diff --git a/plat/mediatek/drivers/apusys/apusys.c b/plat/mediatek/drivers/apusys/apusys.c
index 1d34627..c82b3a7 100644
--- a/plat/mediatek/drivers/apusys/apusys.c
+++ b/plat/mediatek/drivers/apusys/apusys.c
@@ -11,6 +11,35 @@
 #include "apusys.h"
 #include "apusys_power.h"
 #include <lib/mtk_init/mtk_init.h>
+#include <mtk_sip_svc.h>
+
+static u_register_t apusys_kernel_handler(u_register_t x1,
+					  u_register_t x2,
+					  u_register_t x3,
+					  u_register_t x4,
+					  void *handle,
+					  struct smccc_res *smccc_ret)
+{
+	uint32_t request_ops;
+	int32_t ret = -1;
+
+	request_ops = (uint32_t)x1;
+
+	switch (request_ops) {
+	case MTK_APUSYS_KERNEL_OP_APUSYS_PWR_TOP_ON:
+		ret = apusys_kernel_apusys_pwr_top_on();
+		break;
+	case MTK_APUSYS_KERNEL_OP_APUSYS_PWR_TOP_OFF:
+		ret = apusys_kernel_apusys_pwr_top_off();
+		break;
+	default:
+		ERROR(MODULE_TAG "%s unknown request_ops = %x\n", MODULE_TAG, request_ops);
+		break;
+	}
+
+	return ret;
+}
+DECLARE_SMC_HANDLER(MTK_SIP_APUSYS_CONTROL, apusys_kernel_handler);
 
 int apusys_init(void)
 {