diff options
| author | Alex Deucher <alexander.deucher@amd.com> | 2012-11-13 18:03:41 -0500 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2013-01-03 03:33:31 +0000 |
| commit | a0d3e01dadd633961769f2c388599b0b6f08c1df (patch) | |
| tree | c6e765f4d1086fe4ac8b9bd8c6c31a0aa4dd993d /drivers | |
| parent | 2044034adba9a93f2d9f128ea60958ae67993649 (diff) | |
drm/radeon/dce32+: use fractional fb dividers for high clocks
commit a02dc74b317d78298cb0587b9b1f6f741fd5c139 upstream.
Fixes flickering with some high res montiors.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
[bwh: Backported to 3.2: use pll->flags instead of radeon_crtc->pll_flags]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/radeon/atombios_crtc.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c b/drivers/gpu/drm/radeon/atombios_crtc.c index ee9d363b61d6..a25d08af62d8 100644 --- a/drivers/gpu/drm/radeon/atombios_crtc.c +++ b/drivers/gpu/drm/radeon/atombios_crtc.c @@ -544,6 +544,8 @@ static u32 atombios_adjust_pll(struct drm_crtc *crtc, /* use frac fb div on APUs */ if (ASIC_IS_DCE41(rdev)) pll->flags |= RADEON_PLL_USE_FRAC_FB_DIV; + if (ASIC_IS_DCE32(rdev) && mode->clock > 165000) + pll->flags |= RADEON_PLL_USE_FRAC_FB_DIV; } else { pll->flags |= RADEON_PLL_LEGACY; |