diff --git a/drivers/clk/renesas/Kconfig b/drivers/clk/renesas/Kconfig
index 9022bbe..ab2110f 100644
--- a/drivers/clk/renesas/Kconfig
+++ b/drivers/clk/renesas/Kconfig
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0
+
 config CLK_RENESAS
 	bool "Renesas SoC clock support" if COMPILE_TEST && !ARCH_RENESAS
 	default y if ARCH_RENESAS
diff --git a/drivers/clk/renesas/clk-emev2.c b/drivers/clk/renesas/clk-emev2.c
index a918254..7f3b5f9 100644
--- a/drivers/clk/renesas/clk-emev2.c
+++ b/drivers/clk/renesas/clk-emev2.c
@@ -1,21 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * EMMA Mobile EV2 common clock framework support
  *
  * Copyright (C) 2013 Takashi Yoshii <takashi.yoshii.ze@renesas.com>
  * Copyright (C) 2012 Magnus Damm
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  */
 #include <linux/clk-provider.h>
 #include <linux/clkdev.h>
diff --git a/drivers/clk/renesas/clk-mstp.c b/drivers/clk/renesas/clk-mstp.c
index e82adcb..7df14bb 100644
--- a/drivers/clk/renesas/clk-mstp.c
+++ b/drivers/clk/renesas/clk-mstp.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * R-Car MSTP clocks
  *
@@ -5,10 +6,6 @@
  * Copyright (C) 2015 Glider bvba
  *
  * Contact: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
  */
 
 #include <linux/clk.h>
diff --git a/drivers/clk/renesas/clk-r8a73a4.c b/drivers/clk/renesas/clk-r8a73a4.c
index 7b903ce..e1a9e89 100644
--- a/drivers/clk/renesas/clk-r8a73a4.c
+++ b/drivers/clk/renesas/clk-r8a73a4.c
@@ -1,11 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * r8a73a4 Core CPG Clocks
  *
  * Copyright (C) 2014  Ulrich Hecht
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
  */
 
 #include <linux/clk-provider.h>
diff --git a/drivers/clk/renesas/clk-r8a7740.c b/drivers/clk/renesas/clk-r8a7740.c
index a7a30d2..d681712 100644
--- a/drivers/clk/renesas/clk-r8a7740.c
+++ b/drivers/clk/renesas/clk-r8a7740.c
@@ -1,11 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * r8a7740 Core CPG Clocks
  *
  * Copyright (C) 2014  Ulrich Hecht
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
  */
 
 #include <linux/clk-provider.h>
diff --git a/drivers/clk/renesas/clk-r8a7778.c b/drivers/clk/renesas/clk-r8a7778.c
index 886a838..f986ba3 100644
--- a/drivers/clk/renesas/clk-r8a7778.c
+++ b/drivers/clk/renesas/clk-r8a7778.c
@@ -1,11 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * r8a7778 Core CPG Clocks
  *
  * Copyright (C) 2014  Ulrich Hecht
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
  */
 
 #include <linux/clk-provider.h>
diff --git a/drivers/clk/renesas/clk-r8a7779.c b/drivers/clk/renesas/clk-r8a7779.c
index 5adcca4..437d92c 100644
--- a/drivers/clk/renesas/clk-r8a7779.c
+++ b/drivers/clk/renesas/clk-r8a7779.c
@@ -1,13 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * r8a7779 Core CPG Clocks
  *
  * Copyright (C) 2013, 2014 Horms Solutions Ltd.
  *
  * Contact: Simon Horman <horms@verge.net.au>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
  */
 
 #include <linux/clk-provider.h>
diff --git a/drivers/clk/renesas/clk-rcar-gen2.c b/drivers/clk/renesas/clk-rcar-gen2.c
index bccd62f..738b723 100644
--- a/drivers/clk/renesas/clk-rcar-gen2.c
+++ b/drivers/clk/renesas/clk-rcar-gen2.c
@@ -1,13 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * rcar_gen2 Core CPG Clocks
  *
  * Copyright (C) 2013  Ideas On Board SPRL
  *
  * Contact: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
  */
 
 #include <linux/clk-provider.h>
diff --git a/drivers/clk/renesas/clk-rz.c b/drivers/clk/renesas/clk-rz.c
index ac2f86d..7fe8729 100644
--- a/drivers/clk/renesas/clk-rz.c
+++ b/drivers/clk/renesas/clk-rz.c
@@ -1,12 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * RZ/A1 Core CPG Clocks
  *
  * Copyright (C) 2013 Ideas On Board SPRL
  * Copyright (C) 2014 Wolfram Sang, Sang Engineering <wsa@sang-engineering.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
  */
 
 #include <linux/clk-provider.h>
diff --git a/drivers/clk/renesas/clk-sh73a0.c b/drivers/clk/renesas/clk-sh73a0.c
index bab3361..5762592 100644
--- a/drivers/clk/renesas/clk-sh73a0.c
+++ b/drivers/clk/renesas/clk-sh73a0.c
@@ -1,11 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * sh73a0 Core CPG Clocks
  *
  * Copyright (C) 2014  Ulrich Hecht
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
  */
 
 #include <linux/clk-provider.h>
diff --git a/drivers/clk/renesas/r8a7743-cpg-mssr.c b/drivers/clk/renesas/r8a7743-cpg-mssr.c
index 011c170..f880b9c 100644
--- a/drivers/clk/renesas/r8a7743-cpg-mssr.c
+++ b/drivers/clk/renesas/r8a7743-cpg-mssr.c
@@ -1,11 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * r8a7743 Clock Pulse Generator / Module Standby and Software Reset
  *
  * Copyright (C) 2016 Cogent Embedded Inc.
- *
- * This program 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; of the License.
  */
 
 #include <linux/device.h>
diff --git a/drivers/clk/renesas/r8a7745-cpg-mssr.c b/drivers/clk/renesas/r8a7745-cpg-mssr.c
index 4b0a924..493874e 100644
--- a/drivers/clk/renesas/r8a7745-cpg-mssr.c
+++ b/drivers/clk/renesas/r8a7745-cpg-mssr.c
@@ -1,11 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * r8a7745 Clock Pulse Generator / Module Standby and Software Reset
  *
  * Copyright (C) 2016 Cogent Embedded Inc.
- *
- * This program 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; of the License.
  */
 
 #include <linux/device.h>
diff --git a/drivers/clk/renesas/r8a7790-cpg-mssr.c b/drivers/clk/renesas/r8a7790-cpg-mssr.c
index f936cb7..c57cb93 100644
--- a/drivers/clk/renesas/r8a7790-cpg-mssr.c
+++ b/drivers/clk/renesas/r8a7790-cpg-mssr.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * r8a7790 Clock Pulse Generator / Module Standby and Software Reset
  *
@@ -6,10 +7,6 @@
  * Based on clk-rcar-gen2.c
  *
  * Copyright (C) 2013 Ideas On Board SPRL
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
  */
 
 #include <linux/device.h>
diff --git a/drivers/clk/renesas/r8a7791-cpg-mssr.c b/drivers/clk/renesas/r8a7791-cpg-mssr.c
index 1b91f03..65702de 100644
--- a/drivers/clk/renesas/r8a7791-cpg-mssr.c
+++ b/drivers/clk/renesas/r8a7791-cpg-mssr.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * r8a7791 Clock Pulse Generator / Module Standby and Software Reset
  *
@@ -6,10 +7,6 @@
  * Based on clk-rcar-gen2.c
  *
  * Copyright (C) 2013 Ideas On Board SPRL
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
  */
 
 #include <linux/device.h>
diff --git a/drivers/clk/renesas/r8a7792-cpg-mssr.c b/drivers/clk/renesas/r8a7792-cpg-mssr.c
index 493e078..cf8b84a 100644
--- a/drivers/clk/renesas/r8a7792-cpg-mssr.c
+++ b/drivers/clk/renesas/r8a7792-cpg-mssr.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * r8a7792 Clock Pulse Generator / Module Standby and Software Reset
  *
@@ -6,10 +7,6 @@
  * Based on clk-rcar-gen2.c
  *
  * Copyright (C) 2013 Ideas On Board SPRL
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
  */
 
 #include <linux/device.h>
diff --git a/drivers/clk/renesas/r8a7794-cpg-mssr.c b/drivers/clk/renesas/r8a7794-cpg-mssr.c
index 088f4b7..c194869 100644
--- a/drivers/clk/renesas/r8a7794-cpg-mssr.c
+++ b/drivers/clk/renesas/r8a7794-cpg-mssr.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * r8a7794 Clock Pulse Generator / Module Standby and Software Reset
  *
@@ -6,10 +7,6 @@
  * Based on clk-rcar-gen2.c
  *
  * Copyright (C) 2013 Ideas On Board SPRL
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
  */
 
 #include <linux/device.h>
diff --git a/drivers/clk/renesas/r8a77970-cpg-mssr.c b/drivers/clk/renesas/r8a77970-cpg-mssr.c
index f558429..3850987 100644
--- a/drivers/clk/renesas/r8a77970-cpg-mssr.c
+++ b/drivers/clk/renesas/r8a77970-cpg-mssr.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * r8a77970 Clock Pulse Generator / Module Standby and Software Reset
  *
@@ -6,10 +7,6 @@
  * Based on r8a7795-cpg-mssr.c
  *
  * Copyright (C) 2015 Glider bvba
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
  */
 
 #include <linux/device.h>
diff --git a/drivers/clk/renesas/rcar-gen2-cpg.c b/drivers/clk/renesas/rcar-gen2-cpg.c
index daf88bc..f596a2d 100644
--- a/drivers/clk/renesas/rcar-gen2-cpg.c
+++ b/drivers/clk/renesas/rcar-gen2-cpg.c
@@ -1,11 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * R-Car Gen2 Clock Pulse Generator
  *
  * Copyright (C) 2016 Cogent Embedded Inc.
- *
- * This program 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/bug.h>
diff --git a/drivers/clk/renesas/rcar-gen2-cpg.h b/drivers/clk/renesas/rcar-gen2-cpg.h
index 020a3ba..bff9551 100644
--- a/drivers/clk/renesas/rcar-gen2-cpg.h
+++ b/drivers/clk/renesas/rcar-gen2-cpg.h
@@ -1,11 +1,8 @@
-/*
+/* SPDX-License-Identifier: GPL-2.0
+ *
  * R-Car Gen2 Clock Pulse Generator
  *
  * Copyright (C) 2016 Cogent Embedded Inc.
- *
- * This program 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; version 2 of the License.
  */
 
 #ifndef __CLK_RENESAS_RCAR_GEN2_CPG_H__
diff --git a/drivers/clk/renesas/rcar-gen3-cpg.h b/drivers/clk/renesas/rcar-gen3-cpg.h
index ea4f8fc..6ebc4b4 100644
--- a/drivers/clk/renesas/rcar-gen3-cpg.h
+++ b/drivers/clk/renesas/rcar-gen3-cpg.h
@@ -1,11 +1,8 @@
-/*
+/* SPDX-License-Identifier: GPL-2.0
+ *
  * R-Car Gen3 Clock Pulse Generator
  *
  * Copyright (C) 2015-2016 Glider bvba
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
  */
 
 #ifndef __CLK_RENESAS_RCAR_GEN3_CPG_H__
diff --git a/drivers/clk/renesas/renesas-cpg-mssr.h b/drivers/clk/renesas/renesas-cpg-mssr.h
index 59b1b30..d52d1f8 100644
--- a/drivers/clk/renesas/renesas-cpg-mssr.h
+++ b/drivers/clk/renesas/renesas-cpg-mssr.h
@@ -1,5 +1,5 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
+/* SPDX-License-Identifier: GPL-2.0
+ *
  * Renesas Clock Pulse Generator / Module Standby and Software Reset
  *
  * Copyright (C) 2015 Glider bvba