diff --git a/drivers/sip_svc/sip_smc_intel_socfpga.c b/drivers/sip_svc/sip_smc_intel_socfpga.c
index c7cc599fef3..583708414a5 100644
--- a/drivers/sip_svc/sip_smc_intel_socfpga.c
+++ b/drivers/sip_svc/sip_smc_intel_socfpga.c
@@ -39,6 +39,7 @@ static bool intel_sip_smc_plat_func_id_valid(const struct device *dev, uint32_t
 		case SMC_FUNC_ID_REG_WRITE:
 		case SMC_FUNC_ID_REG_UPDATE:
 		case SMC_FUNC_ID_SET_HPS_BRIDGES:
+		case SMC_FUNC_ID_RSU_UPDATE_ADDR:
 			valid = true;
 			break;
 		default:
diff --git a/include/zephyr/drivers/sip_svc/sip_svc_agilex_smc.h b/include/zephyr/drivers/sip_svc/sip_svc_agilex_smc.h
index 88c9002af17..4e430e72bf9 100644
--- a/include/zephyr/drivers/sip_svc/sip_svc_agilex_smc.h
+++ b/include/zephyr/drivers/sip_svc/sip_svc_agilex_smc.h
@@ -55,6 +55,7 @@
 #define SMC_FUNC_ID_REG_WRITE	    0xC2000402
 #define SMC_FUNC_ID_REG_UPDATE	    0xC2000403
 #define SMC_FUNC_ID_SET_HPS_BRIDGES 0xC2000404
+#define SMC_FUNC_ID_RSU_UPDATE_ADDR 0xC2000405
 
 /* @brief ASYNC SMC Function IDs
  */