diff --git a/plat/rockchip/rk3399/drivers/pmu/pmu.c b/plat/rockchip/rk3399/drivers/pmu/pmu.c
index 6aeabfe..b8afd38 100644
--- a/plat/rockchip/rk3399/drivers/pmu/pmu.c
+++ b/plat/rockchip/rk3399/drivers/pmu/pmu.c
@@ -33,6 +33,7 @@
 #include <bakery_lock.h>
 #include <debug.h>
 #include <delay_timer.h>
+#include <dfs.h>
 #include <errno.h>
 #include <gpio.h>
 #include <mmio.h>
@@ -1076,6 +1077,7 @@
 	uint32_t wait_cnt = 0;
 	uint32_t status = 0;
 
+	ddr_prepare_for_sys_suspend();
 	dmc_save();
 	pmu_scu_b_pwrdn();
 
@@ -1219,6 +1221,8 @@
 
 	m0_stop();
 
+	ddr_prepare_for_sys_resume();
+
 	return 0;
 }