diff --git a/plat/rockchip/rk3399/drivers/soc/soc.c b/plat/rockchip/rk3399/drivers/soc/soc.c
index 9529cb2..f77b74f 100644
--- a/plat/rockchip/rk3399/drivers/soc/soc.c
+++ b/plat/rockchip/rk3399/drivers/soc/soc.c
@@ -192,6 +192,28 @@
 /* pll suspend */
 struct deepsleep_data_s slp_data;
 
+void secure_watchdog_disable(void)
+{
+	slp_data.sgrf_con[3] = mmio_read_32(SGRF_BASE + SGRF_SOC_CON3_7(3));
+
+	/* disable CA53 wdt pclk */
+	mmio_write_32(SGRF_BASE + SGRF_SOC_CON3_7(3),
+		      BITS_WITH_WMASK(WDT_CA53_DIS, WDT_CA53_1BIT_MASK,
+				      PCLK_WDT_CA53_GATE_SHIFT));
+	/* disable CM0 wdt pclk */
+	mmio_write_32(SGRF_BASE + SGRF_SOC_CON3_7(3),
+		      BITS_WITH_WMASK(WDT_CM0_DIS, WDT_CM0_1BIT_MASK,
+				      PCLK_WDT_CM0_GATE_SHIFT));
+}
+
+void secure_watchdog_restore(void)
+{
+	mmio_write_32(SGRF_BASE + SGRF_SOC_CON3_7(3),
+		      slp_data.sgrf_con[3] |
+		      WMSK_BIT(PCLK_WDT_CA53_GATE_SHIFT) |
+		      WMSK_BIT(PCLK_WDT_CM0_GATE_SHIFT));
+}
+
 static void pll_suspend_prepare(uint32_t pll_id)
 {
 	int i;