From: Alex Deucher Date: Tue, 13 Nov 2012 23:03:41 +0000 (-0500) Subject: drm/radeon/dce32+: use fractional fb dividers for high clocks X-Git-Tag: v3.8-rc1~42^2~12^2~3 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=a02dc74b317d78298cb0587b9b1f6f741fd5c139;p=profile%2Fivi%2Fkernel-adaptation-intel-automotive.git drm/radeon/dce32+: use fractional fb dividers for high clocks Fixes flickering with some high res montiors. Signed-off-by: Alex Deucher CC: stable@vger.kernel.org --- diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c b/drivers/gpu/drm/radeon/atombios_crtc.c index 24d932f..9175615 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;