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author | Alex Deucher <alexander.deucher@amd.com> | 2013-04-01 16:06:25 -0400 |
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committer | Alex Deucher <alexander.deucher@amd.com> | 2013-04-01 16:06:25 -0400 |
commit | 411678288d61ba17afe1f8afed92200be6bbc65d (patch) | |
tree | 360dba148e2d336d3bb17de2023851da03f06d5a /drivers/gpu/drm/radeon/atombios_crtc.c | |
parent | bf05d9985111f85ed6922c134567b96eb789283b (diff) | |
download | op-kernel-dev-411678288d61ba17afe1f8afed92200be6bbc65d.zip op-kernel-dev-411678288d61ba17afe1f8afed92200be6bbc65d.tar.gz |
drm/radeon: use frac fb div on RS780/RS880
Monitors seem to prefer it. Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=37696
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.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c b/drivers/gpu/drm/radeon/atombios_crtc.c index 21a892c..6d6fdb3 100644 --- a/drivers/gpu/drm/radeon/atombios_crtc.c +++ b/drivers/gpu/drm/radeon/atombios_crtc.c @@ -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 { |