From db41f2efddc1b08e5da4149161ef3512e16e4808 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jan=20Brudn=C3=BD?= <jan.brudny@espressif.com>
Date: Thu, 5 Aug 2021 16:30:10 +0200
Subject: [PATCH] esp_hw_support: update copyright notice

---
 .../esp_hw_support/include/esp_async_memcpy.h  | 18 +++++-------------
 .../esp_hw_support/include/esp_chip_info.h     | 18 +++++-------------
 components/esp_hw_support/include/esp_cpu.h    | 18 +++++-------------
 components/esp_hw_support/include/esp_crc.h    | 18 +++++-------------
 components/esp_hw_support/include/esp_fault.h  | 18 +++++-------------
 .../esp_hw_support/include/esp_interface.h     | 18 +++++-------------
 components/esp_hw_support/include/esp_intr.h   | 18 +++++-------------
 .../esp_hw_support/include/esp_intr_alloc.h    | 18 +++++-------------
 components/esp_hw_support/include/esp_mac.h    | 18 +++++-------------
 .../include/esp_private/esp_clk.h              | 18 +++++-------------
 components/esp_hw_support/include/esp_random.h | 18 +++++-------------
 components/esp_hw_support/include/esp_sleep.h  | 18 +++++-------------
 .../esp_hw_support/include/soc/clk_ctrl_os.h   | 18 +++++-------------
 .../esp_hw_support/include/soc/compare_set.h   | 18 +++++-------------
 components/esp_hw_support/include/soc/cpu.h    | 18 +++++-------------
 .../esp_hw_support/include/soc/esp32/clk.h     | 18 +++++-------------
 .../esp_hw_support/include/soc/esp32c3/clk.h   | 18 +++++-------------
 .../include/soc/esp32c3/dport_access.h         | 18 +++++-------------
 .../include/soc/esp32c3/esp_crypto_lock.h      | 18 +++++-------------
 .../include/soc/esp32c3/esp_ds.h               | 18 +++++-------------
 .../include/soc/esp32c3/esp_hmac.h             | 18 +++++-------------
 .../include/soc/esp32c3/memprot.h              | 18 +++++-------------
 .../esp_hw_support/include/soc/esp32c3/rtc.h   | 18 +++++-------------
 .../esp_hw_support/include/soc/esp32h2/clk.h   | 18 +++++-------------
 .../include/soc/esp32h2/dport_access.h         | 18 +++++-------------
 .../include/soc/esp32h2/esp_crypto_lock.h      | 18 +++++-------------
 .../include/soc/esp32h2/esp_ds.h               | 18 +++++-------------
 .../include/soc/esp32h2/esp_hmac.h             | 18 +++++-------------
 .../include/soc/esp32h2/memprot.h              | 18 +++++-------------
 .../esp_hw_support/include/soc/esp32h2/rtc.h   | 18 +++++-------------
 .../esp_hw_support/include/soc/esp32s2/clk.h   | 18 +++++-------------
 .../include/soc/esp32s2/dport_access.h         | 18 +++++-------------
 .../include/soc/esp32s2/esp_crypto_lock.h      | 18 +++++-------------
 .../include/soc/esp32s2/esp_ds.h               | 18 +++++-------------
 .../include/soc/esp32s2/esp_hmac.h             | 18 +++++-------------
 .../include/soc/esp32s2/memprot.h              | 18 +++++-------------
 .../esp_hw_support/include/soc/esp32s2/rtc.h   | 18 +++++-------------
 .../include/soc/esp32s2/spiram.h               | 18 +++++-------------
 .../esp_hw_support/include/soc/esp32s3/clk.h   | 18 +++++-------------
 .../include/soc/esp32s3/dport_access.h         | 18 +++++-------------
 .../include/soc/esp32s3/esp_crypto_lock.h      | 18 +++++-------------
 .../include/soc/esp32s3/memprot.h              | 18 +++++-------------
 .../esp_hw_support/include/soc/esp32s3/rtc.h   | 18 +++++-------------
 .../include/soc/esp32s3/spiram.h               | 18 +++++-------------
 .../esp_hw_support/include/soc/rtc_wdt.h       | 18 +++++-------------
 .../esp_hw_support/include/soc/spinlock.h      | 18 +++++-------------
 components/esp_hw_support/include/soc_log.h    | 18 +++++-------------
 47 files changed, 235 insertions(+), 611 deletions(-)

diff --git a/components/esp_hw_support/include/esp_async_memcpy.h b/components/esp_hw_support/include/esp_async_memcpy.h
index e95f9638e7..c45c61b2d1 100644
--- a/components/esp_hw_support/include/esp_async_memcpy.h
+++ b/components/esp_hw_support/include/esp_async_memcpy.h
@@ -1,16 +1,8 @@
-// Copyright 2020 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2020-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 #pragma once
 
diff --git a/components/esp_hw_support/include/esp_chip_info.h b/components/esp_hw_support/include/esp_chip_info.h
index d04dcaf424..afaa12638a 100644
--- a/components/esp_hw_support/include/esp_chip_info.h
+++ b/components/esp_hw_support/include/esp_chip_info.h
@@ -1,16 +1,8 @@
-// Copyright 2021 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 #pragma once
 
diff --git a/components/esp_hw_support/include/esp_cpu.h b/components/esp_hw_support/include/esp_cpu.h
index e1536e979b..2a810aba44 100644
--- a/components/esp_hw_support/include/esp_cpu.h
+++ b/components/esp_hw_support/include/esp_cpu.h
@@ -1,16 +1,8 @@
-// Copyright 2010-2016 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2010-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 #ifndef _ESP_CPU_H
 #define _ESP_CPU_H
diff --git a/components/esp_hw_support/include/esp_crc.h b/components/esp_hw_support/include/esp_crc.h
index 6294a7b621..f12dcf767d 100644
--- a/components/esp_hw_support/include/esp_crc.h
+++ b/components/esp_hw_support/include/esp_crc.h
@@ -1,16 +1,8 @@
-// Copyright 2015-2019 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 #pragma once
 
 #ifdef __cplusplus
diff --git a/components/esp_hw_support/include/esp_fault.h b/components/esp_hw_support/include/esp_fault.h
index fe9de33425..910ba59d06 100644
--- a/components/esp_hw_support/include/esp_fault.h
+++ b/components/esp_hw_support/include/esp_fault.h
@@ -1,16 +1,8 @@
-// Copyright 2020 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2020-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 #include "sdkconfig.h"
 #include "soc/rtc_cntl_reg.h"
 #include "esp_rom_sys.h"
diff --git a/components/esp_hw_support/include/esp_interface.h b/components/esp_hw_support/include/esp_interface.h
index 950c05bb22..fdb4c0056c 100644
--- a/components/esp_hw_support/include/esp_interface.h
+++ b/components/esp_hw_support/include/esp_interface.h
@@ -1,16 +1,8 @@
-// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 
 #ifndef __ESP_INTERFACE_H__
diff --git a/components/esp_hw_support/include/esp_intr.h b/components/esp_hw_support/include/esp_intr.h
index c29dc9bfd1..0818ed3fea 100644
--- a/components/esp_hw_support/include/esp_intr.h
+++ b/components/esp_hw_support/include/esp_intr.h
@@ -1,16 +1,8 @@
-// Copyright 2010-2016 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2010-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 #pragma once
 #warning esp_intr.h is deprecated, please include esp_intr_alloc.h instead
diff --git a/components/esp_hw_support/include/esp_intr_alloc.h b/components/esp_hw_support/include/esp_intr_alloc.h
index 33f70b9597..a26fde9394 100644
--- a/components/esp_hw_support/include/esp_intr_alloc.h
+++ b/components/esp_hw_support/include/esp_intr_alloc.h
@@ -1,16 +1,8 @@
-// Copyright 2015-2020 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 #pragma once
 
diff --git a/components/esp_hw_support/include/esp_mac.h b/components/esp_hw_support/include/esp_mac.h
index fa1e63ce9a..f0efddfc2f 100644
--- a/components/esp_hw_support/include/esp_mac.h
+++ b/components/esp_hw_support/include/esp_mac.h
@@ -1,16 +1,8 @@
-// Copyright 2021 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 #pragma once
 
diff --git a/components/esp_hw_support/include/esp_private/esp_clk.h b/components/esp_hw_support/include/esp_private/esp_clk.h
index 14326898bd..5a4666fddd 100644
--- a/components/esp_hw_support/include/esp_private/esp_clk.h
+++ b/components/esp_hw_support/include/esp_private/esp_clk.h
@@ -1,16 +1,8 @@
-// Copyright 2015-2017 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 #pragma once
 #include <stdint.h>
diff --git a/components/esp_hw_support/include/esp_random.h b/components/esp_hw_support/include/esp_random.h
index cf4f408b51..a6b8a884b6 100644
--- a/components/esp_hw_support/include/esp_random.h
+++ b/components/esp_hw_support/include/esp_random.h
@@ -1,16 +1,8 @@
-// Copyright 2021 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 #pragma once
 
diff --git a/components/esp_hw_support/include/esp_sleep.h b/components/esp_hw_support/include/esp_sleep.h
index 000d020aeb..6a0b9d7d21 100644
--- a/components/esp_hw_support/include/esp_sleep.h
+++ b/components/esp_hw_support/include/esp_sleep.h
@@ -1,16 +1,8 @@
-// Copyright 2015-2017 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 #pragma once
 
diff --git a/components/esp_hw_support/include/soc/clk_ctrl_os.h b/components/esp_hw_support/include/soc/clk_ctrl_os.h
index f4d769b801..b5eff46930 100644
--- a/components/esp_hw_support/include/soc/clk_ctrl_os.h
+++ b/components/esp_hw_support/include/soc/clk_ctrl_os.h
@@ -1,16 +1,8 @@
-// Copyright 2020 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2020-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 #include "soc/rtc.h"
 
diff --git a/components/esp_hw_support/include/soc/compare_set.h b/components/esp_hw_support/include/soc/compare_set.h
index ddbaeb7e3d..b5a35fa701 100644
--- a/components/esp_hw_support/include/soc/compare_set.h
+++ b/components/esp_hw_support/include/soc/compare_set.h
@@ -1,16 +1,8 @@
-// Copyright 2015-2019 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 #pragma once
 
diff --git a/components/esp_hw_support/include/soc/cpu.h b/components/esp_hw_support/include/soc/cpu.h
index 0e4d1688ca..526171bc1c 100644
--- a/components/esp_hw_support/include/soc/cpu.h
+++ b/components/esp_hw_support/include/soc/cpu.h
@@ -1,16 +1,8 @@
-// Copyright 2010-2016 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2010-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 #ifndef _SOC_CPU_H
 #define _SOC_CPU_H
diff --git a/components/esp_hw_support/include/soc/esp32/clk.h b/components/esp_hw_support/include/soc/esp32/clk.h
index 31902ebad0..a9ed302852 100644
--- a/components/esp_hw_support/include/soc/esp32/clk.h
+++ b/components/esp_hw_support/include/soc/esp32/clk.h
@@ -1,16 +1,8 @@
-// Copyright 2015-2017 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 #pragma once
 #include "esp_private/esp_clk.h"
diff --git a/components/esp_hw_support/include/soc/esp32c3/clk.h b/components/esp_hw_support/include/soc/esp32c3/clk.h
index 31902ebad0..a9ed302852 100644
--- a/components/esp_hw_support/include/soc/esp32c3/clk.h
+++ b/components/esp_hw_support/include/soc/esp32c3/clk.h
@@ -1,16 +1,8 @@
-// Copyright 2015-2017 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 #pragma once
 #include "esp_private/esp_clk.h"
diff --git a/components/esp_hw_support/include/soc/esp32c3/dport_access.h b/components/esp_hw_support/include/soc/esp32c3/dport_access.h
index f3f7007a9c..e5aedd2e1b 100644
--- a/components/esp_hw_support/include/soc/esp32c3/dport_access.h
+++ b/components/esp_hw_support/include/soc/esp32c3/dport_access.h
@@ -1,16 +1,8 @@
-// Copyright 2010-2020 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2010-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 #ifndef _ESP_DPORT_ACCESS_H_
 #define _ESP_DPORT_ACCESS_H_
diff --git a/components/esp_hw_support/include/soc/esp32c3/esp_crypto_lock.h b/components/esp_hw_support/include/soc/esp32c3/esp_crypto_lock.h
index 3149d34692..67a08741b5 100644
--- a/components/esp_hw_support/include/soc/esp32c3/esp_crypto_lock.h
+++ b/components/esp_hw_support/include/soc/esp32c3/esp_crypto_lock.h
@@ -1,16 +1,8 @@
-// Copyright 2015-2020 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 #pragma once
 
diff --git a/components/esp_hw_support/include/soc/esp32c3/esp_ds.h b/components/esp_hw_support/include/soc/esp32c3/esp_ds.h
index 911e44c837..9d59aa71c6 100644
--- a/components/esp_hw_support/include/soc/esp32c3/esp_ds.h
+++ b/components/esp_hw_support/include/soc/esp32c3/esp_ds.h
@@ -1,16 +1,8 @@
-// Copyright 2020 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2020-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 #pragma once
 
diff --git a/components/esp_hw_support/include/soc/esp32c3/esp_hmac.h b/components/esp_hw_support/include/soc/esp32c3/esp_hmac.h
index 391ba12fe1..cea11ee1ba 100644
--- a/components/esp_hw_support/include/soc/esp32c3/esp_hmac.h
+++ b/components/esp_hw_support/include/soc/esp32c3/esp_hmac.h
@@ -1,16 +1,8 @@
-// Copyright 2015-2020 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 #ifndef _ESP_HMAC_H_
 #define _ESP_HMAC_H_
diff --git a/components/esp_hw_support/include/soc/esp32c3/memprot.h b/components/esp_hw_support/include/soc/esp32c3/memprot.h
index 0d7e6ca40d..818cd677dc 100644
--- a/components/esp_hw_support/include/soc/esp32c3/memprot.h
+++ b/components/esp_hw_support/include/soc/esp32c3/memprot.h
@@ -1,16 +1,8 @@
-// Copyright 2020 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2020-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 
 /* INTERNAL API
diff --git a/components/esp_hw_support/include/soc/esp32c3/rtc.h b/components/esp_hw_support/include/soc/esp32c3/rtc.h
index b090ae5cfb..4d46831ded 100644
--- a/components/esp_hw_support/include/soc/esp32c3/rtc.h
+++ b/components/esp_hw_support/include/soc/esp32c3/rtc.h
@@ -1,16 +1,8 @@
-// Copyright 2015-2020 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 #pragma once
 
diff --git a/components/esp_hw_support/include/soc/esp32h2/clk.h b/components/esp_hw_support/include/soc/esp32h2/clk.h
index 31902ebad0..a9ed302852 100644
--- a/components/esp_hw_support/include/soc/esp32h2/clk.h
+++ b/components/esp_hw_support/include/soc/esp32h2/clk.h
@@ -1,16 +1,8 @@
-// Copyright 2015-2017 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 #pragma once
 #include "esp_private/esp_clk.h"
diff --git a/components/esp_hw_support/include/soc/esp32h2/dport_access.h b/components/esp_hw_support/include/soc/esp32h2/dport_access.h
index f3f7007a9c..e5aedd2e1b 100644
--- a/components/esp_hw_support/include/soc/esp32h2/dport_access.h
+++ b/components/esp_hw_support/include/soc/esp32h2/dport_access.h
@@ -1,16 +1,8 @@
-// Copyright 2010-2020 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2010-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 #ifndef _ESP_DPORT_ACCESS_H_
 #define _ESP_DPORT_ACCESS_H_
diff --git a/components/esp_hw_support/include/soc/esp32h2/esp_crypto_lock.h b/components/esp_hw_support/include/soc/esp32h2/esp_crypto_lock.h
index 3149d34692..67a08741b5 100644
--- a/components/esp_hw_support/include/soc/esp32h2/esp_crypto_lock.h
+++ b/components/esp_hw_support/include/soc/esp32h2/esp_crypto_lock.h
@@ -1,16 +1,8 @@
-// Copyright 2015-2020 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 #pragma once
 
diff --git a/components/esp_hw_support/include/soc/esp32h2/esp_ds.h b/components/esp_hw_support/include/soc/esp32h2/esp_ds.h
index 79e963fc6b..6bad707558 100644
--- a/components/esp_hw_support/include/soc/esp32h2/esp_ds.h
+++ b/components/esp_hw_support/include/soc/esp32h2/esp_ds.h
@@ -1,16 +1,8 @@
-// Copyright 2020 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2020-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 #pragma once
 
diff --git a/components/esp_hw_support/include/soc/esp32h2/esp_hmac.h b/components/esp_hw_support/include/soc/esp32h2/esp_hmac.h
index 391ba12fe1..cea11ee1ba 100644
--- a/components/esp_hw_support/include/soc/esp32h2/esp_hmac.h
+++ b/components/esp_hw_support/include/soc/esp32h2/esp_hmac.h
@@ -1,16 +1,8 @@
-// Copyright 2015-2020 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 #ifndef _ESP_HMAC_H_
 #define _ESP_HMAC_H_
diff --git a/components/esp_hw_support/include/soc/esp32h2/memprot.h b/components/esp_hw_support/include/soc/esp32h2/memprot.h
index 2567b604b0..75228580ff 100644
--- a/components/esp_hw_support/include/soc/esp32h2/memprot.h
+++ b/components/esp_hw_support/include/soc/esp32h2/memprot.h
@@ -1,16 +1,8 @@
-// Copyright 2020 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2020-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 
 /* INTERNAL API
diff --git a/components/esp_hw_support/include/soc/esp32h2/rtc.h b/components/esp_hw_support/include/soc/esp32h2/rtc.h
index cca748df91..75460416c7 100644
--- a/components/esp_hw_support/include/soc/esp32h2/rtc.h
+++ b/components/esp_hw_support/include/soc/esp32h2/rtc.h
@@ -1,16 +1,8 @@
-// Copyright 2015-2020 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 #pragma once
 
diff --git a/components/esp_hw_support/include/soc/esp32s2/clk.h b/components/esp_hw_support/include/soc/esp32s2/clk.h
index 31902ebad0..a9ed302852 100644
--- a/components/esp_hw_support/include/soc/esp32s2/clk.h
+++ b/components/esp_hw_support/include/soc/esp32s2/clk.h
@@ -1,16 +1,8 @@
-// Copyright 2015-2017 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 #pragma once
 #include "esp_private/esp_clk.h"
diff --git a/components/esp_hw_support/include/soc/esp32s2/dport_access.h b/components/esp_hw_support/include/soc/esp32s2/dport_access.h
index 6ba6fd6555..e5aedd2e1b 100644
--- a/components/esp_hw_support/include/soc/esp32s2/dport_access.h
+++ b/components/esp_hw_support/include/soc/esp32s2/dport_access.h
@@ -1,16 +1,8 @@
-// Copyright 2010-2017 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2010-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 #ifndef _ESP_DPORT_ACCESS_H_
 #define _ESP_DPORT_ACCESS_H_
diff --git a/components/esp_hw_support/include/soc/esp32s2/esp_crypto_lock.h b/components/esp_hw_support/include/soc/esp32s2/esp_crypto_lock.h
index e1df0399f3..2c337c9371 100644
--- a/components/esp_hw_support/include/soc/esp32s2/esp_crypto_lock.h
+++ b/components/esp_hw_support/include/soc/esp32s2/esp_crypto_lock.h
@@ -1,16 +1,8 @@
-// Copyright 2015-2020 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 #pragma once
 
diff --git a/components/esp_hw_support/include/soc/esp32s2/esp_ds.h b/components/esp_hw_support/include/soc/esp32s2/esp_ds.h
index 12906377ee..2ef0bd00fb 100644
--- a/components/esp_hw_support/include/soc/esp32s2/esp_ds.h
+++ b/components/esp_hw_support/include/soc/esp32s2/esp_ds.h
@@ -1,16 +1,8 @@
-// Copyright 2020 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2020-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 #pragma once
 
diff --git a/components/esp_hw_support/include/soc/esp32s2/esp_hmac.h b/components/esp_hw_support/include/soc/esp32s2/esp_hmac.h
index 5fa836c47d..409217c06b 100644
--- a/components/esp_hw_support/include/soc/esp32s2/esp_hmac.h
+++ b/components/esp_hw_support/include/soc/esp32s2/esp_hmac.h
@@ -1,16 +1,8 @@
-// Copyright 2015-2020 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 #ifndef _ESP_HMAC_H_
 #define _ESP_HMAC_H_
diff --git a/components/esp_hw_support/include/soc/esp32s2/memprot.h b/components/esp_hw_support/include/soc/esp32s2/memprot.h
index c63fb395e6..55ad7258bb 100644
--- a/components/esp_hw_support/include/soc/esp32s2/memprot.h
+++ b/components/esp_hw_support/include/soc/esp32s2/memprot.h
@@ -1,16 +1,8 @@
-// Copyright 2020 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2020-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 
 /* INTERNAL API
diff --git a/components/esp_hw_support/include/soc/esp32s2/rtc.h b/components/esp_hw_support/include/soc/esp32s2/rtc.h
index 296292e21d..3ab96b3787 100644
--- a/components/esp_hw_support/include/soc/esp32s2/rtc.h
+++ b/components/esp_hw_support/include/soc/esp32s2/rtc.h
@@ -1,16 +1,8 @@
-// Copyright 2015-2017 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 #pragma once
 #include <stdint.h>
diff --git a/components/esp_hw_support/include/soc/esp32s2/spiram.h b/components/esp_hw_support/include/soc/esp32s2/spiram.h
index 47871e627f..7750d45abe 100644
--- a/components/esp_hw_support/include/soc/esp32s2/spiram.h
+++ b/components/esp_hw_support/include/soc/esp32s2/spiram.h
@@ -1,16 +1,8 @@
-// Copyright 2015-2017 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 
 #ifndef __ESP_SPIRAM_H
diff --git a/components/esp_hw_support/include/soc/esp32s3/clk.h b/components/esp_hw_support/include/soc/esp32s3/clk.h
index 31902ebad0..a9ed302852 100644
--- a/components/esp_hw_support/include/soc/esp32s3/clk.h
+++ b/components/esp_hw_support/include/soc/esp32s3/clk.h
@@ -1,16 +1,8 @@
-// Copyright 2015-2017 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 #pragma once
 #include "esp_private/esp_clk.h"
diff --git a/components/esp_hw_support/include/soc/esp32s3/dport_access.h b/components/esp_hw_support/include/soc/esp32s3/dport_access.h
index f3f7007a9c..e5aedd2e1b 100644
--- a/components/esp_hw_support/include/soc/esp32s3/dport_access.h
+++ b/components/esp_hw_support/include/soc/esp32s3/dport_access.h
@@ -1,16 +1,8 @@
-// Copyright 2010-2020 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2010-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 #ifndef _ESP_DPORT_ACCESS_H_
 #define _ESP_DPORT_ACCESS_H_
diff --git a/components/esp_hw_support/include/soc/esp32s3/esp_crypto_lock.h b/components/esp_hw_support/include/soc/esp32s3/esp_crypto_lock.h
index 781ac07780..ee59893baa 100644
--- a/components/esp_hw_support/include/soc/esp32s3/esp_crypto_lock.h
+++ b/components/esp_hw_support/include/soc/esp32s3/esp_crypto_lock.h
@@ -1,16 +1,8 @@
-// Copyright 2015-2020 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 #pragma once
 
diff --git a/components/esp_hw_support/include/soc/esp32s3/memprot.h b/components/esp_hw_support/include/soc/esp32s3/memprot.h
index 7e47a8cfa3..948e067668 100644
--- a/components/esp_hw_support/include/soc/esp32s3/memprot.h
+++ b/components/esp_hw_support/include/soc/esp32s3/memprot.h
@@ -1,16 +1,8 @@
-// Copyright 2020 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2020-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 
 /* INTERNAL API
diff --git a/components/esp_hw_support/include/soc/esp32s3/rtc.h b/components/esp_hw_support/include/soc/esp32s3/rtc.h
index 296292e21d..3ab96b3787 100644
--- a/components/esp_hw_support/include/soc/esp32s3/rtc.h
+++ b/components/esp_hw_support/include/soc/esp32s3/rtc.h
@@ -1,16 +1,8 @@
-// Copyright 2015-2017 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 #pragma once
 #include <stdint.h>
diff --git a/components/esp_hw_support/include/soc/esp32s3/spiram.h b/components/esp_hw_support/include/soc/esp32s3/spiram.h
index 863f0c48aa..7efb616946 100644
--- a/components/esp_hw_support/include/soc/esp32s3/spiram.h
+++ b/components/esp_hw_support/include/soc/esp32s3/spiram.h
@@ -1,16 +1,8 @@
-// Copyright 2015-2020 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 
 #ifndef __ESP_SPIRAM_H
diff --git a/components/esp_hw_support/include/soc/rtc_wdt.h b/components/esp_hw_support/include/soc/rtc_wdt.h
index 7d13e6a4f7..97d1d8425b 100644
--- a/components/esp_hw_support/include/soc/rtc_wdt.h
+++ b/components/esp_hw_support/include/soc/rtc_wdt.h
@@ -1,16 +1,8 @@
-// Copyright 2018 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2018-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 /* Recommendation of using API RTC_WDT.
 1) Setting and enabling rtc_wdt:
diff --git a/components/esp_hw_support/include/soc/spinlock.h b/components/esp_hw_support/include/soc/spinlock.h
index 66baa93066..97cc9e514a 100644
--- a/components/esp_hw_support/include/soc/spinlock.h
+++ b/components/esp_hw_support/include/soc/spinlock.h
@@ -1,16 +1,8 @@
-// Copyright 2015-2019 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 #pragma once
 
 #include <stdint.h>
diff --git a/components/esp_hw_support/include/soc_log.h b/components/esp_hw_support/include/soc_log.h
index ea2ecce8f8..64268433fb 100644
--- a/components/esp_hw_support/include/soc_log.h
+++ b/components/esp_hw_support/include/soc_log.h
@@ -1,16 +1,8 @@
-// Copyright 2016-2017 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2016-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 #pragma once
 #include "esp_rom_sys.h"