diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index bf874ed..1e8720e 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -4564,6 +4564,9 @@
 #define   GLK_CL1_PWR_DOWN		REG_BIT(11)
 #define   GLK_CL0_PWR_DOWN		REG_BIT(10)
 
+#define CHICKEN_MISC_3		_MMIO(0x42088)
+#define   DP_MST_FEC_BS_JITTER_WA(trans)	REG_BIT(0 + (trans) - TRANSCODER_A)
+
 #define CHICKEN_MISC_4		_MMIO(0x4208c)
 #define   CHICKEN_FBC_STRIDE_OVERRIDE	REG_BIT(13)
 #define   CHICKEN_FBC_STRIDE_MASK	REG_GENMASK(12, 0)