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boards: silabs: add support for xg26_dk2608a dev kit
Add xg26 dev kit (xG26-DK2608A) support. Signed-off-by: Hong Nguyen <hong.nguyen.k54@gmail.com>
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‎boards/silabs/dev_kits/xg26_dk2608a/Kconfig.defconfig‎

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# SPDX-FileCopyrightText: Copyright The Zephyr Project Contributors
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# SPDX-License-Identifier: Apache-2.0
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if BOARD_XG26_DK2608A
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config LOG_BACKEND_SWO_FREQ_HZ
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default 875000
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depends on LOG_BACKEND_SWO
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config FPU
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default y if SOC_GECKO_USE_RAIL || BT
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if BT
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config MAIN_STACK_SIZE
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default 3072 if PM
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default 2304
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endif # BT
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endif # BOARD_XG26_DK2608A

‎boards/silabs/dev_kits/xg26_dk2608a/Kconfig.xg26_dk2608a‎

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# Copyright (c) 2026 Hong Nguyen
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# SPDX-License-Identifier: Apache-2.0
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config BOARD_XG26_DK2608A
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select SOC_EFR32MG26B510F3200IM68

‎boards/silabs/dev_kits/xg26_dk2608a/board.cmake‎

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# SPDX-FileCopyrightText: Copyright The Zephyr Project Contributors
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# SPDX-License-Identifier: Apache-2.0
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board_runner_args(jlink "--device=EFR32MG26BxxxF3200")
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include(${ZEPHYR_BASE}/boards/common/jlink.board.cmake)
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board_runner_args(silabs_commander "--device=${CONFIG_SOC}")
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include(${ZEPHYR_BASE}/boards/common/silabs_commander.board.cmake)

‎boards/silabs/dev_kits/xg26_dk2608a/board.yml‎

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board:
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name: xg26_dk2608a
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full_name: EFR32xG26 Dev Kit (xG26-DK2608A)
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vendor: silabs
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socs:
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- name: efr32mg26b510f3200im68

‎boards/silabs/dev_kits/xg26_dk2608a/doc/index.rst‎

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.. zephyr:board:: xg26_dk2608a
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Overview
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********
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The `EFR32xG26-DK2608A Dev Kit`_ is a compact, feature-packed development platform.
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The development platform includes a broad range of sensors, various peripheral devices,
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and a Qwiic connector, allowing you to explore the endless world of Sparkfun expansion hardware. It provides the fastest path to develop and prototype wireless IoT products.
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.. _EFR32xG26-DK2608A Dev Kit:
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https://www.silabs.com/development-tools/wireless/efr32xg26-dev-kit
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Hardware
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********
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- EFR32MG26B510F3200IM68 SoC
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- CPU core: 32-bit ARM® Cortex®-M33 with FPU
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- Flash memory: 3200 kB
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- RAM: 512 kB
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- Transmit power: up to +10 dBm
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- Operation frequency: 2.4 GHz
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- Crystals for LFXO (32.768 kHz) and HFXO (39 MHz) on the board.
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- Kit features:
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- Silicon Labs Si7021 relative humidity and temperature sensor
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- Silicon Labs Si7210 hall effect sensor
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- TDK InvenSense ICM-40627 6-axis inertial sensor
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- Two ICS-43434 MEMS microphones
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- Bosch Sensortec BMP384 barometric pressure sensor
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- Ambient light sensor (VEML6035)
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- Macronix ultra-low-power 64 Mbit SPI flash (MX25R6435F)
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- RGB LED and two push buttons
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- U.FL connector and precise external voltage reference for ADC measurements
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- Power enable signals and isolation switches for ultra-low-power operation
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- On-board SEGGER J-Link debugger (USB virtual COM port and Packet Trace Interface)
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- Mini Simplicity connector for access to energy profiling and advanced wireless network debugging
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- Breakout pads for GPIO access and connection to external hardware
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- Qwiic connector for connecting external hardware from the Qwiic Connect System
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- Reset button
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- Automatic switchover between USB and battery power
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- CR2032 coin cell holder and external battery connector
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For more information about the EFR32MG26 SoC and DK2608A Dev Kit, refer to these documents:
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- `EFR32MG26 Datasheet`_
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- `EFR32xG26 Reference Manual`_
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- `xG26-DK2608A User Guide`_
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.. _EFR32MG26 Datasheet:
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https://www.silabs.com/documents/public/data-sheets/efr32mg26-datasheet.pdf
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.. _EFR32xG26 Reference Manual:
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https://www.silabs.com/documents/public/reference-manuals/efr32xg26-rm.pdf
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.. _xG26-DK2608A User Guide:
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https://www.silabs.com/documents/public/user-guides/ug584-brd2608a-user-guide.pdf
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Supported Features
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==================
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.. zephyr:board-supported-hw::
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System Clock
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============
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The EFR32MG26 SoC is configured to use the HFRCODPLL oscillator at 78 MHz as the system clock,
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locked to the 39 MHz crystal oscillator on the board.
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Serial Port
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===========
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The EFR32MG26 SoC has 3 USARTs and 4 EUSARTs.
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USART0 is connected to the board controller and is used for the console.
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Programming and Debugging
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*************************
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.. zephyr:board-supported-runners::
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Flashing
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========
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Connect the DK2608A Dev Kit to your host computer using the USB port.
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Here is an example for the :zephyr:code-sample:`hello_world` application.
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.. zephyr-app-commands::
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:zephyr-app: samples/hello_world
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:board: xg26_dk2608a
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:goals: flash
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Open a serial terminal (minicom, putty, etc.) with the following settings:
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- Speed: 115200
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- Data: 8 bits
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- Parity: None
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- Stop bits: 1
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Reset the board and you should see the following message in the terminal:
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.. code-block:: console
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Hello World! xg26_dk2608a
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Bluetooth
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=========
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To use Bluetooth functionality, run the command below to retrieve necessary binary
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blobs from the Silicon Labs HAL repository.
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.. code-block:: console
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west blobs fetch hal_silabs
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Then build the Zephyr kernel and a Bluetooth sample with the following
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command. The :zephyr:code-sample:`bluetooth_observer` sample application is used in
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this example.
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.. zephyr-app-commands::
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:zephyr-app: samples/bluetooth/observer
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:board: xg26_dk2608a
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:goals: build

‎boards/silabs/dev_kits/xg26_dk2608a/doc/xg26_dk2608a.webp‎

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‎boards/silabs/dev_kits/xg26_dk2608a/pre_dt_board.cmake‎

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# Copyright (c) 2021 Linaro Limited
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# SPDX-License-Identifier: Apache-2.0
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# SPI is implemented via usart so node name isn't spi@...
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list(APPEND EXTRA_DTC_FLAGS "-Wno-spi_bus_bridge")

‎boards/silabs/dev_kits/xg26_dk2608a/xg26_dk2608a-pinctrl.dtsi‎

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/*
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* Copyright (c) 2026 Hong Nguyen
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <zephyr/dt-bindings/pinctrl/silabs/xg26-pinctrl.h>
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&pinctrl {
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eusart1_default: eusart1_default {
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group0 {
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pins = <EUSART1_TX_PC3>, <EUSART1_SCLK_PC1>;
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drive-push-pull;
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output-high;
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};
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group1 {
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pins = <EUSART1_RX_PC2>;
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input-enable;
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silabs,input-filter;
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};
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};
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itm_default: itm_default {
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group0 {
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pins = <GPIO_SWV_PA3>;
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drive-push-pull;
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output-high;
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};
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};
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i2c0_default: i2c0_default {
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group0 {
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pins = <I2C0_SCL_PC4>, <I2C0_SDA_PC5>;
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bias-pull-up;
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drive-open-drain;
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};
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};
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pti_default: pti_default {
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group0 {
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pins = <PTI_DOUT_PC6>, <PTI_DFRAME_PC7>;
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drive-push-pull;
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output-high;
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};
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};
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timer0_default: timer0_default {
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group0 {
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pins = <TIMER0_CC0_PD7>, <TIMER0_CC1_PA4>, <TIMER0_CC2_PB0>;
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drive-push-pull;
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output-high;
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};
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};
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usart0_default: usart0_default {
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group0 {
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pins = <USART0_TX_PA5>;
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drive-push-pull;
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output-high;
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};
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group1 {
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pins = <USART0_RX_PA6>;
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input-enable;
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silabs,input-filter;
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};
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};
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usart1_default: usart1_default {
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group0 {
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pins = <USART1_TX_PB5>;
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drive-push-pull;
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output-high;
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};
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group1 {
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pins = <USART1_RX_PB6>;
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input-enable;
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silabs,input-filter;
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};
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};
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};

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