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| author | Alex Deucher <alexander.deucher@amd.com> | 2014-01-13 16:47:05 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-02-13 13:55:39 -0800 |
| commit | 3f235675a0b926df77f2be39065ef0c39f66039b (patch) | |
| tree | 7494ee06b77c8fb6ccebd54cad523869a7bd61c7 /drivers/gpu | |
| parent | 318729d307dc565a1c44bb02a8710b5a4f0b4037 (diff) | |
| download | linux-stable-3f235675a0b926df77f2be39065ef0c39f66039b.tar.gz linux-stable-3f235675a0b926df77f2be39065ef0c39f66039b.tar.bz2 linux-stable-3f235675a0b926df77f2be39065ef0c39f66039b.zip | |
drm/radeon: disable ss on DP for DCE3.x
commit d8e24525094200601236fa64a54cf73e3d682f2e upstream.
Seems to cause problems with certain DP monitors.
Bug:
https://bugs.freedesktop.org/show_bug.cgi?id=40699
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/radeon/atombios_crtc.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c b/drivers/gpu/drm/radeon/atombios_crtc.c index 0b9621c9aeea..762b660af5aa 100644 --- a/drivers/gpu/drm/radeon/atombios_crtc.c +++ b/drivers/gpu/drm/radeon/atombios_crtc.c @@ -938,11 +938,14 @@ static bool atombios_crtc_prepare_pll(struct drm_crtc *crtc, struct drm_display_ radeon_atombios_get_ppll_ss_info(rdev, &radeon_crtc->ss, ATOM_DP_SS_ID1); - } else + } else { radeon_crtc->ss_enabled = radeon_atombios_get_ppll_ss_info(rdev, &radeon_crtc->ss, ATOM_DP_SS_ID1); + } + /* disable spread spectrum on DCE3 DP */ + radeon_crtc->ss_enabled = false; } break; case ATOM_ENCODER_MODE_LVDS: |