diff --git a/arch/arm/mach-kirkwood/Makefile b/arch/arm/mach-kirkwood/Makefile
index 5abcf70..3b2eef8 100644
--- a/arch/arm/mach-kirkwood/Makefile
+++ b/arch/arm/mach-kirkwood/Makefile
@@ -1,10 +1,8 @@
+# SPDX-License-Identifier: GPL-2.0+
 #
 # (C) Copyright 2009
 # Marvell Semiconductor <www.marvell.com>
 # Written-by: Prafulla Wadaskar <prafulla@marvell.com>
-#
-# SPDX-License-Identifier:	GPL-2.0+
-#
 
 obj-y	= cpu.o
 obj-y	+= cache.o
diff --git a/arch/arm/mach-kirkwood/cache.c b/arch/arm/mach-kirkwood/cache.c
index e18a309..6b12ea5 100644
--- a/arch/arm/mach-kirkwood/cache.c
+++ b/arch/arm/mach-kirkwood/cache.c
@@ -1,8 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright (c) 2012 Michael Walle
  * Michael Walle <michael@walle.cc>
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 #include <common.h>
 #include <asm/arch/cpu.h>
diff --git a/arch/arm/mach-kirkwood/cpu.c b/arch/arm/mach-kirkwood/cpu.c
index db2ff03..d54de53 100644
--- a/arch/arm/mach-kirkwood/cpu.c
+++ b/arch/arm/mach-kirkwood/cpu.c
@@ -1,9 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * (C) Copyright 2009
  * Marvell Semiconductor <www.marvell.com>
  * Written-by: Prafulla Wadaskar <prafulla@marvell.com>
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <common.h>
diff --git a/arch/arm/mach-kirkwood/include/mach/config.h b/arch/arm/mach-kirkwood/include/mach/config.h
index 9d6ad53..948d1e7 100644
--- a/arch/arm/mach-kirkwood/include/mach/config.h
+++ b/arch/arm/mach-kirkwood/include/mach/config.h
@@ -1,9 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * (C) Copyright 2011
  * Marvell Semiconductor <www.marvell.com>
  * Written-by: Lei Wen <leiwen@marvell.com>
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 /*
diff --git a/arch/arm/mach-kirkwood/include/mach/cpu.h b/arch/arm/mach-kirkwood/include/mach/cpu.h
index ab704d9..91d2151 100644
--- a/arch/arm/mach-kirkwood/include/mach/cpu.h
+++ b/arch/arm/mach-kirkwood/include/mach/cpu.h
@@ -1,9 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * (C) Copyright 2009
  * Marvell Semiconductor <www.marvell.com>
  * Written-by: Prafulla Wadaskar <prafulla@marvell.com>
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #ifndef _KWCPU_H
diff --git a/arch/arm/mach-kirkwood/include/mach/gpio.h b/arch/arm/mach-kirkwood/include/mach/gpio.h
index ac2397d..cae7d55 100644
--- a/arch/arm/mach-kirkwood/include/mach/gpio.h
+++ b/arch/arm/mach-kirkwood/include/mach/gpio.h
@@ -1,7 +1,6 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * arch/asm-arm/mach-kirkwood/include/mach/gpio.h
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 /*
diff --git a/arch/arm/mach-kirkwood/include/mach/kw88f6192.h b/arch/arm/mach-kirkwood/include/mach/kw88f6192.h
index de220d5..c44eacf 100644
--- a/arch/arm/mach-kirkwood/include/mach/kw88f6192.h
+++ b/arch/arm/mach-kirkwood/include/mach/kw88f6192.h
@@ -1,11 +1,10 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * (C) Copyright 2009
  * Marvell Semiconductor <www.marvell.com>
  * Written-by: Prafulla Wadaskar <prafulla@marvell.com>
  *
  * Header file for Feroceon CPU core 88FR131 Based KW88F6192 SOC.
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #ifndef _CONFIG_KW88F6192_H
diff --git a/arch/arm/mach-kirkwood/include/mach/kw88f6281.h b/arch/arm/mach-kirkwood/include/mach/kw88f6281.h
index ca88a30..33e7414 100644
--- a/arch/arm/mach-kirkwood/include/mach/kw88f6281.h
+++ b/arch/arm/mach-kirkwood/include/mach/kw88f6281.h
@@ -1,11 +1,10 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * (C) Copyright 2009
  * Marvell Semiconductor <www.marvell.com>
  * Written-by: Prafulla Wadaskar <prafulla@marvell.com>
  *
  * Header file for Feroceon CPU core 88FR131 Based KW88F6281 SOC.
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #ifndef _ASM_ARCH_KW88F6281_H
diff --git a/arch/arm/mach-kirkwood/include/mach/mpp.h b/arch/arm/mach-kirkwood/include/mach/mpp.h
index 7c8f6eb..4d1f58c 100644
--- a/arch/arm/mach-kirkwood/include/mach/mpp.h
+++ b/arch/arm/mach-kirkwood/include/mach/mpp.h
@@ -1,9 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * linux/arch/arm/mach-kirkwood/mpp.h -- Multi Purpose Pins
  *
  * Copyright 2009: Marvell Technology Group Ltd.
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #ifndef __KIRKWOOD_MPP_H
diff --git a/arch/arm/mach-kirkwood/include/mach/soc.h b/arch/arm/mach-kirkwood/include/mach/soc.h
index 58ed71b..227707a 100644
--- a/arch/arm/mach-kirkwood/include/mach/soc.h
+++ b/arch/arm/mach-kirkwood/include/mach/soc.h
@@ -1,11 +1,10 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * (C) Copyright 2009
  * Marvell Semiconductor <www.marvell.com>
  * Written-by: Prafulla Wadaskar <prafulla@marvell.com>
  *
  * Header file for the Marvell's Feroceon CPU core.
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #ifndef _ASM_ARCH_KIRKWOOD_H