diff options
| author | Alex Deucher <alexander.deucher@amd.com> | 2012-04-19 10:48:38 -0400 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2013-01-03 03:33:30 +0000 |
| commit | 2044034adba9a93f2d9f128ea60958ae67993649 (patch) | |
| tree | 2f7b0fa93523d612c67d15f6109293d83c530c18 | |
| parent | a36e1a6f1ce4234961ebfa3c595adaf413c10251 (diff) | |
drm/radeon/kms: use frac fb div on APUs
commit 37d4174d2d252c37dcb3d88cafae488542087848 upstream.
Seems to be more stable on certain monitors.
Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=48880
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
[bwh: Backported to 3.2: drop the ASIC_IS_DCE61() case]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
| -rw-r--r-- | drivers/gpu/drm/radeon/atombios_crtc.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c b/drivers/gpu/drm/radeon/atombios_crtc.c index a4011b0bd3e..ee9d363b61d 100644 --- a/drivers/gpu/drm/radeon/atombios_crtc.c +++ b/drivers/gpu/drm/radeon/atombios_crtc.c @@ -541,6 +541,9 @@ static u32 atombios_adjust_pll(struct drm_crtc *crtc, if (rdev->family < CHIP_RV770) pll->flags |= RADEON_PLL_PREFER_MINM_OVER_MAXP; + /* use frac fb div on APUs */ + if (ASIC_IS_DCE41(rdev)) + pll->flags |= RADEON_PLL_USE_FRAC_FB_DIV; } else { pll->flags |= RADEON_PLL_LEGACY; |