diff --git a/arch/arm/include/asm/arch-armada-xp/cpu.h b/arch/arm/include/asm/arch-armada-xp/cpu.h
index 6b60c21..4341799 100644
--- a/arch/arm/include/asm/arch-armada-xp/cpu.h
+++ b/arch/arm/include/asm/arch-armada-xp/cpu.h
@@ -96,6 +96,9 @@
 	u32 irq_level;
 };
 
+/* Needed for dynamic (board-specific) mbus configuration */
+extern struct mvebu_mbus_state mbus_state;
+
 /*
  * functions
  */