diff --git a/arch/arm/boot/dts/zero-sugar-wifi-cal.dts b/arch/arm/boot/dts/zero-sugar-wifi-cal.dts
index a910e0b9b20b..033e9d6690d6 100644
--- a/arch/arm/boot/dts/zero-sugar-wifi-cal.dts
+++ b/arch/arm/boot/dts/zero-sugar-wifi-cal.dts
@@ -1,3 +1,45 @@
+/*
+ * Copyright (C) 2019 reMarkable AS - http://www.remarkable.com/
+ *
+ * This file is dual-licensed: you can use it either under the terms
+ * of the GPL or the X11 license, at your option. Note that this dual
+ * licensing only applies to this file, and not this project as a
+ * whole.
+ *
+ *  a) This file 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; either version 2 of the
+ *     License, or (at your option) any later version.
+ *
+ *     This file 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.
+ *
+ * Or, alternatively,
+ *
+ *  b) Permission is hereby granted, free of charge, to any person
+ *     obtaining a copy of this software and associated documentation
+ *     files (the "Software"), to deal in the Software without
+ *     restriction, including without limitation the rights to use,
+ *     copy, modify, merge, publish, distribute, sublicense, and/or
+ *     sell copies of the Software, and to permit persons to whom the
+ *     Software is furnished to do so, subject to the following
+ *     conditions:
+ *
+ *     The above copyright notice and this permission notice shall be
+ *     included in all copies or substantial portions of the Software.
+ *
+ *     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ *     EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ *     OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ *     NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ *     HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ *     WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ *     FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ *     OTHER DEALINGS IN THE SOFTWARE.
+ */
+
 #include "zero-sugar.dts"
 
 &usdhc2 {
diff --git a/arch/arm/boot/dts/zero-sugar.dts b/arch/arm/boot/dts/zero-sugar.dts
index 7379f6d00cfd..8aa62bc2c468 100644
--- a/arch/arm/boot/dts/zero-sugar.dts
+++ b/arch/arm/boot/dts/zero-sugar.dts
@@ -1,5 +1,6 @@
 /*
  * Copyright (C) 2015 Freescale Semiconductor, Inc.
+ * Copyright (C) 2019 reMarkable AS - http://www.remarkable.com/
  *
  * This file is dual-licensed: you can use it either under the terms
  * of the GPL or the X11 license, at your option. Note that this dual