diff --git a/plat/mediatek/mt8188/include/platform_def.h b/plat/mediatek/mt8188/include/platform_def.h
index 576dc3d..fc9725e 100644
--- a/plat/mediatek/mt8188/include/platform_def.h
+++ b/plat/mediatek/mt8188/include/platform_def.h
@@ -28,6 +28,9 @@
  * APUSYS related constants
  ******************************************************************************/
 #define BCRM_FMEM_PDN_BASE	(IO_PHYS + 0x00276000)
+#define APU_RCX_CONFIG		(IO_PHYS + 0x09020000)
+#define APU_RCX_VCORE_CONFIG	(IO_PHYS + 0x090e0000)
+#define APU_MBOX0		(IO_PHYS + 0x090e1000)
 #define APU_RPCTOP		(IO_PHYS + 0x090f0000)
 #define APU_PCUTOP		(IO_PHYS + 0x090f1000)
 #define APU_AO_CTRL		(IO_PHYS + 0x090f2000)