diff --git a/boards/arm/samd5e5/metro-m4/include/board.h b/boards/arm/samd5e5/metro-m4/include/board.h
index 3c4d700decd..55a1c692719 100644
--- a/boards/arm/samd5e5/metro-m4/include/board.h
+++ b/boards/arm/samd5e5/metro-m4/include/board.h
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/samd5e5/metro-m4/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/samd5e5/metro-m4/scripts/Make.defs b/boards/arm/samd5e5/metro-m4/scripts/Make.defs
index 0f3f23c0e9e..0de502b7d7f 100644
--- a/boards/arm/samd5e5/metro-m4/scripts/Make.defs
+++ b/boards/arm/samd5e5/metro-m4/scripts/Make.defs
@@ -1,6 +1,8 @@
 ############################################################################
 # boards/arm/samd5e5/metro-m4/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/samd5e5/metro-m4/scripts/flash.ld b/boards/arm/samd5e5/metro-m4/scripts/flash.ld
index 4ff0233fc15..bd0f092c509 100644
--- a/boards/arm/samd5e5/metro-m4/scripts/flash.ld
+++ b/boards/arm/samd5e5/metro-m4/scripts/flash.ld
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/samd5e5/metro-m4/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/samd5e5/metro-m4/scripts/nvm.c b/boards/arm/samd5e5/metro-m4/scripts/nvm.c
index d3c386d227e..80181e1993e 100644
--- a/boards/arm/samd5e5/metro-m4/scripts/nvm.c
+++ b/boards/arm/samd5e5/metro-m4/scripts/nvm.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/samd5e5/metro-m4/scripts/nvm.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/samd5e5/metro-m4/scripts/sram.ld b/boards/arm/samd5e5/metro-m4/scripts/sram.ld
index dd274120137..d0073a652a2 100644
--- a/boards/arm/samd5e5/metro-m4/scripts/sram.ld
+++ b/boards/arm/samd5e5/metro-m4/scripts/sram.ld
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/samd5e5/metro-m4/scripts/sram.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/samd5e5/metro-m4/src/Makefile b/boards/arm/samd5e5/metro-m4/src/Makefile
index ce13f2c6e7a..3fdbb2738dc 100644
--- a/boards/arm/samd5e5/metro-m4/src/Makefile
+++ b/boards/arm/samd5e5/metro-m4/src/Makefile
@@ -1,6 +1,8 @@
 ############################################################################
 # boards/arm/samd5e5/metro-m4/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/samd5e5/metro-m4/src/metro-m4.h b/boards/arm/samd5e5/metro-m4/src/metro-m4.h
index 8cfe3c3d2f6..d7122553c79 100644
--- a/boards/arm/samd5e5/metro-m4/src/metro-m4.h
+++ b/boards/arm/samd5e5/metro-m4/src/metro-m4.h
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/samd5e5/metro-m4/src/metro-m4.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/samd5e5/metro-m4/src/sam_appinit.c b/boards/arm/samd5e5/metro-m4/src/sam_appinit.c
index b4d16fd1bd1..a1b33869e14 100644
--- a/boards/arm/samd5e5/metro-m4/src/sam_appinit.c
+++ b/boards/arm/samd5e5/metro-m4/src/sam_appinit.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/samd5e5/metro-m4/src/sam_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/samd5e5/metro-m4/src/sam_at24.c b/boards/arm/samd5e5/metro-m4/src/sam_at24.c
index 38da046f442..67fb348216f 100644
--- a/boards/arm/samd5e5/metro-m4/src/sam_at24.c
+++ b/boards/arm/samd5e5/metro-m4/src/sam_at24.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/samd5e5/metro-m4/src/sam_at24.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/samd5e5/metro-m4/src/sam_autoleds.c b/boards/arm/samd5e5/metro-m4/src/sam_autoleds.c
index 226cd390e24..724a520744e 100644
--- a/boards/arm/samd5e5/metro-m4/src/sam_autoleds.c
+++ b/boards/arm/samd5e5/metro-m4/src/sam_autoleds.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/samd5e5/metro-m4/src/sam_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/samd5e5/metro-m4/src/sam_automount.c b/boards/arm/samd5e5/metro-m4/src/sam_automount.c
index d20cf39a60c..853898c8de6 100644
--- a/boards/arm/samd5e5/metro-m4/src/sam_automount.c
+++ b/boards/arm/samd5e5/metro-m4/src/sam_automount.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/samd5e5/metro-m4/src/sam_automount.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/samd5e5/metro-m4/src/sam_boot.c b/boards/arm/samd5e5/metro-m4/src/sam_boot.c
index e2fa161a1eb..65fbaf1c1d3 100644
--- a/boards/arm/samd5e5/metro-m4/src/sam_boot.c
+++ b/boards/arm/samd5e5/metro-m4/src/sam_boot.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/samd5e5/metro-m4/src/sam_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/samd5e5/metro-m4/src/sam_bq27426.c b/boards/arm/samd5e5/metro-m4/src/sam_bq27426.c
index 923b4ed09eb..34664d1619c 100644
--- a/boards/arm/samd5e5/metro-m4/src/sam_bq27426.c
+++ b/boards/arm/samd5e5/metro-m4/src/sam_bq27426.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/samd5e5/metro-m4/src/sam_bq27426.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
@@ -72,4 +74,4 @@ int sam_bq27426_initialize(const char *devname)
   return battery_gauge_register(devname, bq27426_m4);
 }
 
-#endif /* CONFIG_BQ27426 */
\ No newline at end of file
+#endif /* CONFIG_BQ27426 */
diff --git a/boards/arm/samd5e5/metro-m4/src/sam_bringup.c b/boards/arm/samd5e5/metro-m4/src/sam_bringup.c
index fd052b772ed..84b7e87fcda 100644
--- a/boards/arm/samd5e5/metro-m4/src/sam_bringup.c
+++ b/boards/arm/samd5e5/metro-m4/src/sam_bringup.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/samd5e5/metro-m4/src/sam_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/samd5e5/metro-m4/src/sam_composite.c b/boards/arm/samd5e5/metro-m4/src/sam_composite.c
index 7f6e640d6dc..b91a6547fbb 100644
--- a/boards/arm/samd5e5/metro-m4/src/sam_composite.c
+++ b/boards/arm/samd5e5/metro-m4/src/sam_composite.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/samd5e5/metro-m4/src/sam_composite.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/samd5e5/metro-m4/src/sam_gpio.c b/boards/arm/samd5e5/metro-m4/src/sam_gpio.c
index 6edf4c6cca4..6fd01b4508e 100644
--- a/boards/arm/samd5e5/metro-m4/src/sam_gpio.c
+++ b/boards/arm/samd5e5/metro-m4/src/sam_gpio.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/samd5e5/metro-m4/src/sam_gpio.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/samd5e5/metro-m4/src/sam_i2c.c b/boards/arm/samd5e5/metro-m4/src/sam_i2c.c
index 39e51b45ce6..ef559f41128 100644
--- a/boards/arm/samd5e5/metro-m4/src/sam_i2c.c
+++ b/boards/arm/samd5e5/metro-m4/src/sam_i2c.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/samd5e5/metro-m4/src/sam_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/samd5e5/metro-m4/src/sam_smartfs.c b/boards/arm/samd5e5/metro-m4/src/sam_smartfs.c
index c3fd8e3e629..89c4e03b086 100644
--- a/boards/arm/samd5e5/metro-m4/src/sam_smartfs.c
+++ b/boards/arm/samd5e5/metro-m4/src/sam_smartfs.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/samd5e5/metro-m4/src/sam_smartfs.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
@@ -232,4 +234,4 @@ int sam_smartfs_initialize(void)
   return OK;
 }
 
-#endif /* CONFIG_FS_SMARTFS */
\ No newline at end of file
+#endif /* CONFIG_FS_SMARTFS */
diff --git a/boards/arm/samd5e5/metro-m4/src/sam_usbdev.c b/boards/arm/samd5e5/metro-m4/src/sam_usbdev.c
index e0495cedb4d..59644ea4fbf 100644
--- a/boards/arm/samd5e5/metro-m4/src/sam_usbdev.c
+++ b/boards/arm/samd5e5/metro-m4/src/sam_usbdev.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/samd5e5/metro-m4/src/sam_usbdev.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/samd5e5/metro-m4/src/sam_usbhost.c b/boards/arm/samd5e5/metro-m4/src/sam_usbhost.c
index b7bd9e4ca47..910aebe2c5a 100644
--- a/boards/arm/samd5e5/metro-m4/src/sam_usbhost.c
+++ b/boards/arm/samd5e5/metro-m4/src/sam_usbhost.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/samd5e5/metro-m4/src/sam_usbhost.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/samd5e5/metro-m4/src/sam_usbmsc.c b/boards/arm/samd5e5/metro-m4/src/sam_usbmsc.c
index 4032dea82ac..320e9291573 100644
--- a/boards/arm/samd5e5/metro-m4/src/sam_usbmsc.c
+++ b/boards/arm/samd5e5/metro-m4/src/sam_usbmsc.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/samd5e5/metro-m4/src/sam_usbmsc.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/samd5e5/metro-m4/src/sam_userleds.c b/boards/arm/samd5e5/metro-m4/src/sam_userleds.c
index 62f69f9f92a..20d74ab8aa5 100644
--- a/boards/arm/samd5e5/metro-m4/src/sam_userleds.c
+++ b/boards/arm/samd5e5/metro-m4/src/sam_userleds.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/samd5e5/metro-m4/src/sam_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/samd5e5/same54-xplained-pro/include/board.h b/boards/arm/samd5e5/same54-xplained-pro/include/board.h
index 94571684a84..00c2b69788c 100644
--- a/boards/arm/samd5e5/same54-xplained-pro/include/board.h
+++ b/boards/arm/samd5e5/same54-xplained-pro/include/board.h
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/samd5e5/same54-xplained-pro/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/samd5e5/same54-xplained-pro/scripts/Make.defs b/boards/arm/samd5e5/same54-xplained-pro/scripts/Make.defs
index 3f6d86c5c82..44a3c3003f6 100644
--- a/boards/arm/samd5e5/same54-xplained-pro/scripts/Make.defs
+++ b/boards/arm/samd5e5/same54-xplained-pro/scripts/Make.defs
@@ -1,6 +1,8 @@
 ############################################################################
 # boards/arm/samd5e5/same54-xplained-pro/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/samd5e5/same54-xplained-pro/scripts/flash.ld b/boards/arm/samd5e5/same54-xplained-pro/scripts/flash.ld
index 4571894c058..4bf9cc194f0 100644
--- a/boards/arm/samd5e5/same54-xplained-pro/scripts/flash.ld
+++ b/boards/arm/samd5e5/same54-xplained-pro/scripts/flash.ld
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/samd5e5/same54-xplained-pro/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/samd5e5/same54-xplained-pro/scripts/nvm.c b/boards/arm/samd5e5/same54-xplained-pro/scripts/nvm.c
index c981f31e992..cf5315bd0a7 100644
--- a/boards/arm/samd5e5/same54-xplained-pro/scripts/nvm.c
+++ b/boards/arm/samd5e5/same54-xplained-pro/scripts/nvm.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/samd5e5/same54-xplained-pro/scripts/nvm.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/samd5e5/same54-xplained-pro/scripts/sram.ld b/boards/arm/samd5e5/same54-xplained-pro/scripts/sram.ld
index 20f67a2867f..28706bb0dbc 100644
--- a/boards/arm/samd5e5/same54-xplained-pro/scripts/sram.ld
+++ b/boards/arm/samd5e5/same54-xplained-pro/scripts/sram.ld
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/samd5e5/same54-xplained-pro/scripts/sram.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/samd5e5/same54-xplained-pro/src/Makefile b/boards/arm/samd5e5/same54-xplained-pro/src/Makefile
index e21e1bbd50f..f84d4e763c2 100644
--- a/boards/arm/samd5e5/same54-xplained-pro/src/Makefile
+++ b/boards/arm/samd5e5/same54-xplained-pro/src/Makefile
@@ -1,6 +1,8 @@
 ############################################################################
 # boards/arm/samd5e5/same54-xplained-pro/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/samd5e5/same54-xplained-pro/src/sam_appinit.c b/boards/arm/samd5e5/same54-xplained-pro/src/sam_appinit.c
index ef7509405f0..01300a0c4cc 100644
--- a/boards/arm/samd5e5/same54-xplained-pro/src/sam_appinit.c
+++ b/boards/arm/samd5e5/same54-xplained-pro/src/sam_appinit.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/samd5e5/same54-xplained-pro/src/sam_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/samd5e5/same54-xplained-pro/src/sam_autoleds.c b/boards/arm/samd5e5/same54-xplained-pro/src/sam_autoleds.c
index 65a9e3b813c..70d0dce08d4 100644
--- a/boards/arm/samd5e5/same54-xplained-pro/src/sam_autoleds.c
+++ b/boards/arm/samd5e5/same54-xplained-pro/src/sam_autoleds.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/samd5e5/same54-xplained-pro/src/sam_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/samd5e5/same54-xplained-pro/src/sam_boot.c b/boards/arm/samd5e5/same54-xplained-pro/src/sam_boot.c
index 0d90ea80a59..0b83965c7be 100644
--- a/boards/arm/samd5e5/same54-xplained-pro/src/sam_boot.c
+++ b/boards/arm/samd5e5/same54-xplained-pro/src/sam_boot.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/samd5e5/same54-xplained-pro/src/sam_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/samd5e5/same54-xplained-pro/src/sam_bringup.c b/boards/arm/samd5e5/same54-xplained-pro/src/sam_bringup.c
index e0b4338a43d..9cf4ca09c04 100644
--- a/boards/arm/samd5e5/same54-xplained-pro/src/sam_bringup.c
+++ b/boards/arm/samd5e5/same54-xplained-pro/src/sam_bringup.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/samd5e5/same54-xplained-pro/src/sam_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/samd5e5/same54-xplained-pro/src/sam_phyinit.c b/boards/arm/samd5e5/same54-xplained-pro/src/sam_phyinit.c
index 27345c30b09..1377e697e95 100644
--- a/boards/arm/samd5e5/same54-xplained-pro/src/sam_phyinit.c
+++ b/boards/arm/samd5e5/same54-xplained-pro/src/sam_phyinit.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/samd5e5/same54-xplained-pro/src/sam_phyinit.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/samd5e5/same54-xplained-pro/src/sam_userleds.c b/boards/arm/samd5e5/same54-xplained-pro/src/sam_userleds.c
index fc62d4084da..60c88e307d2 100644
--- a/boards/arm/samd5e5/same54-xplained-pro/src/sam_userleds.c
+++ b/boards/arm/samd5e5/same54-xplained-pro/src/sam_userleds.c
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/samd5e5/same54-xplained-pro/src/sam_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/samd5e5/same54-xplained-pro/src/same54-xplained-pro.h b/boards/arm/samd5e5/same54-xplained-pro/src/same54-xplained-pro.h
index aba88630d9e..b4a52218d36 100644
--- a/boards/arm/samd5e5/same54-xplained-pro/src/same54-xplained-pro.h
+++ b/boards/arm/samd5e5/same54-xplained-pro/src/same54-xplained-pro.h
@@ -1,6 +1,8 @@
 /****************************************************************************
  * boards/arm/samd5e5/same54-xplained-pro/src/same54-xplained-pro.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