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drm/radeon/kms: disable ss fixed ref divide

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Seems to cause problems on certain laptops

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

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Tested-by: Luca Tettamanti <kronos.it@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Alex Deucher 2010-12-12 23:27:23 -05:00 committed by Dave Airlie
parent 044102798d
commit e5fd205f28
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/radeon/atombios_crtc.c
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@ -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)