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authorAlex Deucher <alexander.deucher@amd.com>2012-11-13 18:03:41 -0500
committerAlex Deucher <alexander.deucher@amd.com>2012-12-07 19:48:22 -0500
commita02dc74b317d78298cb0587b9b1f6f741fd5c139 (patch)
tree78d91ffdc54c1419457c9d06b1b4376da12b867d /drivers/gpu/drm/radeon/atombios_crtc.c
parent0d0b3e7443bed6b49cb90fe7ddc4b5578a83a88d (diff)
drm/radeon/dce32+: use fractional fb dividers for high clocks
Fixes flickering with some high res montiors. Signed-off-by: Alex Deucher <alexander.deucher@amd.com> CC: stable@vger.kernel.org
Diffstat (limited to 'drivers/gpu/drm/radeon/atombios_crtc.c')
-rw-r--r--drivers/gpu/drm/radeon/atombios_crtc.c2
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 24d932f5320..9175615bbd8 100644
--- a/drivers/gpu/drm/radeon/atombios_crtc.c
+++ b/drivers/gpu/drm/radeon/atombios_crtc.c
@@ -561,6 +561,8 @@ static u32 atombios_adjust_pll(struct drm_crtc *crtc,
/* use frac fb div on APUs */
if (ASIC_IS_DCE41(rdev) || ASIC_IS_DCE61(rdev))
radeon_crtc->pll_flags |= RADEON_PLL_USE_FRAC_FB_DIV;
+ if (ASIC_IS_DCE32(rdev) && mode->clock > 165000)
+ radeon_crtc->pll_flags |= RADEON_PLL_USE_FRAC_FB_DIV;
} else {
radeon_crtc->pll_flags |= RADEON_PLL_LEGACY;