diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h
index 3840a055c6be..9305c718d789 100644
--- a/include/drm/drm_dp_helper.h
+++ b/include/drm/drm_dp_helper.h
@@ -190,23 +190,15 @@
 # define DP_TRAIN_VOLTAGE_SWING_MASK	    0x3
 # define DP_TRAIN_VOLTAGE_SWING_SHIFT	    0
 # define DP_TRAIN_MAX_SWING_REACHED	    (1 << 2)
-# define DP_TRAIN_VOLTAGE_SWING_400	    (0 << 0)
 # define DP_TRAIN_VOLTAGE_SWING_LEVEL_0 (0 << 0)
-# define DP_TRAIN_VOLTAGE_SWING_600	    (1 << 0)
 # define DP_TRAIN_VOLTAGE_SWING_LEVEL_1 (1 << 0)
-# define DP_TRAIN_VOLTAGE_SWING_800	    (2 << 0)
 # define DP_TRAIN_VOLTAGE_SWING_LEVEL_2 (2 << 0)
-# define DP_TRAIN_VOLTAGE_SWING_1200	    (3 << 0)
 # define DP_TRAIN_VOLTAGE_SWING_LEVEL_3 (3 << 0)
 
 # define DP_TRAIN_PRE_EMPHASIS_MASK	    (3 << 3)
-# define DP_TRAIN_PRE_EMPHASIS_0	    (0 << 3)
 # define DP_TRAIN_PRE_EMPH_LEVEL_0		(0 << 3)
-# define DP_TRAIN_PRE_EMPHASIS_3_5	    (1 << 3)
 # define DP_TRAIN_PRE_EMPH_LEVEL_1		(1 << 3)
-# define DP_TRAIN_PRE_EMPHASIS_6	    (2 << 3)
 # define DP_TRAIN_PRE_EMPH_LEVEL_2		(2 << 3)
-# define DP_TRAIN_PRE_EMPHASIS_9_5	    (3 << 3)
 # define DP_TRAIN_PRE_EMPH_LEVEL_3		(3 << 3)
 
 # define DP_TRAIN_PRE_EMPHASIS_SHIFT	    3