drm/i915/bxt: Don't reprogram an already enabled DDI PHY

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If BIOS has already programmed and enabled a PHY, don't reprogram it as
that may interfere with the currently active outputs. A follow-up patch
will add state verification, so we can catch any misconfiguration on
BIOS's behalf.

Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1459515767-29228-14-git-send-email-imre.deak@intel.com

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Imre Deak 2016-04-01 16:02:44 +03:00

parent c2e001ef84

commit bd48006178

1 changed files with 40 additions and 0 deletions

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drivers/gpu/drm/i915/intel_ddi.c

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