#define  TRANS_DP_HSYNC_ACTIVE_LOW     0
 #define  TRANS_DP_SYNC_MASK    (3 << 3)
 
+#define _TRANS_DP2_CTL_A                       0x600a0
+#define _TRANS_DP2_CTL_B                       0x610a0
+#define _TRANS_DP2_CTL_C                       0x620a0
+#define _TRANS_DP2_CTL_D                       0x630a0
+#define TRANS_DP2_CTL(trans)                   _MMIO_TRANS(trans, _TRANS_DP2_CTL_A, _TRANS_DP2_CTL_B)
+#define  TRANS_DP2_128B132B_CHANNEL_CODING     REG_BIT(31)
+#define  TRANS_DP2_PANEL_REPLAY_ENABLE         REG_BIT(30)
+#define  TRANS_DP2_DEBUG_ENABLE                        REG_BIT(23)
+
 /* SNB eDP training params */
 /* SNB A-stepping */
 #define  EDP_LINK_TRAIN_400MV_0DB_SNB_A                (0x38 << 22)