drm/i915: Skip vswing programming for TBT
In thunderbolt mode the PHY is owned by the thunderbolt controller. We are not supposed to touch it. So skip the vswing programming as well (we already skipped the other steps not applicable to TBT). Touching this stuff could supposedly interfere with the PHY programming done by the thunderbolt controller. Cc: stable@vger.kernel.org Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210128155948.13678-1-ville.syrjala@linux.intel.comReviewed-by: Imre Deak <imre.deak@intel.com>
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