diff --git a/board/mv_feroceon/mv_kw2/kw2_family/boardEnv/mvBoardEnvSpec.c b/board/mv_feroceon/mv_kw2/kw2_family/boardEnv/mvBoardEnvSpec.c
index 36adfc2..ace6787 100644
--- a/board/mv_feroceon/mv_kw2/kw2_family/boardEnv/mvBoardEnvSpec.c
+++ b/board/mv_feroceon/mv_kw2/kw2_family/boardEnv/mvBoardEnvSpec.c
@@ -1706,5 +1706,6 @@
 	&rd88f6601Info,
 	&gflt200Info,
 	&gflt110Info,
+	NULL,  /* unsupported RD_88F6601_MC2L_ID */
 	&gflt300Info,
 };
diff --git a/board/mv_feroceon/mv_kw2/kw2_family/boardEnv/mvBoardEnvSpec.h b/board/mv_feroceon/mv_kw2/kw2_family/boardEnv/mvBoardEnvSpec.h
index d56db53..a12ad38 100644
--- a/board/mv_feroceon/mv_kw2/kw2_family/boardEnv/mvBoardEnvSpec.h
+++ b/board/mv_feroceon/mv_kw2/kw2_family/boardEnv/mvBoardEnvSpec.h
@@ -110,8 +110,9 @@
 #define DB_CUSTOMER_ID			(BOARD_ID_BASE+0x7)
 #define GFLT200_ID			DB_CUSTOMER_ID
 #define GFLT110_ID			DB_CUSTOMER_ID + 1
-#define GFLT300_ID			DB_CUSTOMER_ID + 2
-#define MV_MAX_BOARD_ID			(DB_CUSTOMER_ID + 3)
+#define RD_88F6601_MC2L_ID		DB_CUSTOMER_ID + 2   /* for an upstream kernel */
+#define GFLT300_ID			DB_CUSTOMER_ID + 3
+#define MV_MAX_BOARD_ID			(DB_CUSTOMER_ID + 4)
 
 /***************************************************************************
 ** RD-88F6510-SFU