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Commit 37d4174d authored by Alex Deucher's avatar Alex Deucher Committed by Dave Airlie
Browse files

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: default avatarAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
parent df391c0d

drivers/gpu/drm/radeon/atombios_crtc.c

+3 −0
Original line number Diff line number Diff line
@@ -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;