diff --git a/arch/arm/src/imxrt/hardware/rt102x/imxrt102x_xbar.h b/arch/arm/src/imxrt/hardware/rt102x/imxrt102x_xbar.h
index 8de712949e..12f3a658ce 100644
--- a/arch/arm/src/imxrt/hardware/rt102x/imxrt102x_xbar.h
+++ b/arch/arm/src/imxrt/hardware/rt102x/imxrt102x_xbar.h
@@ -1,3 +1,23 @@
+/****************************************************************************
+ * arch/arm/src/imxrt/hardware/rt102x/imxrt102x_xbar.h
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ ****************************************************************************/
+
 /* XBAR Defines for IMXRT102x */
 
 /* XBARA1 Mux inputs (I values) *********************************************/
diff --git a/arch/arm/src/imxrt/hardware/rt105x/imxrt105x_xbar.h b/arch/arm/src/imxrt/hardware/rt105x/imxrt105x_xbar.h
index 56b35c1939..061040ac7b 100644
--- a/arch/arm/src/imxrt/hardware/rt105x/imxrt105x_xbar.h
+++ b/arch/arm/src/imxrt/hardware/rt105x/imxrt105x_xbar.h
@@ -1,3 +1,23 @@
+/****************************************************************************
+ * arch/arm/src/imxrt/hardware/rt105x/imxrt105x_xbar.h
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ ****************************************************************************/
+
 /* XBAR Defines for IMXRT1050 */
 
 /* XBARA1 Mux inputs (I values) *********************************************/
diff --git a/arch/arm/src/imxrt/hardware/rt106x/imxrt106x_xbar.h b/arch/arm/src/imxrt/hardware/rt106x/imxrt106x_xbar.h
index b997fe05fb..92f65e4a38 100644
--- a/arch/arm/src/imxrt/hardware/rt106x/imxrt106x_xbar.h
+++ b/arch/arm/src/imxrt/hardware/rt106x/imxrt106x_xbar.h
@@ -1,3 +1,23 @@
+/****************************************************************************
+ * arch/arm/src/imxrt/hardware/rt106x/imxrt106x_xbar.h
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ ****************************************************************************/
+
 /* XBAR Defines for IMXRT1060 */
 
 /* XBARA1 Mux inputs (I values) *********************************************/