Commit 41167828 authored by Alex Deucher's avatar Alex Deucher

drm/radeon: use frac fb div on RS780/RS880

Monitors seem to prefer it.  Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=37696Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
parent bf05d998
......@@ -557,6 +557,9 @@ 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;
/* use frac fb div on RS780/RS880 */
if ((rdev->family == CHIP_RS780) || (rdev->family == CHIP_RS880))
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 {
......
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