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| author |   Alex Deucher <alexander.deucher@amd.com> | 2013-04-01 16:06:25 -0400 |
|---|---|---|
| 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 | drm/radeon: don't use get_engine_clock() on APUs (diff) | |
| download | linux-dev-411678288d61ba17afe1f8afed92200be6bbc65d.tar.xz linux-dev-411678288d61ba17afe1f8afed92200be6bbc65d.zip | |
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 21a892c6ab9c..6d6fdb3ba0d0 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 { |