diff --git a/plat/imx/common/sci/imx8_mu.c b/plat/imx/common/sci/imx8_mu.c
index 26d9bdf..66e956d 100644
--- a/plat/imx/common/sci/imx8_mu.c
+++ b/plat/imx/common/sci/imx8_mu.c
@@ -8,6 +8,21 @@
 
 #include "imx8_mu.h"
 
+void MU_Resume(uint32_t base)
+{
+	uint32_t reg, i;
+
+	reg = mmio_read_32(base + MU_ACR_OFFSET1);
+	/* Clear GIEn, RIEn, TIEn, GIRn and ABFn. */
+	reg &= ~(MU_CR_GIEn_MASK1 | MU_CR_RIEn_MASK1 | MU_CR_TIEn_MASK1
+			| MU_CR_GIRn_MASK1 | MU_CR_Fn_MASK1);
+	mmio_write_32(base + MU_ACR_OFFSET1, reg);
+
+	/* Enable all RX interrupts */
+	for (i = 0; i < MU_RR_COUNT; i++)
+		MU_EnableRxFullInt(base, i);
+}
+
 void MU_EnableRxFullInt(uint32_t base, uint32_t index)
 {
 	uint32_t reg = mmio_read_32(base + MU_ACR_OFFSET1);