diff --git a/drivers/arm/tzc/tzc400.c b/drivers/arm/tzc/tzc400.c
index 9fc1578..f1dacbb 100644
--- a/drivers/arm/tzc/tzc400.c
+++ b/drivers/arm/tzc/tzc400.c
@@ -68,6 +68,7 @@
 DEFINE_TZC_COMMON_WRITE_REGION_TOP(400, 400)
 DEFINE_TZC_COMMON_WRITE_REGION_ATTRIBUTES(400, 400)
 DEFINE_TZC_COMMON_WRITE_REGION_ID_ACCESS(400, 400)
+DEFINE_TZC_COMMON_UPDATE_FILTERS(400, 400)
 DEFINE_TZC_COMMON_CONFIGURE_REGION0(400)
 DEFINE_TZC_COMMON_CONFIGURE_REGION(400)
 
@@ -271,6 +272,15 @@
 						sec_attr, nsaid_permissions);
 }
 
+void tzc400_update_filters(unsigned int region, unsigned int filters)
+{
+	/* Do range checks on filters and regions. */
+	assert(((filters >> tzc400.num_filters) == 0U) &&
+	       (region < tzc400.num_regions));
+
+	_tzc400_update_filters(tzc400.base, region, tzc400.num_filters, filters);
+}
+
 void tzc400_enable_filters(void)
 {
 	unsigned int state;