diff --git a/plat/imx/common/sci/imx8_mu.h b/plat/imx/common/sci/imx8_mu.h
index 8c78877..edcac7b 100644
--- a/plat/imx/common/sci/imx8_mu.h
+++ b/plat/imx/common/sci/imx8_mu.h
@@ -33,3 +33,4 @@
 void MU_ReceiveMsg(uint32_t base, uint32_t regIndex, uint32_t *msg);
 void MU_EnableGeneralInt(uint32_t base, uint32_t index);
 void MU_EnableRxFullInt(uint32_t base, uint32_t index);
+void MU_Resume(uint32_t base);