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| author | Christian König <christian.koenig@amd.com> | 2016-08-18 11:51:14 +0200 |
|---|---|---|
| committer | Sasha Levin <alexander.levin@verizon.com> | 2016-08-31 22:05:44 -0400 |
| commit | d1d55bb795bef7ebe88869a30c476351cb0c4b55 (patch) | |
| tree | cc5e4e7ba5c240d8ff73188c47ff4a4add57d4c4 /drivers | |
| parent | ffdb240a4379c1689af986a16c65dfac5d17aeb7 (diff) | |
| download | lwn-d1d55bb795bef7ebe88869a30c476351cb0c4b55.tar.gz lwn-d1d55bb795bef7ebe88869a30c476351cb0c4b55.zip | |
drm/radeon: only apply the SS fractional workaround to RS[78]80
[ Upstream commit ae5b80d2b68eac945b124227dea34462118a6f01 ]
Looks like some RV6xx have problems with that.
bug:
https://bugs.freedesktop.org/show_bug.cgi?id=97099
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/radeon/atombios_crtc.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c b/drivers/gpu/drm/radeon/atombios_crtc.c index ec2c80384fe4..e0780bf1138f 100644 --- a/drivers/gpu/drm/radeon/atombios_crtc.c +++ b/drivers/gpu/drm/radeon/atombios_crtc.c @@ -617,7 +617,9 @@ static u32 atombios_adjust_pll(struct drm_crtc *crtc, if (radeon_crtc->ss.refdiv) { radeon_crtc->pll_flags |= RADEON_PLL_USE_REF_DIV; radeon_crtc->pll_reference_div = radeon_crtc->ss.refdiv; - if (rdev->family >= CHIP_RV770) + if (ASIC_IS_AVIVO(rdev) && + rdev->family != CHIP_RS780 && + rdev->family != CHIP_RS880) radeon_crtc->pll_flags |= RADEON_PLL_USE_FRAC_FB_DIV; } } |