diff --git a/arch/powerpc/boot/dts/xcalibur1501.dts b/arch/powerpc/boot/dts/xcalibur1501.dts
index 1f2952dce77d5b76f44e1b098e28e0f5ea7cdbdb..46c25bda9515d956ba1e99b270cc157e0cbaa77d 100644
--- a/arch/powerpc/boot/dts/xcalibur1501.dts
+++ b/arch/powerpc/boot/dts/xcalibur1501.dts
@@ -1,12 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (C) 2008 Extreme Engineering Solutions, Inc.
  * Based on MPC8572DS device tree from Freescale Semiconductor, Inc.
  *
  * XCalibur1501 6U CompactPCI single-board computer based on MPC8572E
- *
- * This is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
  */
 
 /dts-v1/;
diff --git a/arch/powerpc/boot/dts/xpedite5200.dts b/arch/powerpc/boot/dts/xpedite5200.dts
index 5b10e56a1d8e006c73fcbc1ba54b02da5dfb15ee..840ea84bbb595431f259275cf61dbfb596ff1a1c 100644
--- a/arch/powerpc/boot/dts/xpedite5200.dts
+++ b/arch/powerpc/boot/dts/xpedite5200.dts
@@ -1,12 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (C) 2009 Extreme Engineering Solutions, Inc.
  * Based on TQM8548 device tree
  *
  * XPedite5200 PrPMC/XMC module based on MPC8548E
- *
- * This is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
  */
 
 /dts-v1/;
diff --git a/arch/powerpc/boot/dts/xpedite5200_xmon.dts b/arch/powerpc/boot/dts/xpedite5200_xmon.dts
index d5e14421c39adf41ccf427759cee1cd47f740801..449fc1b5dc23098d8f0e109fbeb0fa1a7ab592a2 100644
--- a/arch/powerpc/boot/dts/xpedite5200_xmon.dts
+++ b/arch/powerpc/boot/dts/xpedite5200_xmon.dts
@@ -1,13 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (C) 2009 Extreme Engineering Solutions, Inc.
  * Based on TQM8548 device tree
  *
  * XPedite5200 PrPMC/XMC module based on MPC8548E.  This dts is for the
  * xMon boot loader memory map which differs from U-Boot's.
- *
- * This is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
  */
 
 /dts-v1/;
diff --git a/arch/powerpc/boot/dts/xpedite5301.dts b/arch/powerpc/boot/dts/xpedite5301.dts
index 7bcc94ffe53d698a3b012e5c9e81959399648e12..12184e1796381aab9d2063548370f2f132609821 100644
--- a/arch/powerpc/boot/dts/xpedite5301.dts
+++ b/arch/powerpc/boot/dts/xpedite5301.dts
@@ -1,12 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (C) 2008 Extreme Engineering Solutions, Inc.
  * Based on MPC8572DS device tree from Freescale Semiconductor, Inc.
  *
  * XPedite5301 PMC/XMC module based on MPC8572E
- *
- * This is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
  */
 
 /dts-v1/;
diff --git a/arch/powerpc/boot/dts/xpedite5330.dts b/arch/powerpc/boot/dts/xpedite5330.dts
index 86df8bc6ebbde405ea2afe9ae923e0440ec33c94..e8fc90c52ad6bedaf7acba759fc6ad55661d01d2 100644
--- a/arch/powerpc/boot/dts/xpedite5330.dts
+++ b/arch/powerpc/boot/dts/xpedite5330.dts
@@ -1,12 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (C) 2008 Extreme Engineering Solutions, Inc.
  * Based on MPC8572DS device tree from Freescale Semiconductor, Inc.
  *
  * XPedite5330 3U CompactPCI module based on MPC8572E
- *
- * This is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
  */
 
 /dts-v1/;
diff --git a/arch/powerpc/boot/dts/xpedite5370.dts b/arch/powerpc/boot/dts/xpedite5370.dts
index b8ade094f93264355efb6b6edd47bfb8877dfedc..2b5aa2f3a70987d9390178ae2d1b7291acd727c3 100644
--- a/arch/powerpc/boot/dts/xpedite5370.dts
+++ b/arch/powerpc/boot/dts/xpedite5370.dts
@@ -1,12 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (C) 2008 Extreme Engineering Solutions, Inc.
  * Based on MPC8572DS device tree from Freescale Semiconductor, Inc.
  *
  * XPedite5370 3U VPX single-board computer based on MPC8572E
- *
- * This is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
  */
 
 /dts-v1/;
diff --git a/arch/powerpc/platforms/85xx/common.c b/arch/powerpc/platforms/85xx/common.c
index 954e5e8b14ef05e595332094b1a94cd2a818779b..fe0606439b5aecbebd3811e21b2129e69efd8a44 100644
--- a/arch/powerpc/platforms/85xx/common.c
+++ b/arch/powerpc/platforms/85xx/common.c
@@ -1,9 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Routines common to most mpc85xx-based boards.
- *
- * This is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
  */
 
 #include <linux/of_irq.h>
diff --git a/arch/powerpc/platforms/85xx/xes_mpc85xx.c b/arch/powerpc/platforms/85xx/xes_mpc85xx.c
index 77e618dce4a876ad58f101f848b6fca2b019736c..d54e1ae56997736b9e0e5e5658d66482608e06ce 100644
--- a/arch/powerpc/platforms/85xx/xes_mpc85xx.c
+++ b/arch/powerpc/platforms/85xx/xes_mpc85xx.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (C) 2009 Extreme Engineering Solutions, Inc.
  *
@@ -6,10 +7,6 @@
  * Based on mpc85xx_ds code from Freescale Semiconductor, Inc.
  *
  * Author: Nate Case <ncase@xes-inc.com>
- *
- * This is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
  */
 
 #include <linux/stddef.h>
diff --git a/arch/powerpc/platforms/86xx/common.c b/arch/powerpc/platforms/86xx/common.c
index 0f7b7fcf1ba266b30f7521102100a202b3de6415..0069d38263e70c2567cbcd463dfdb0ce96ba1160 100644
--- a/arch/powerpc/platforms/86xx/common.c
+++ b/arch/powerpc/platforms/86xx/common.c
@@ -1,9 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Routines common to most mpc86xx-based boards.
- *
- * This is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
  */
 
 #include <linux/of_platform.h>