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drm/radeon/kms: pll tweaks for rv6xx

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Prefer minm over maxp.

Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=35994

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Alex Deucher 2011-04-07 10:31:25 -04:00 committed by Dave Airlie
parent 88a2b75cce
commit 9bb09fa1b5
1 changed files with 6 additions and 0 deletions
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6
drivers/gpu/drm/radeon/atombios_crtc.c
View file

@ -531,6 +531,12 @@ static u32 atombios_adjust_pll(struct drm_crtc *crtc,
pll->flags |= RADEON_PLL_PREFER_HIGH_FB_DIV; pll->flags |= RADEON_PLL_PREFER_HIGH_FB_DIV;
else else
pll->flags |= RADEON_PLL_PREFER_LOW_REF_DIV; pll->flags |= RADEON_PLL_PREFER_LOW_REF_DIV;
if ((rdev->family == CHIP_R600) ||
(rdev->family == CHIP_RV610) ||
(rdev->family == CHIP_RV630) ||
(rdev->family == CHIP_RV670))
pll->flags |= RADEON_PLL_PREFER_MINM_OVER_MAXP;
} else { } else {
pll->flags |= RADEON_PLL_LEGACY; pll->flags |= RADEON_PLL_LEGACY;