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Commit e5fd205f authored by Alex Deucher's avatar Alex Deucher Committed by Dave Airlie
Browse files

drm/radeon/kms: disable ss fixed ref divide 

Seems to cause problems on certain laptops

Fixes:
https://bugzilla.kernel.org/show_bug.cgi?id=24462



Signed-off-by: default avatarAlex Deucher <alexdeucher@gmail.com>
Tested-by: default avatarLuca Tettamanti <kronos.it@gmail.com>
Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
parent 04410279

drivers/gpu/drm/radeon/atombios_crtc.c

+2 −2
Original line number Diff line number Diff line
@@ -530,7 +530,7 @@ static u32 atombios_adjust_pll(struct drm_crtc *crtc, 
					dp_clock = dig_connector->dp_clock;

				}

			}



#if 0 /* doesn't work properly on some laptops */

			/* use recommended ref_div for ss */

			if (radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT)) {

				if (ss_enabled) {
@@ -540,7 +540,7 @@ static u32 atombios_adjust_pll(struct drm_crtc *crtc, 
					}

				}

			}



#endif

			if (ASIC_IS_AVIVO(rdev)) {

				/* DVO wants 2x pixel clock if the DVO chip is in 12 bit mode */

				if (radeon_encoder->encoder_id == ENCODER_OBJECT_ID_INTERNAL_KLDSCP_DVO1)