From 7f50818a991dd0f777bf3645f6c89c76632a6384 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jan=20Brudn=C3=BD?= <jan.brudny@espressif.com>
Date: Tue, 10 Aug 2021 12:43:44 +0200
Subject: [PATCH] esp_hw_support: update copyright notice 3

---
 .../port/async_memcpy_impl_gdma.c             | 18 +++--------
 .../esp_hw_support/port/esp32/chip_info.c     | 18 +++--------
 .../port/esp32/private_include/regi2c_apll.h  | 18 +++--------
 .../port/esp32/private_include/regi2c_bbpll.h | 18 +++--------
 .../esp_hw_support/port/esp32/regi2c_ctrl.h   | 18 +++--------
 .../esp_hw_support/port/esp32/rtc_clk.c       | 18 +++--------
 .../port/esp32/rtc_clk_common.h               | 18 +++--------
 .../esp_hw_support/port/esp32/rtc_clk_init.c  | 18 +++--------
 .../esp_hw_support/port/esp32/rtc_init.c      | 18 +++--------
 components/esp_hw_support/port/esp32/rtc_pm.c | 18 +++--------
 .../esp_hw_support/port/esp32/rtc_sleep.c     | 18 +++--------
 .../esp_hw_support/port/esp32/rtc_time.c      | 18 +++--------
 .../esp_hw_support/port/esp32/rtc_wdt.c       | 18 +++--------
 .../esp_hw_support/port/esp32c3/chip_info.c   | 18 +++--------
 .../port/esp32c3/cpu_util_esp32c3.c           | 18 +++--------
 .../port/esp32c3/dport_access.c               | 18 +++--------
 .../port/esp32c3/esp_crypto_lock.c            | 18 +++--------
 .../esp_hw_support/port/esp32c3/esp_ds.c      | 18 +++--------
 .../esp_hw_support/port/esp32c3/esp_hmac.c    | 18 +++--------
 .../port/esp32c3/i2c_brownout.h               | 18 +++--------
 .../esp_hw_support/port/esp32c3/i2c_rtc_clk.h | 18 +++--------
 .../esp_hw_support/port/esp32c3/memprot.c     | 18 +++--------
 .../esp32c3/private_include/regi2c_bbpll.h    | 18 +++--------
 .../esp32c3/private_include/regi2c_bias.h     | 18 +++--------
 .../esp32c3/private_include/regi2c_brownout.h | 18 +++--------
 .../esp32c3/private_include/regi2c_dig_reg.h  | 18 +++--------
 .../esp32c3/private_include/regi2c_lp_bias.h  | 18 +++--------
 .../esp32c3/private_include/regi2c_saradc.h   | 18 +++--------
 .../esp_hw_support/port/esp32c3/regi2c_ctrl.h | 32 +++----------------
 .../esp_hw_support/port/esp32c3/rtc_clk.c     | 18 +++--------
 .../port/esp32c3/rtc_clk_common.h             | 18 +++--------
 .../port/esp32c3/rtc_clk_init.c               | 18 +++--------
 .../esp_hw_support/port/esp32c3/rtc_init.c    | 18 +++--------
 .../esp_hw_support/port/esp32c3/rtc_pm.c      | 18 +++--------
 .../esp_hw_support/port/esp32c3/rtc_sleep.c   | 18 +++--------
 .../esp_hw_support/port/esp32c3/rtc_time.c    | 18 +++--------
 .../port/include/esp_async_memcpy_impl.h      | 18 +++--------
 37 files changed, 185 insertions(+), 495 deletions(-)

diff --git a/components/esp_hw_support/port/async_memcpy_impl_gdma.c b/components/esp_hw_support/port/async_memcpy_impl_gdma.c
index 7ecf7b6866..e480d0649f 100644
--- a/components/esp_hw_support/port/async_memcpy_impl_gdma.c
+++ b/components/esp_hw_support/port/async_memcpy_impl_gdma.c
@@ -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 "freertos/FreeRTOS.h"
 #include "soc/periph_defs.h"
diff --git a/components/esp_hw_support/port/esp32/chip_info.c b/components/esp_hw_support/port/esp32/chip_info.c
index 023da564c8..2c26e10488 100644
--- a/components/esp_hw_support/port/esp32/chip_info.c
+++ b/components/esp_hw_support/port/esp32/chip_info.c
@@ -1,16 +1,8 @@
-// Copyright 2013-2016 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: 2013-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 #include <string.h>
 #include "esp_chip_info.h"
diff --git a/components/esp_hw_support/port/esp32/private_include/regi2c_apll.h b/components/esp_hw_support/port/esp32/private_include/regi2c_apll.h
index db49027546..f2651045ae 100644
--- a/components/esp_hw_support/port/esp32/private_include/regi2c_apll.h
+++ b/components/esp_hw_support/port/esp32/private_include/regi2c_apll.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/port/esp32/private_include/regi2c_bbpll.h b/components/esp_hw_support/port/esp32/private_include/regi2c_bbpll.h
index 8a9fcef372..b2d07574ab 100644
--- a/components/esp_hw_support/port/esp32/private_include/regi2c_bbpll.h
+++ b/components/esp_hw_support/port/esp32/private_include/regi2c_bbpll.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/port/esp32/regi2c_ctrl.h b/components/esp_hw_support/port/esp32/regi2c_ctrl.h
index 69f2919207..ea2870e99b 100644
--- a/components/esp_hw_support/port/esp32/regi2c_ctrl.h
+++ b/components/esp_hw_support/port/esp32/regi2c_ctrl.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/port/esp32/rtc_clk.c b/components/esp_hw_support/port/esp32/rtc_clk.c
index 79365bb181..b70c1e00b6 100644
--- a/components/esp_hw_support/port/esp32/rtc_clk.c
+++ b/components/esp_hw_support/port/esp32/rtc_clk.c
@@ -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
+ */
 
 #include <stdbool.h>
 #include <stdint.h>
diff --git a/components/esp_hw_support/port/esp32/rtc_clk_common.h b/components/esp_hw_support/port/esp32/rtc_clk_common.h
index dec179e3be..6721cf6f41 100644
--- a/components/esp_hw_support/port/esp32/rtc_clk_common.h
+++ b/components/esp_hw_support/port/esp32/rtc_clk_common.h
@@ -1,16 +1,8 @@
-// Copyright 2015-2018 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: 2015-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 #pragma once
 
diff --git a/components/esp_hw_support/port/esp32/rtc_clk_init.c b/components/esp_hw_support/port/esp32/rtc_clk_init.c
index c058c7c63e..e6c3bba1f3 100644
--- a/components/esp_hw_support/port/esp32/rtc_clk_init.c
+++ b/components/esp_hw_support/port/esp32/rtc_clk_init.c
@@ -1,16 +1,8 @@
-// Copyright 2015-2018 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: 2015-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 #include <stdbool.h>
 #include <stdint.h>
diff --git a/components/esp_hw_support/port/esp32/rtc_init.c b/components/esp_hw_support/port/esp32/rtc_init.c
index f86811a99f..0ebd6e2f05 100644
--- a/components/esp_hw_support/port/esp32/rtc_init.c
+++ b/components/esp_hw_support/port/esp32/rtc_init.c
@@ -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
+ */
 
 #include <stdint.h>
 
diff --git a/components/esp_hw_support/port/esp32/rtc_pm.c b/components/esp_hw_support/port/esp32/rtc_pm.c
index 47baedf952..43ca6cdd92 100644
--- a/components/esp_hw_support/port/esp32/rtc_pm.c
+++ b/components/esp_hw_support/port/esp32/rtc_pm.c
@@ -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
+ */
 
 #include <stdint.h>
 #include <assert.h>
diff --git a/components/esp_hw_support/port/esp32/rtc_sleep.c b/components/esp_hw_support/port/esp32/rtc_sleep.c
index fa8444fdcb..37db57a95f 100644
--- a/components/esp_hw_support/port/esp32/rtc_sleep.c
+++ b/components/esp_hw_support/port/esp32/rtc_sleep.c
@@ -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
+ */
 
 #include <stdint.h>
 #include "soc/soc.h"
diff --git a/components/esp_hw_support/port/esp32/rtc_time.c b/components/esp_hw_support/port/esp32/rtc_time.c
index 99539e0d55..95b59789ee 100644
--- a/components/esp_hw_support/port/esp32/rtc_time.c
+++ b/components/esp_hw_support/port/esp32/rtc_time.c
@@ -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
+ */
 
 #include <stdint.h>
 #include "esp_rom_sys.h"
diff --git a/components/esp_hw_support/port/esp32/rtc_wdt.c b/components/esp_hw_support/port/esp32/rtc_wdt.c
index facf8d4449..42ab860e69 100644
--- a/components/esp_hw_support/port/esp32/rtc_wdt.c
+++ b/components/esp_hw_support/port/esp32/rtc_wdt.c
@@ -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
+ */
 
 #include "soc/rtc_wdt.h"
 #include "soc/rtc.h"
diff --git a/components/esp_hw_support/port/esp32c3/chip_info.c b/components/esp_hw_support/port/esp32c3/chip_info.c
index ffd37a23c0..bb178b47fa 100644
--- a/components/esp_hw_support/port/esp32c3/chip_info.c
+++ b/components/esp_hw_support/port/esp32c3/chip_info.c
@@ -1,16 +1,8 @@
-// Copyright 2013-2020 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: 2013-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 #include <string.h>
 #include "esp_chip_info.h"
diff --git a/components/esp_hw_support/port/esp32c3/cpu_util_esp32c3.c b/components/esp_hw_support/port/esp32c3/cpu_util_esp32c3.c
index b070320bb2..3d797ea8c0 100644
--- a/components/esp_hw_support/port/esp32c3/cpu_util_esp32c3.c
+++ b/components/esp_hw_support/port/esp32c3/cpu_util_esp32c3.c
@@ -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 <assert.h>
 #include "soc/cpu.h"
 
diff --git a/components/esp_hw_support/port/esp32c3/dport_access.c b/components/esp_hw_support/port/esp32c3/dport_access.c
index 08b55a96fb..8364f5687e 100644
--- a/components/esp_hw_support/port/esp32c3/dport_access.c
+++ b/components/esp_hw_support/port/esp32c3/dport_access.c
@@ -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
+ */
 
 #include <stdint.h>
 #include <string.h>
diff --git a/components/esp_hw_support/port/esp32c3/esp_crypto_lock.c b/components/esp_hw_support/port/esp32c3/esp_crypto_lock.c
index 46a90ca08b..51b02be94d 100644
--- a/components/esp_hw_support/port/esp32c3/esp_crypto_lock.c
+++ b/components/esp_hw_support/port/esp32c3/esp_crypto_lock.c
@@ -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
+ */
 
 #include <sys/lock.h>
 
diff --git a/components/esp_hw_support/port/esp32c3/esp_ds.c b/components/esp_hw_support/port/esp32c3/esp_ds.c
index 3dbaa79dc5..1b63b21b96 100644
--- a/components/esp_hw_support/port/esp32c3/esp_ds.c
+++ b/components/esp_hw_support/port/esp32c3/esp_ds.c
@@ -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 <stdlib.h>
 #include <string.h>
diff --git a/components/esp_hw_support/port/esp32c3/esp_hmac.c b/components/esp_hw_support/port/esp32c3/esp_hmac.c
index 9f71353e30..4c6daeac6b 100644
--- a/components/esp_hw_support/port/esp32c3/esp_hmac.c
+++ b/components/esp_hw_support/port/esp32c3/esp_hmac.c
@@ -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
+ */
 
 #include <string.h>
 #include "driver/periph_ctrl.h"
diff --git a/components/esp_hw_support/port/esp32c3/i2c_brownout.h b/components/esp_hw_support/port/esp32c3/i2c_brownout.h
index 5fac2c91b3..1d2ab34411 100644
--- a/components/esp_hw_support/port/esp32c3/i2c_brownout.h
+++ b/components/esp_hw_support/port/esp32c3/i2c_brownout.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/port/esp32c3/i2c_rtc_clk.h b/components/esp_hw_support/port/esp32c3/i2c_rtc_clk.h
index 0bbe0ee1a1..dbb7d73dc4 100644
--- a/components/esp_hw_support/port/esp32c3/i2c_rtc_clk.h
+++ b/components/esp_hw_support/port/esp32c3/i2c_rtc_clk.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/port/esp32c3/memprot.c b/components/esp_hw_support/port/esp32c3/memprot.c
index 35251a8b90..2cd942a71c 100644
--- a/components/esp_hw_support/port/esp32c3/memprot.c
+++ b/components/esp_hw_support/port/esp32c3/memprot.c
@@ -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
  * implementation of PMS memory protection features
diff --git a/components/esp_hw_support/port/esp32c3/private_include/regi2c_bbpll.h b/components/esp_hw_support/port/esp32c3/private_include/regi2c_bbpll.h
index 842f702934..8235741d58 100644
--- a/components/esp_hw_support/port/esp32c3/private_include/regi2c_bbpll.h
+++ b/components/esp_hw_support/port/esp32c3/private_include/regi2c_bbpll.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/port/esp32c3/private_include/regi2c_bias.h b/components/esp_hw_support/port/esp32c3/private_include/regi2c_bias.h
index f459a344ba..e359ef0a69 100644
--- a/components/esp_hw_support/port/esp32c3/private_include/regi2c_bias.h
+++ b/components/esp_hw_support/port/esp32c3/private_include/regi2c_bias.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/port/esp32c3/private_include/regi2c_brownout.h b/components/esp_hw_support/port/esp32c3/private_include/regi2c_brownout.h
index d81751347c..1aa54a2017 100644
--- a/components/esp_hw_support/port/esp32c3/private_include/regi2c_brownout.h
+++ b/components/esp_hw_support/port/esp32c3/private_include/regi2c_brownout.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/port/esp32c3/private_include/regi2c_dig_reg.h b/components/esp_hw_support/port/esp32c3/private_include/regi2c_dig_reg.h
index 2510f43ae5..9d2032b60e 100644
--- a/components/esp_hw_support/port/esp32c3/private_include/regi2c_dig_reg.h
+++ b/components/esp_hw_support/port/esp32c3/private_include/regi2c_dig_reg.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/port/esp32c3/private_include/regi2c_lp_bias.h b/components/esp_hw_support/port/esp32c3/private_include/regi2c_lp_bias.h
index 0dae77107c..c50c1a941a 100644
--- a/components/esp_hw_support/port/esp32c3/private_include/regi2c_lp_bias.h
+++ b/components/esp_hw_support/port/esp32c3/private_include/regi2c_lp_bias.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/port/esp32c3/private_include/regi2c_saradc.h b/components/esp_hw_support/port/esp32c3/private_include/regi2c_saradc.h
index e9def9583d..1c35fd61ef 100644
--- a/components/esp_hw_support/port/esp32c3/private_include/regi2c_saradc.h
+++ b/components/esp_hw_support/port/esp32c3/private_include/regi2c_saradc.h
@@ -1,16 +1,8 @@
-// Copyright 2019-2020 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: 2019-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 #pragma once
 
diff --git a/components/esp_hw_support/port/esp32c3/regi2c_ctrl.h b/components/esp_hw_support/port/esp32c3/regi2c_ctrl.h
index 95f2626656..27e969eda8 100644
--- a/components/esp_hw_support/port/esp32c3/regi2c_ctrl.h
+++ b/components/esp_hw_support/port/esp32c3/regi2c_ctrl.h
@@ -1,30 +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.
-
-// 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/port/esp32c3/rtc_clk.c b/components/esp_hw_support/port/esp32c3/rtc_clk.c
index f47848a523..8816a0e935 100644
--- a/components/esp_hw_support/port/esp32c3/rtc_clk.c
+++ b/components/esp_hw_support/port/esp32c3/rtc_clk.c
@@ -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 <stdbool.h>
 #include <stdint.h>
diff --git a/components/esp_hw_support/port/esp32c3/rtc_clk_common.h b/components/esp_hw_support/port/esp32c3/rtc_clk_common.h
index c3e8a86e09..07f8c1243c 100644
--- a/components/esp_hw_support/port/esp32c3/rtc_clk_common.h
+++ b/components/esp_hw_support/port/esp32c3/rtc_clk_common.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/port/esp32c3/rtc_clk_init.c b/components/esp_hw_support/port/esp32c3/rtc_clk_init.c
index ca9dd74cba..f0bed9178f 100644
--- a/components/esp_hw_support/port/esp32c3/rtc_clk_init.c
+++ b/components/esp_hw_support/port/esp32c3/rtc_clk_init.c
@@ -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 <stdbool.h>
 #include <stdint.h>
diff --git a/components/esp_hw_support/port/esp32c3/rtc_init.c b/components/esp_hw_support/port/esp32c3/rtc_init.c
index 7a33720bea..86d5585639 100644
--- a/components/esp_hw_support/port/esp32c3/rtc_init.c
+++ b/components/esp_hw_support/port/esp32c3/rtc_init.c
@@ -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 <stdint.h>
 #include "sdkconfig.h"
diff --git a/components/esp_hw_support/port/esp32c3/rtc_pm.c b/components/esp_hw_support/port/esp32c3/rtc_pm.c
index 58f2719418..c73ae9edf3 100644
--- a/components/esp_hw_support/port/esp32c3/rtc_pm.c
+++ b/components/esp_hw_support/port/esp32c3/rtc_pm.c
@@ -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 <stdint.h>
 #include <assert.h>
diff --git a/components/esp_hw_support/port/esp32c3/rtc_sleep.c b/components/esp_hw_support/port/esp32c3/rtc_sleep.c
index 4dd1cad1e6..d6e8cbe571 100644
--- a/components/esp_hw_support/port/esp32c3/rtc_sleep.c
+++ b/components/esp_hw_support/port/esp32c3/rtc_sleep.c
@@ -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 <stdint.h>
 #include <stdlib.h>
diff --git a/components/esp_hw_support/port/esp32c3/rtc_time.c b/components/esp_hw_support/port/esp32c3/rtc_time.c
index 7792d5cf13..3378a84bda 100644
--- a/components/esp_hw_support/port/esp32c3/rtc_time.c
+++ b/components/esp_hw_support/port/esp32c3/rtc_time.c
@@ -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 <stdint.h>
 #include "esp32c3/rom/ets_sys.h"
diff --git a/components/esp_hw_support/port/include/esp_async_memcpy_impl.h b/components/esp_hw_support/port/include/esp_async_memcpy_impl.h
index 83a382de75..ce9c1fb88c 100644
--- a/components/esp_hw_support/port/include/esp_async_memcpy_impl.h
+++ b/components/esp_hw_support/port/include/esp_async_memcpy_impl.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
+ */
 
 #ifdef __cplusplus
 extern "C" {