diff --git a/overlay/jetson-adafruit-sph0645lm4h.dtsi b/overlay/jetson-adafruit-sph0645lm4h.dtsi
index 4550868..3444ec9 100644
--- a/overlay/jetson-adafruit-sph0645lm4h.dtsi
+++ b/overlay/jetson-adafruit-sph0645lm4h.dtsi
@@ -1,20 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
- * Copyright (c) 2019-2021, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2019-2023, NVIDIA CORPORATION.  All rights reserved.
  *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope 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, see <http://www.gnu.org/licenses/>.
- */
-
-/*
  * Jetson Device-tree overlay for Adafruit I2S MEMS Microphone Breakout
  * (SPH0645LM4H).
  */
diff --git a/overlay/jetson-adafruit-uda1334a.dtsi b/overlay/jetson-adafruit-uda1334a.dtsi
index f955b4c..65ab1cf 100644
--- a/overlay/jetson-adafruit-uda1334a.dtsi
+++ b/overlay/jetson-adafruit-uda1334a.dtsi
@@ -1,10 +1,9 @@
 // SPDX-License-Identifier: GPL-2.0-only
 /*
+ * Copyright (c) 2021-2023 NVIDIA CORPORATION. All rights reserved.
+ *
  * Jetson Device-tree overlay for Adafruit I2S Stereo Decoder Breakout
  * (UDA1334A).
- *
- * Copyright (c) 2021 NVIDIA CORPORATION. All rights reserved.
- *
  */
 
 #include <dt-bindings/pinctrl/pinctrl-tegra.h>
diff --git a/overlay/jetson-fe-pi-audio.dtsi b/overlay/jetson-fe-pi-audio.dtsi
index 19dd187..ec214da 100644
--- a/overlay/jetson-fe-pi-audio.dtsi
+++ b/overlay/jetson-fe-pi-audio.dtsi
@@ -1,9 +1,8 @@
 // SPDX-License-Identifier: GPL-2.0-only
 /*
+ * Copyright (c) 2019-2023, NVIDIA CORPORATION.  All rights reserved.
+ *
  * Jetson Device-tree overlay for FE-PI Audio V1 and Z V2.
- *
- * Copyright (c) 2019-2022, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
- *
  */
 
 #include <dt-bindings/pinctrl/pinctrl-tegra.h>
diff --git a/overlay/jetson-mcp251x.dtsi b/overlay/jetson-mcp251x.dtsi
index 1abb8eb..8e59810 100644
--- a/overlay/jetson-mcp251x.dtsi
+++ b/overlay/jetson-mcp251x.dtsi
@@ -1,20 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
- * Copyright (c) 2020-2021, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2020-2023, NVIDIA CORPORATION.  All rights reserved.
  *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope 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, see <http://www.gnu.org/licenses/>.
- */
-
-/*
  * Jetson Device-tree overlay for MCP251x CAN Controller.
  */
 
diff --git a/overlay/jetson-respeaker-4-mic-array.dtsi b/overlay/jetson-respeaker-4-mic-array.dtsi
index 44ec15b..0702a3a 100644
--- a/overlay/jetson-respeaker-4-mic-array.dtsi
+++ b/overlay/jetson-respeaker-4-mic-array.dtsi
@@ -1,9 +1,8 @@
 // SPDX-License-Identifier: GPL-2.0-only
 /*
+ * Copyright (c) 2020-2023, NVIDIA CORPORATION.  All rights reserved.
+ *
  * Jetson Device-tree overlay for ReSpeaker 4 Mic Array.
- *
- * Copyright (c) 2020-2022, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
- *
  */
 
 #include <dt-bindings/pinctrl/pinctrl-tegra.h>
diff --git a/overlay/jetson-respeaker-4-mic-lin-array.dtsi b/overlay/jetson-respeaker-4-mic-lin-array.dtsi
index a51b1cd..003ec39 100644
--- a/overlay/jetson-respeaker-4-mic-lin-array.dtsi
+++ b/overlay/jetson-respeaker-4-mic-lin-array.dtsi
@@ -1,8 +1,8 @@
 // SPDX-License-Identifier: GPL-2.0-only
 /*
- * Jetson Device-tree overlay for ReSpeaker 4 Mic Linear Array.
+ * Copyright (c) 2021-2023, NVIDIA CORPORATION.  All rights reserved.
  *
- * Copyright (c) 2021-2022, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+ * Jetson Device-tree overlay for ReSpeaker 4 Mic Linear Array.
  *
  */