel_samsung_smdk4412-ed1d34ff0dc2d2a92764c1a6f07b4a182ef6b88a.tar.bz2 | |
drm/radeon/evergreen+: wait for the MC to settle after MC blackout
commit ed39fadd6df01095378e499fac3674883f16b853 upstream.
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=57567
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/radeon/evergreen.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c index 314e217..a75d290 100644 --- a/drivers/gpu/drm/radeon/evergreen.c +++ b/drivers/gpu/drm/radeon/evergreen.c @@ -1065,6 +1065,8 @@ void evergreen_mc_stop(struct radeon_device *rdev, struct evergreen_mc_save *sav WREG32(EVERGREEN_D5VGA_CONTROL, 0); WREG32(EVERGREEN_D6VGA_CONTROL, 0); } + /* wait for the MC to settle */ + udelay(100); } void evergreen_mc_resume(struct radeon_device *rdev, struct evergreen_mc_save *save) |