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drm/radeon/kms: add module option for pcie gen2

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Switching to pcie gen2 causes problems on some
boards.  Add a module option to turn it on/off.

There are gen2 compatability issues with some
motherboards it seems.

Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=33027

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Alex Deucher 2011-01-12 20:05:11 -05:00 • committed by Dave Airlie
parent 394d83c17f
commit d42dd579ac
5 changed files with 14 additions and 0 deletions
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3
drivers/gpu/drm/radeon/r600.c
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@ -3658,6 +3658,9 @@ static void r600_pcie_gen2_enable(struct radeon_device *rdev)
u32 link_width_cntl, lanes, speed_cntl, training_cntl, tmp;
u16 link_cntl2;
if (radeon_pcie_gen2 == 0)
return;
if (rdev->flags & RADEON_IS_IGP)
return;