Add ESP32-C2 (ESP8684) chip support

arch/risc-v/Kconfig

@@ -116,6 +116,40 @@ config ARCH_CHIP_ESP32C3_LEGACY
 	---help---
 		Espressif ESP32-C3 (RV32IMC). Legacy implementation.
 
+config ARCH_CHIP_ESP32C2
+	bool "ESP32-C2"
+	select ARCH_RV32
+	select ARCH_RV_ISA_M
+	select ARCH_RV_ISA_C
+	select ARCH_VECNOTIRQ
+	select ARCH_HAVE_BOOTLOADER if !ESPRESSIF_SIMPLE_BOOT
+	select ARCH_HAVE_I2CRESET
+	select ARCH_HAVE_MPU
+	select ARCH_HAVE_RESET
+	select ARCH_HAVE_RNG
+	select ARCH_HAVE_TICKLESS
+	select LIBC_ARCH_MEMCPY
+	select LIBC_ARCH_MEMCHR
+	select LIBC_ARCH_MEMCMP
+	select LIBC_ARCH_MEMMOVE
+	select LIBC_ARCH_MEMSET
+	select LIBC_ARCH_STRCHR
+	select LIBC_ARCH_STRCMP
+	select LIBC_ARCH_STRCPY
+	select LIBC_ARCH_STRLCPY
+	select LIBC_ARCH_STRNCPY
+	select LIBC_ARCH_STRLEN
+	select LIBC_ARCH_STRNLEN
+	select ESPRESSIF_SOC_RTC_MEM_SUPPORTED
+	select ARCH_HAVE_DEBUG
+	select ARCH_HAVE_RAMFUNCS
+	select ONESHOT_COUNT if ONESHOT
+	select ONESHOT_FAST_DIVISION if ONESHOT
+	select ARCH_MINIMAL_VECTORTABLE
+	select LIBC_ATOMIC_IRQ
+	---help---
+		ESP32-C2 chip (ESP8684) with a single RISC-V IMC core @ 120 MHz
+
 config ARCH_CHIP_ESP32C3
 	bool "ESP32-C3"
 	select ARCH_RV32
@@ -667,6 +701,7 @@ config ARCH_CHIP
 	default "gd32vw55x"             if ARCH_CHIP_GD32VW55X
 	default "bl602"                 if ARCH_CHIP_BL602
 	default "esp32c3-legacy"        if ARCH_CHIP_ESP32C3_LEGACY
+	default "esp32c2"               if ARCH_CHIP_ESP32C2
 	default "esp32c3"               if ARCH_CHIP_ESP32C3
 	default "esp32c6"               if ARCH_CHIP_ESP32C6
 	default "esp32h2"               if ARCH_CHIP_ESP32H2
@@ -915,6 +950,9 @@ endif
 if ARCH_CHIP_ESP32C3_LEGACY
 source "arch/risc-v/src/esp32c3-legacy/Kconfig"
 endif
+if ARCH_CHIP_ESP32C2
+source "arch/risc-v/src/esp32c2/Kconfig"
+endif
 if ARCH_CHIP_ESP32C3
 source "arch/risc-v/src/esp32c3/Kconfig"
 endif

arch/risc-v/include/esp32c2/.gitignore

@@ -0,0 +1,2 @@
+/gpio_sig_map.h
+/irq.h

arch/risc-v/include/esp32c2/chip.h

@@ -0,0 +1,34 @@
+/****************************************************************************
+ * arch/risc-v/include/esp32c2/chip.h
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you 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.
+ *
+ ****************************************************************************/
+
+#ifndef __ARCH_RISCV_INCLUDE_ESP32C2_CHIP_H
+#define __ARCH_RISCV_INCLUDE_ESP32C2_CHIP_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+#endif /* __ARCH_RISCV_INCLUDE_ESP32C2_CHIP_H */

arch/risc-v/src/common/espressif/CMakeLists.txt

@@ -233,7 +233,7 @@ if(DEFINED ENV{ESP_HAL_3RDPARTY_VERSION})
       CACHE STRING "ESP HAL 3rdparty version")
 else()
   set(ESP_HAL_3RDPARTY_VERSION
-      8d0a898910084206721a0892ab093021bca1496a
+      772738e470cbf64b7c0e481fe17b03c922cc6fb5
       CACHE STRING "ESP HAL 3rdparty version")
 endif()