diff --git a/plat/imx/common/include/imx_sip_svc.h b/plat/imx/common/include/imx_sip_svc.h
index 4ba7b87..4de2194 100644
--- a/plat/imx/common/include/imx_sip_svc.h
+++ b/plat/imx/common/include/imx_sip_svc.h
@@ -14,11 +14,17 @@
 #define IMX_SIP_SRTC			0xC2000002
 #define IMX_SIP_SRTC_SET_TIME		0x00
 
+#define IMX_SIP_WAKEUP_SRC		0xC2000009
+#define IMX_SIP_WAKEUP_SRC_SCU		0x1
+#define IMX_SIP_WAKEUP_SRC_IRQSTEER	0x2
+
 #if (defined(PLAT_IMX8QM) || defined(PLAT_IMX8QX))
 int imx_cpufreq_handler(uint32_t smc_fid, u_register_t x1,
 			u_register_t x2, u_register_t x3);
 int imx_srtc_handler(uint32_t smc_fid, void *handle, u_register_t x1,
 		     u_register_t x2, u_register_t x3, u_register_t x4);
+int imx_wakeup_src_handler(uint32_t smc_fid, u_register_t x1,
+			   u_register_t x2, u_register_t x3);
 #endif
 
 #endif /* __IMX_SIP_SVC_H__ */