diff --git a/arch/arm/include/asm/hardware/cache-l2x0.h b/arch/arm/include/asm/hardware/cache-l2x0.h
index d6e608d0928..7dc7180123d 100644
--- a/arch/arm/include/asm/hardware/cache-l2x0.h
+++ b/arch/arm/include/asm/hardware/cache-l2x0.h
@@ -90,6 +90,7 @@
 #define L2X0_AUX_CTRL_ASSOCIATIVITY_SHIFT	16
 #define L2X0_AUX_CTRL_WAY_SIZE_SHIFT		17
 #define L2X0_AUX_CTRL_WAY_SIZE_MASK		(0x7 << 17)
+#define L2X0_AUX_CTRL_EVNT_MON_BUS_EN_SHIFT	20
 #define L2X0_AUX_CTRL_SHARE_OVERRIDE_SHIFT	22
 #define L2X0_AUX_CTRL_L2_FORCE_NWA_SHIFT	23
 #define L2X0_AUX_CTRL_NS_LOCKDOWN_SHIFT		26