diff --git a/boards/arm/s32k3xx/mr-canhubk3/include/board.h b/boards/arm/s32k3xx/mr-canhubk3/include/board.h
index be0c9a23402..9f9a9be7e07 100644
--- a/boards/arm/s32k3xx/mr-canhubk3/include/board.h
+++ b/boards/arm/s32k3xx/mr-canhubk3/include/board.h
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/s32k3xx/mr-canhubk3/include/board.h
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * 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
diff --git a/boards/arm/s32k3xx/mr-canhubk3/kernel/Makefile b/boards/arm/s32k3xx/mr-canhubk3/kernel/Makefile
index 134428177fe..7307ad8f48c 100644
--- a/boards/arm/s32k3xx/mr-canhubk3/kernel/Makefile
+++ b/boards/arm/s32k3xx/mr-canhubk3/kernel/Makefile
@@ -1,6 +1,8 @@
 ############################################################################
 # boards/arm/s32k3xx/mr-canhubk3/kernel/Makefile
 #
+# SPDX-License-Identifier: Apache-2.0
+#
 # 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
diff --git a/boards/arm/s32k3xx/mr-canhubk3/kernel/s32k3xx_userspace.c b/boards/arm/s32k3xx/mr-canhubk3/kernel/s32k3xx_userspace.c
index 0d113201094..d3c82a5753f 100644
--- a/boards/arm/s32k3xx/mr-canhubk3/kernel/s32k3xx_userspace.c
+++ b/boards/arm/s32k3xx/mr-canhubk3/kernel/s32k3xx_userspace.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/s32k3xx/mr-canhubk3/kernel/s32k3xx_userspace.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * 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
diff --git a/boards/arm/s32k3xx/mr-canhubk3/scripts/Make.defs b/boards/arm/s32k3xx/mr-canhubk3/scripts/Make.defs
index 3e70c1e8d1f..49a3dedf7fd 100644
--- a/boards/arm/s32k3xx/mr-canhubk3/scripts/Make.defs
+++ b/boards/arm/s32k3xx/mr-canhubk3/scripts/Make.defs
@@ -1,6 +1,8 @@
 ############################################################################
 # boards/arm/s32k3xx/mr-canhubk3/scripts/Make.defs
 #
+# SPDX-License-Identifier: Apache-2.0
+#
 # 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
diff --git a/boards/arm/s32k3xx/mr-canhubk3/scripts/flash.ld b/boards/arm/s32k3xx/mr-canhubk3/scripts/flash.ld
index e16d34f3c6d..bd570bdaffa 100644
--- a/boards/arm/s32k3xx/mr-canhubk3/scripts/flash.ld
+++ b/boards/arm/s32k3xx/mr-canhubk3/scripts/flash.ld
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/s32k3xx/mr-canhubk3/scripts/flash.ld
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * 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
diff --git a/boards/arm/s32k3xx/mr-canhubk3/src/mr-canhubk3.h b/boards/arm/s32k3xx/mr-canhubk3/src/mr-canhubk3.h
index 7c4533bb24f..b90384646d4 100644
--- a/boards/arm/s32k3xx/mr-canhubk3/src/mr-canhubk3.h
+++ b/boards/arm/s32k3xx/mr-canhubk3/src/mr-canhubk3.h
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/s32k3xx/mr-canhubk3/src/mr-canhubk3.h
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * 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
diff --git a/boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_appinit.c b/boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_appinit.c
index 8f675dbcf20..82a872cb124 100644
--- a/boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_appinit.c
+++ b/boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_appinit.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_appinit.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * 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
diff --git a/boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_autoleds.c b/boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_autoleds.c
index 101c85b5f1c..e288aaff48b 100644
--- a/boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_autoleds.c
+++ b/boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_autoleds.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_autoleds.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * 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
diff --git a/boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_boot.c b/boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_boot.c
index e749d0aa1a7..91f49ff896b 100644
--- a/boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_boot.c
+++ b/boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_boot.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_boot.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * 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
diff --git a/boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_bringup.c b/boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_bringup.c
index a70991882f5..3451e088cbe 100644
--- a/boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_bringup.c
+++ b/boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_bringup.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_bringup.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * 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
diff --git a/boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_buttons.c b/boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_buttons.c
index 78b06601506..9adf42b4001 100644
--- a/boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_buttons.c
+++ b/boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_buttons.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_buttons.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * 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
diff --git a/boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_clockconfig.c b/boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_clockconfig.c
index bf2e7b3134e..a624fae4e7f 100644
--- a/boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_clockconfig.c
+++ b/boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_clockconfig.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_clockconfig.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * 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
diff --git a/boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_dma_alloc.c b/boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_dma_alloc.c
index 2100593200e..e6d49a0aad9 100644
--- a/boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_dma_alloc.c
+++ b/boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_dma_alloc.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_dma_alloc.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * 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
diff --git a/boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_i2c.c b/boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_i2c.c
index 9d08fedcaec..e2388f5f04f 100644
--- a/boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_i2c.c
+++ b/boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_i2c.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_i2c.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * 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
diff --git a/boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_periphclocks.c b/boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_periphclocks.c
index bf3de7599dd..f02f7774bf3 100644
--- a/boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_periphclocks.c
+++ b/boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_periphclocks.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_periphclocks.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * 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
diff --git a/boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_selftest.c b/boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_selftest.c
index 9d4a6443649..733e8230a7c 100644
--- a/boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_selftest.c
+++ b/boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_selftest.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_selftest.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * 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
diff --git a/boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_spi.c b/boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_spi.c
index 207c944ac4f..52bb62a1c64 100644
--- a/boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_spi.c
+++ b/boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_spi.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_spi.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * 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
diff --git a/boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_tja1153.c b/boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_tja1153.c
index f9f7339ed2b..ad3680d17ad 100644
--- a/boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_tja1153.c
+++ b/boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_tja1153.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_tja1153.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * 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
diff --git a/boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_userleds.c b/boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_userleds.c
index e4b3fe1123b..58d6c71eeac 100644
--- a/boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_userleds.c
+++ b/boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_userleds.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/s32k3xx/mr-canhubk3/src/s32k3xx_userleds.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * 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
diff --git a/boards/arm/s32k3xx/s32k344evb/include/board.h b/boards/arm/s32k3xx/s32k344evb/include/board.h
index b01896354d8..d4da6c08bfb 100644
--- a/boards/arm/s32k3xx/s32k344evb/include/board.h
+++ b/boards/arm/s32k3xx/s32k344evb/include/board.h
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/s32k3xx/s32k344evb/include/board.h
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * 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
diff --git a/boards/arm/s32k3xx/s32k344evb/scripts/Make.defs b/boards/arm/s32k3xx/s32k344evb/scripts/Make.defs
index a29f30a1143..a56507f027a 100644
--- a/boards/arm/s32k3xx/s32k344evb/scripts/Make.defs
+++ b/boards/arm/s32k3xx/s32k344evb/scripts/Make.defs
@@ -1,6 +1,8 @@
 ############################################################################
 # boards/arm/s32k3xx/s32k344evb/scripts/Make.defs
 #
+# SPDX-License-Identifier: Apache-2.0
+#
 # 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
diff --git a/boards/arm/s32k3xx/s32k344evb/scripts/flash.ld b/boards/arm/s32k3xx/s32k344evb/scripts/flash.ld
index d26f97e54ca..0c2d5cbfd56 100644
--- a/boards/arm/s32k3xx/s32k344evb/scripts/flash.ld
+++ b/boards/arm/s32k3xx/s32k344evb/scripts/flash.ld
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/s32k3xx/s32k344evb/scripts/flash.ld
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * 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
diff --git a/boards/arm/s32k3xx/s32k344evb/src/Makefile b/boards/arm/s32k3xx/s32k344evb/src/Makefile
index 325b4557635..620e02abc8c 100644
--- a/boards/arm/s32k3xx/s32k344evb/src/Makefile
+++ b/boards/arm/s32k3xx/s32k344evb/src/Makefile
@@ -1,6 +1,8 @@
 ############################################################################
 # boards/arm/s32k3xx/s32k344evb/src/Makefile
 #
+# SPDX-License-Identifier: Apache-2.0
+#
 # 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
diff --git a/boards/arm/s32k3xx/s32k344evb/src/s32k344evb.h b/boards/arm/s32k3xx/s32k344evb/src/s32k344evb.h
index 3e8527e9d73..c72265c6a42 100644
--- a/boards/arm/s32k3xx/s32k344evb/src/s32k344evb.h
+++ b/boards/arm/s32k3xx/s32k344evb/src/s32k344evb.h
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/s32k3xx/s32k344evb/src/s32k344evb.h
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * 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
diff --git a/boards/arm/s32k3xx/s32k344evb/src/s32k3xx_appinit.c b/boards/arm/s32k3xx/s32k344evb/src/s32k3xx_appinit.c
index e927f834b38..4e5d0cd6319 100644
--- a/boards/arm/s32k3xx/s32k344evb/src/s32k3xx_appinit.c
+++ b/boards/arm/s32k3xx/s32k344evb/src/s32k3xx_appinit.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/s32k3xx/s32k344evb/src/s32k3xx_appinit.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * 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
diff --git a/boards/arm/s32k3xx/s32k344evb/src/s32k3xx_autoleds.c b/boards/arm/s32k3xx/s32k344evb/src/s32k3xx_autoleds.c
index 3d4b584c664..17ed54f4658 100644
--- a/boards/arm/s32k3xx/s32k344evb/src/s32k3xx_autoleds.c
+++ b/boards/arm/s32k3xx/s32k344evb/src/s32k3xx_autoleds.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/s32k3xx/s32k344evb/src/s32k3xx_autoleds.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * 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
diff --git a/boards/arm/s32k3xx/s32k344evb/src/s32k3xx_boot.c b/boards/arm/s32k3xx/s32k344evb/src/s32k3xx_boot.c
index 40c4305a3da..c2c0e6832b8 100644
--- a/boards/arm/s32k3xx/s32k344evb/src/s32k3xx_boot.c
+++ b/boards/arm/s32k3xx/s32k344evb/src/s32k3xx_boot.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/s32k3xx/s32k344evb/src/s32k3xx_boot.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * 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
diff --git a/boards/arm/s32k3xx/s32k344evb/src/s32k3xx_bringup.c b/boards/arm/s32k3xx/s32k344evb/src/s32k3xx_bringup.c
index 14915834a5d..27f2e69651d 100644
--- a/boards/arm/s32k3xx/s32k344evb/src/s32k3xx_bringup.c
+++ b/boards/arm/s32k3xx/s32k344evb/src/s32k3xx_bringup.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/s32k3xx/s32k344evb/src/s32k3xx_bringup.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * 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
diff --git a/boards/arm/s32k3xx/s32k344evb/src/s32k3xx_buttons.c b/boards/arm/s32k3xx/s32k344evb/src/s32k3xx_buttons.c
index b4e0d7e9cc6..68eb872b8db 100644
--- a/boards/arm/s32k3xx/s32k344evb/src/s32k3xx_buttons.c
+++ b/boards/arm/s32k3xx/s32k344evb/src/s32k3xx_buttons.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/s32k3xx/s32k344evb/src/s32k3xx_buttons.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * 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
diff --git a/boards/arm/s32k3xx/s32k344evb/src/s32k3xx_clockconfig.c b/boards/arm/s32k3xx/s32k344evb/src/s32k3xx_clockconfig.c
index b918eeeaa91..4c2313c58c1 100644
--- a/boards/arm/s32k3xx/s32k344evb/src/s32k3xx_clockconfig.c
+++ b/boards/arm/s32k3xx/s32k344evb/src/s32k3xx_clockconfig.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/s32k3xx/s32k344evb/src/s32k3xx_clockconfig.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * 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
diff --git a/boards/arm/s32k3xx/s32k344evb/src/s32k3xx_i2c.c b/boards/arm/s32k3xx/s32k344evb/src/s32k3xx_i2c.c
index 727c1bd7113..051c401a39b 100644
--- a/boards/arm/s32k3xx/s32k344evb/src/s32k3xx_i2c.c
+++ b/boards/arm/s32k3xx/s32k344evb/src/s32k3xx_i2c.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/s32k3xx/s32k344evb/src/s32k3xx_i2c.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * 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
diff --git a/boards/arm/s32k3xx/s32k344evb/src/s32k3xx_periphclocks.c b/boards/arm/s32k3xx/s32k344evb/src/s32k3xx_periphclocks.c
index 6afe069173f..1ab2ada1460 100644
--- a/boards/arm/s32k3xx/s32k344evb/src/s32k3xx_periphclocks.c
+++ b/boards/arm/s32k3xx/s32k344evb/src/s32k3xx_periphclocks.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/s32k3xx/s32k344evb/src/s32k3xx_periphclocks.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * 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
diff --git a/boards/arm/s32k3xx/s32k344evb/src/s32k3xx_spi.c b/boards/arm/s32k3xx/s32k344evb/src/s32k3xx_spi.c
index a9db32aa1ef..cd55808256c 100644
--- a/boards/arm/s32k3xx/s32k344evb/src/s32k3xx_spi.c
+++ b/boards/arm/s32k3xx/s32k344evb/src/s32k3xx_spi.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/s32k3xx/s32k344evb/src/s32k3xx_spi.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * 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
diff --git a/boards/arm/s32k3xx/s32k344evb/src/s32k3xx_userleds.c b/boards/arm/s32k3xx/s32k344evb/src/s32k3xx_userleds.c
index 5919e96ffed..729e806ca40 100644
--- a/boards/arm/s32k3xx/s32k344evb/src/s32k3xx_userleds.c
+++ b/boards/arm/s32k3xx/s32k344evb/src/s32k3xx_userleds.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/s32k3xx/s32k344evb/src/s32k3xx_userleds.c
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * 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