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In commit bfb9faab8 we added a workaround for some BXT BIOS that fail to properly initialize the DDI_A_4_LANES bit of the control register (4 lanes is the only valid configuration on BXT since there is no DDI E to share with). A recent patch added some additional checks on this register bit before the workaround gets applied; this breaks eDP on BXT in some settings. Some minor code shuffling is all we need to restore the workaround. Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Fixes: 7cd87cb80 ("drm/i915: Check max number of lanes when registering DDI ports") Signed-off-by: Matt Roper <matthew.d.roper@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1454022577-834-1-git-send-email-matthew.d.roper@intel.com Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> |
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