diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 3bcb11dbdb80..4fcf6ca695d6 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -5387,6 +5387,7 @@
 #define  GEN8_PIPE_CDCLK_CRC_DONE	(1 << 28)
 #define  XELPD_PIPE_SOFT_UNDERRUN	(1 << 22)
 #define  XELPD_PIPE_HARD_UNDERRUN	(1 << 21)
+#define  GEN12_PIPE_VBLANK_UNMOD	(1 << 19)
 #define  GEN8_PIPE_CURSOR_FAULT		(1 << 10)
 #define  GEN8_PIPE_SPRITE_FAULT		(1 << 9)
 #define  GEN8_PIPE_PRIMARY_FAULT	(1 << 8)