DP_SYNC_VS_HIGH  1430 drivers/gpu/drm/gma500/psb_intel_reg.h #define   DP_SYNC_VS_HIGH		(1 << 4)
DP_SYNC_VS_HIGH  5484 drivers/gpu/drm/i915/i915_reg.h #define   DP_SYNC_VS_HIGH		(1 << 4)