| From | Kamal Mostafa <> | Subject | [PATCH 3.8 075/124] drm/radeon: disable ss on DP for DCE3.x | Date | Mon, 10 Feb 2014 11:40:15 -0800 |
| |
3.8.13.18 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Alex Deucher <alexander.deucher@amd.com>
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: Kamal Mostafa <kamal@canonical.com> --- drivers/gpu/drm/radeon/atombios_crtc.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c b/drivers/gpu/drm/radeon/atombios_crtc.c index ef32bf6..b997e79 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: -- 1.8.3.2
|