diff --git a/target/linux/at91/files/arch/arm/boot/dts/at91-q5xr5.dts b/target/linux/at91/files/arch/arm/boot/dts/at91-q5xr5.dts
index e6451202aa..7de05ee749 100644
--- a/target/linux/at91/files/arch/arm/boot/dts/at91-q5xr5.dts
+++ b/target/linux/at91/files/arch/arm/boot/dts/at91-q5xr5.dts
@@ -1,10 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * q5xr5.dts - Device Tree file for Exegin Q5xR5 board
  *
  * Copyright (C) 2014 Owen Kirby <osk@exegin.com>
- *
- * Licensed under GPLv2.
  */
+
 /dts-v1/;
 #include "at91sam9g20.dtsi"
 
diff --git a/target/linux/at91/files/arch/arm/boot/dts/lmu5000.dts b/target/linux/at91/files/arch/arm/boot/dts/lmu5000.dts
index 4651fdf241..d9d7da619a 100644
--- a/target/linux/at91/files/arch/arm/boot/dts/lmu5000.dts
+++ b/target/linux/at91/files/arch/arm/boot/dts/lmu5000.dts
@@ -1,10 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * lmu5000.dst - Device Tree file for CalAmp LMU5000 board
  *
  * Copyright (C) 2013 Adam Porter <porter.adam@gmail.com>
- *
- * Licensed under GPLv2.
  */
+
 /dts-v1/;
 #include "at91sam9g20.dtsi"
 
diff --git a/target/linux/at91/files/arch/arm/boot/dts/wb45n.dts b/target/linux/at91/files/arch/arm/boot/dts/wb45n.dts
index 1f51893ce3..fd9d260f2a 100644
--- a/target/linux/at91/files/arch/arm/boot/dts/wb45n.dts
+++ b/target/linux/at91/files/arch/arm/boot/dts/wb45n.dts
@@ -1,10 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * wb45n.dts - Device Tree file for WB45NBT board
  *
  *  Copyright (C) 2015 Laird
- *
- * Licensed under GPLv2 or later.
  */
+
 /dts-v1/;
 #include "at91sam9g25.dtsi"
 
diff --git a/target/linux/at91/files/arch/arm/boot/dts/wb50n.dts b/target/linux/at91/files/arch/arm/boot/dts/wb50n.dts
index febd76b874..15b10a8b06 100644
--- a/target/linux/at91/files/arch/arm/boot/dts/wb50n.dts
+++ b/target/linux/at91/files/arch/arm/boot/dts/wb50n.dts
@@ -1,10 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * wb50n.dts - Device Tree file for wb50n board
  *
  *  Copyright (C) 2015 Laird
- *
- * Licensed under GPLv2 or later.
  */
+
 /dts-v1/;
 #include "wb50n.dtsi"
 
diff --git a/target/linux/at91/files/arch/arm/boot/dts/wb50n.dtsi b/target/linux/at91/files/arch/arm/boot/dts/wb50n.dtsi
index 8d30424442..936cce39ed 100644
--- a/target/linux/at91/files/arch/arm/boot/dts/wb50n.dtsi
+++ b/target/linux/at91/files/arch/arm/boot/dts/wb50n.dtsi
@@ -1,10 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * wb50n.dts - Device Tree file for wb50n board
  *
  *  Copyright (C) 2015 Laird
- *
- * Licensed under GPLv2 or later.
  */
+
 #include "sama5d31.dtsi"
 
 / {