From 2044034adba9a93f2d9f128ea60958ae67993649 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Thu, 19 Apr 2012 10:48:38 -0400 Subject: [PATCH] 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 Signed-off-by: Dave Airlie [bwh: Backported to 3.2: drop the ASIC_IS_DCE61() case] Signed-off-by: Ben Hutchings --- drivers/gpu/drm/radeon/atombios_crtc.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c b/drivers/gpu/drm/radeon/atombios_crtc.c index a4011b0bd3e4..ee9d363b61d6 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; -- 2.39.5