diff --git a/plat/arm/board/tc/include/platform_def.h b/plat/arm/board/tc/include/platform_def.h
index 11762d4..366a44e 100644
--- a/plat/arm/board/tc/include/platform_def.h
+++ b/plat/arm/board/tc/include/platform_def.h
@@ -220,9 +220,14 @@
 #define PLAT_MAX_CPUS_PER_CLUSTER	U(8)
 #define PLAT_MAX_PE_PER_CPU		U(1)
 
+/* Message Handling Unit (MHU) base addresses */
 #define PLAT_CSS_MHU_BASE		UL(0x45400000)
 #define PLAT_MHUV2_BASE			PLAT_CSS_MHU_BASE
 
+/* TC2: AP<->RSS MHUs */
+#define PLAT_RSS_AP_SND_MHU_BASE	UL(0x2A840000)
+#define PLAT_RSS_AP_RCV_MHU_BASE	UL(0x2A850000)
+
 #define CSS_SYSTEM_PWR_DMN_LVL		ARM_PWR_LVL2
 #define PLAT_MAX_PWR_LVL		ARM_PWR_LVL1