diff --git a/lib/utils/ipi/andes_plicsw.c b/lib/utils/ipi/andes_plicsw.c
index dde39c0..5693efb 100644
--- a/lib/utils/ipi/andes_plicsw.c
+++ b/lib/utils/ipi/andes_plicsw.c
@@ -131,7 +131,9 @@ int plicsw_cold_ipi_init(struct plicsw_data *plicsw)
 	/* Add PLICSW region to the root domain */
 	rc = sbi_domain_root_add_memrange(plicsw->addr, plicsw->size,
 					  PLICSW_REGION_ALIGN,
-					  SBI_DOMAIN_MEMREGION_MMIO);
+					  SBI_DOMAIN_MEMREGION_MMIO |
+					  SBI_DOMAIN_MEMREGION_M_READABLE |
+					  SBI_DOMAIN_MEMREGION_M_WRITABLE);
 	if (rc)
 		return rc;
 
diff --git a/lib/utils/timer/andes_plmt.c b/lib/utils/timer/andes_plmt.c
index 94a86cc..6e4bfaf 100644
--- a/lib/utils/timer/andes_plmt.c
+++ b/lib/utils/timer/andes_plmt.c
@@ -81,8 +81,11 @@ int plmt_cold_timer_init(struct plmt_data *plmt)
 
 	/* Add PLMT region to the root domain */
 	rc = sbi_domain_root_add_memrange(
-		(unsigned long)plmt->time_val, plmt->size, PLMT_REGION_ALIGN,
-		SBI_DOMAIN_MEMREGION_MMIO | SBI_DOMAIN_MEMREGION_READABLE);
+		(unsigned long)plmt->time_val, plmt->size,
+		PLMT_REGION_ALIGN,
+		SBI_DOMAIN_MEMREGION_MMIO |
+		SBI_DOMAIN_MEMREGION_M_READABLE |
+		SBI_DOMAIN_MEMREGION_M_WRITABLE);
 	if (rc)
 		return rc;