drm/radeon/evergreen+: wait for the MC to settle after MC blackout
authorAlex Deucher <alexander.deucher@amd.com>
Thu, 31 Jan 2013 14:00:52 +0000 (09:00 -0500)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Mon, 11 Feb 2013 16:47:17 +0000 (08:47 -0800)
commit36509fceeabafd1a6e95e48ae75efe020fa59937
treeeff15f3dd94b4bc078ad4a991a4f58e5e240deb1
parentb0cc9fb10c1b7240b229b40391f8da2a987995bd
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>
drivers/gpu/drm/radeon/evergreen.c