initial try

boards/dfrobot/firebeetle2_esp32c6/Kconfig

@@ -0,0 +1,7 @@
+# Copyright (c) 2024 Espressif Systems (Shanghai) Co., Ltd.
+# SPDX-License-Identifier: Apache-2.0
+
+config HEAP_MEM_POOL_ADD_SIZE_BOARD
+	int
+	default 4096 if BOARD_FIREBEETLE2_ESP32C6_ESP32C6_HPCORE
+	default 256 if BOARD_FIREBEETLE2_ESP32C6_ESP32C6_LPCORE

boards/dfrobot/firebeetle2_esp32c6/Kconfig.firebeetle2_esp32c6

@@ -0,0 +1,9 @@
+# ESP32C6 devkitc board configuration
+
+# Copyright (c) 2024 Espressif Systems (Shanghai) Co., Ltd.
+# SPDX-License-Identifier: Apache-2.0
+
+config BOARD_FIREBEETLE2_ESP32C6
+	select SOC_ESP32_C6_WROOM_1U_N4
+	select SOC_ESP32C6_HPCORE if BOARD_ESP32C6_DEVKITC_ESP32C6_HPCORE
+	select SOC_ESP32C6_LPCORE if BOARD_ESP32C6_DEVKITC_ESP32C6_LPCORE

boards/dfrobot/firebeetle2_esp32c6/Kconfig.sysbuild

@@ -0,0 +1,10 @@
+# Copyright (c) 2023 Espressif Systems (Shanghai) Co., Ltd.
+# SPDX-License-Identifier: Apache-2.0
+
+choice BOOTLOADER
+	default BOOTLOADER_MCUBOOT
+endchoice
+
+choice BOOT_SIGNATURE_TYPE
+	default BOOT_SIGNATURE_TYPE_NONE
+endchoice

boards/dfrobot/firebeetle2_esp32c6/board.cmake

@@ -0,0 +1,9 @@
+# SPDX-License-Identifier: Apache-2.0
+
+if(NOT "${OPENOCD}" MATCHES "^${ESPRESSIF_TOOLCHAIN_PATH}/.*")
+  set(OPENOCD OPENOCD-NOTFOUND)
+endif()
+find_program(OPENOCD openocd PATHS ${ESPRESSIF_TOOLCHAIN_PATH}/openocd-esp32/bin NO_DEFAULT_PATH)
+
+include(${ZEPHYR_BASE}/boards/common/esp32.board.cmake)
+include(${ZEPHYR_BASE}/boards/common/openocd.board.cmake)

boards/dfrobot/firebeetle2_esp32c6/board.yml

@@ -0,0 +1,6 @@
+board:
+  name: firebeetle2_esp32c6
+  full_name: FireBeetle 2 ESP32-C6
+  vendor: dfrobot
+  socs:
+  - name: esp32c6

boards/dfrobot/firebeetle2_esp32c6/firebeetle2_esp32c6_hpcore-pinctrl.dtsi

@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2023 Espressif Systems (Shanghai) Co., Ltd.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <zephyr/dt-bindings/pinctrl/esp-pinctrl-common.h>
+#include <dt-bindings/pinctrl/esp32c6-pinctrl.h>
+#include <zephyr/dt-bindings/pinctrl/esp32c6-gpio-sigmap.h>
+
+&pinctrl {
+
+	uart0_default: uart0_default {
+		group1 {
+			pinmux = <UART0_TX_GPIO16>;
+			output-high;
+		};
+		group2 {
+			pinmux = <UART0_RX_GPIO17>;
+			bias-pull-up;
+		};
+	};
+
+	spim2_default: spim2_default {
+		group1 {
+			pinmux = <SPIM2_MISO_GPIO2>,
+				 <SPIM2_SCLK_GPIO6>,
+				 <SPIM2_CSEL_GPIO10>;
+		};
+		group2 {
+			pinmux = <SPIM2_MOSI_GPIO7>;
+			output-low;
+		};
+	};
+
+	i2c0_default: i2c0_default {
+		group1 {
+			pinmux = <I2C0_SDA_GPIO6>,
+				 <I2C0_SCL_GPIO7>;
+			bias-pull-up;
+			drive-open-drain;
+			output-high;
+		};
+	};
+};

boards/dfrobot/firebeetle2_esp32c6/firebeetle2_esp32c6_hpcore.dts

@@ -0,0 +1,76 @@
+/*
+ * Copyright (c) 2023 Espressif Systems (Shanghai) Co., Ltd.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/dts-v1/;
+
+#include <espressif/esp32c6/esp32c6_wroom_n4.dtsi>
+#include "firebeetle2_esp32c6_hpcore-pinctrl.dtsi"
+#include <zephyr/dt-bindings/input/input-event-codes.h>
+#include <espressif/partitions_0x0_default_4M.dtsi>
+
+/ {
+	model = "DFRobot Firebeetle2 ESP32C6 HP Core";
+	compatible = "espressif,esp32c6";
+
+	chosen {
+		zephyr,sram = &sramhp;
+		zephyr,console = &usb_serial;
+		zephyr,shell-uart = &usb_serial;
+		zephyr,flash = &flash0;
+		zephyr,code-partition = &slot0_partition;
+	};
+
+	aliases {
+		sw0 = &user_button1;
+		watchdog0 = &wdt0;
+	};
+
+	gpio_keys {
+		compatible = "gpio-keys";
+		user_button1: button_1 {
+			label = "User SW1";
+			gpios = <&gpio0 9 (GPIO_PULL_UP | GPIO_ACTIVE_LOW)>;
+			zephyr,code = <INPUT_KEY_0>;
+		};
+	};
+};
+
+&uart0 {
+	current-speed = <115200>;
+	pinctrl-0 = <&uart0_default>;
+	pinctrl-names = "default";
+};
+
+&trng0 {
+	status = "okay";
+};
+
+&i2c0 {
+	status = "okay";
+	clock-frequency = <I2C_BITRATE_FAST>;
+	pinctrl-0 = <&i2c0_default>;
+	pinctrl-names = "default";
+};
+
+&spi2 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+	status = "okay";
+	pinctrl-0 = <&spim2_default>;
+	pinctrl-names = "default";
+};
+
+&gpio0 {
+	status = "okay";
+};
+
+&wdt0 {
+	status = "okay";
+};
+
+&wifi {
+	status = "okay";
+};

boards/dfrobot/firebeetle2_esp32c6/firebeetle2_esp32c6_hpcore.yaml

@@ -0,0 +1,22 @@
+identifier: firebeetle2_esp32c6/esp32c6/hpcore
+name: Firebeetle 2 ESP32C6 HP Core
+vendor: dfrobot
+type: mcu
+arch: riscv
+toolchain:
+  - zephyr
+supported:
+  - adc
+  - gpio
+  - watchdog
+  - uart
+  - dma
+  - pwm
+  - spi
+  - counter
+  - entropy
+  - i2c
+  - i2s
+testing:
+  ignore_tags:
+    - bluetooth

boards/dfrobot/firebeetle2_esp32c6/firebeetle2_esp32c6_hpcore_defconfig

@@ -0,0 +1,6 @@
+# SPDX-License-Identifier: Apache-2.0
+
+CONFIG_CONSOLE=y
+CONFIG_SERIAL=y
+CONFIG_UART_CONSOLE=y
+CONFIG_GPIO=y

boards/dfrobot/firebeetle2_esp32c6/firebeetle2_esp32c6_lpcore.dts

@@ -0,0 +1,26 @@
+/*
+ * Copyright (c) 2025 Espressif Systems (Shanghai) Co., Ltd.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+/dts-v1/;
+
+#include <espressif/esp32c6/esp32c6_lpcore_wroom_n4.dtsi>
+#include <espressif/partitions_0x0_default_4M.dtsi>
+
+/ {
+	model = "DFRobot FireBeetle2 ESP32-C6 LPCore";
+	compatible = "espressif,esp32c6";
+
+	chosen {
+		zephyr,sram = &sramlp;
+		zephyr,code-partition = &slot0_lpcore_partition;
+		zephyr,console = &lp_uart;
+		zephyr,shell-uart = &lp_uart;
+	};
+};
+
+&lp_uart {
+	status = "okay";
+	current-speed = <115200>;
+};

boards/dfrobot/firebeetle2_esp32c6/firebeetle2_esp32c6_lpcore.yaml

@@ -0,0 +1,19 @@
+identifier: firebeetle2_esp32c6/esp32c6/lpcore
+name: FireBeetle2 ESP32-C6 LPCore
+type: mcu
+arch: riscv
+toolchain:
+  - zephyr
+supported:
+  - cpu
+  - uart
+  - serial
+testing:
+  only_tags:
+    - introduction
+  ignore_tags:
+    - kernel
+    - posix
+    - chre
+    - cpp
+vendor: dfrobot

boards/dfrobot/firebeetle2_esp32c6/firebeetle2_esp32c6_lpcore_defconfig

@@ -0,0 +1,20 @@
+# Copyright (c) 2025 Espressif Systems (Shanghai) Co., Ltd.
+# SPDX-License-Identifier: Apache-2.0
+
+# Memory protection
+CONFIG_THREAD_STACK_INFO=n
+CONFIG_THREAD_CUSTOM_DATA=n
+
+# Boot
+CONFIG_BOOT_BANNER=n
+
+# Console
+CONFIG_SERIAL=y
+CONFIG_CONSOLE=y
+CONFIG_UART_CONSOLE=y
+CONFIG_PRINTK=n
+CONFIG_CBPRINTF_NANO=y
+
+# Build
+CONFIG_SIZE_OPTIMIZATIONS=y
+CONFIG_BUSYWAIT_CPU_LOOPS_PER_USEC=4