diff options
author | Alex Deucher <alexander.deucher@amd.com> | 2012-04-19 14:48:38 (GMT) |
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committer | Dave Airlie <airlied@redhat.com> | 2012-04-27 07:30:19 (GMT) |
commit | 37d4174d2d252c37dcb3d88cafae488542087848 (patch) | |
tree | 41ecaaf98e3bc615fdb39e7752102b0886da8652 | |
parent | df391c0df49560c7fceffbad5b9d083836d9f22f (diff) | |
download | linux-fsl-qoriq-37d4174d2d252c37dcb3d88cafae488542087848.tar.xz |
drm/radeon/kms: use frac fb div on APUs
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>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
-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 b5ff1f7..c5c31e0 100644 --- a/drivers/gpu/drm/radeon/atombios_crtc.c +++ b/drivers/gpu/drm/radeon/atombios_crtc.c @@ -575,6 +575,9 @@ 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) || ASIC_IS_DCE61(rdev)) + pll->flags |= RADEON_PLL_USE_FRAC_FB_DIV; } else { pll->flags |= RADEON_PLL_LEGACY; |