diff --git a/plat/mediatek/mt8173/drivers/spm/spm.h b/plat/mediatek/mt8173/drivers/spm/spm.h
index f1e7674..4e78c72 100644
--- a/plat/mediatek/mt8173/drivers/spm/spm.h
+++ b/plat/mediatek/mt8173/drivers/spm/spm.h
@@ -129,6 +129,9 @@
 #define SPM_SLEEP_CA15_WFI2_EN			(SPM_BASE + 0xf18)
 #define SPM_SLEEP_CA15_WFI3_EN			(SPM_BASE + 0xf1c)
 
+#define AP_PLL_CON3		0x1020900c
+#define AP_PLL_CON4		0x10209010
+
 #define SPM_PROJECT_CODE	0xb16
 
 #define SPM_REGWR_EN		(1U << 0)