boards: silabs: radio_boards: Add silabs board support for BRD4180B board

Added board support for the Silicon Labs MG21 BRD4180B radio board

Signed-off-by: Arunmani Alagarsamy <arunmani.a@capgemini.com>

boards/silabs/radio_boards/slwrb4180b/Kconfig.defconfig

@@ -0,0 +1,18 @@
+# Copyright (c) 2020 Piotr Mienkowski
+# Copyright (c) 2020 TriaGnoSys GmbH
+# SPDX-License-Identifier: Apache-2.0
+
+if BOARD_SLWRB4180B
+
+config LOG_BACKEND_SWO_FREQ_HZ
+	default 875000
+	depends on LOG_BACKEND_SWO
+
+if SOC_GECKO_USE_RAIL
+
+config FPU
+	default y
+
+endif # SOC_GECKO_USE_RAIL
+
+endif # BOARD_SLWRB4180B

boards/silabs/radio_boards/slwrb4180b/Kconfig.slwrb4180b

@@ -0,0 +1,5 @@
+# Copyright (c) 2024 Capgemini
+# SPDX-License-Identifier: Apache-2.0
+
+config BOARD_SLWRB4180B
+	select SOC_PART_NUMBER_EFR32MG21A020F1024IM32

boards/silabs/radio_boards/slwrb4180b/board.cmake

@@ -0,0 +1,10 @@
+# SPDX-License-Identifier: Apache-2.0
+
+board_runner_args(jlink "--device=EFR32MG21AxxxF1024")
+include(${ZEPHYR_BASE}/boards/common/jlink.board.cmake)
+
+board_runner_args(openocd)
+include(${ZEPHYR_BASE}/boards/common/openocd.board.cmake)
+
+board_runner_args(silabs_commander "--device=EFR32MG21A020F1024IM32")
+include(${ZEPHYR_BASE}/boards/common/silabs_commander.board.cmake)

boards/silabs/radio_boards/slwrb4180b/board.yml

@@ -0,0 +1,6 @@
+board:
+  name: slwrb4180b
+  full_name: EFR32xG21 2.4 GHz 20 dBm (SLWRB4180B)
+  vendor: silabs
+  socs:
+    - name: efr32mg21a020f1024im32

boards/silabs/radio_boards/slwrb4180b/doc/index.rst

@@ -0,0 +1,133 @@
+.. zephyr:board:: slwrb4180b
+
+Overview
+********
+
+The EFR32MG21 Mighty Gecko Radio Board is one of the two
+radio boards delivered with `EFR32-SLWSTK6006A Website`_. It features a
+Wireless System-On-Chip (SoC) from the EFR32MG21 family, built on an
+ARM Cortex®-M33F processor, offering exceptional low-power performance.
+
+The SLWRB4180B radio board is designed to connect seamlessly with
+the Wireless Starter Kit Mainboards BRD4001A and BRD4002A
+
+Hardware
+********
+
+- EFR32MG21A020F1024IM32 Mighty Gecko SoC
+- CPU core: ARM Cortex®-M33 with FPU
+- Flash memory: 1024 kB
+- RAM: 96 kB
+- Transmit power: up to +20 dBm
+- Operation frequency: 2.4 GHz
+- Crystals for LFXO (32.768 kHz) and HFXO (38.4 MHz).
+
+For more information about the EFR32MG21 SoC and BRD4180B board, refer to these
+documents:
+
+- `EFR32MG21 Website`_
+- `EFR32MG21 Datasheet`_
+- `EFR32xG21 Reference Manual`_
+- `EFR32-SLWSTK6006A Website`_
+- `BRD4180B User Guide`_
+
+Supported Features
+==================
+
+The ``slwrb4180b`` board supports the following hardware features:
+
++-----------+------------+-------------------------------------+
+| Interface | Controller | Driver/Component                    |
++===========+============+=====================================+
+| MPU       | on-chip    | memory protection unit              |
++-----------+------------+-------------------------------------+
+| NVIC      | on-chip    | nested vector interrupt controller  |
++-----------+------------+-------------------------------------+
+| SYSTICK   | on-chip    | systick                             |
++-----------+------------+-------------------------------------+
+| COUNTER   | on-chip    | rtcc                                |
++-----------+------------+-------------------------------------+
+| FLASH     | on-chip    | flash memory                        |
++-----------+------------+-------------------------------------+
+| GPIO      | on-chip    | gpio                                |
++-----------+------------+-------------------------------------+
+| UART      | on-chip    | serial port-polling;                |
+|           |            | serial port-interrupt               |
++-----------+------------+-------------------------------------+
+| I2C       | on-chip    | i2c port-polling                    |
++-----------+------------+-------------------------------------+
+| WATCHDOG  | on-chip    | watchdog                            |
++-----------+------------+-------------------------------------+
+
+Connections and IOs
+===================
+
+In the following table, the column **Name** contains Pin names. For example, PD2
+means Pin number 2 on PORTD, as used in the board's datasheets and manuals.
+
++-------+-------------+-------------------------------------+
+| Name  | Function    | Usage                               |
++=======+=============+=====================================+
+| PD2   | GPIO        | LED0                                |
++-------+-------------+-------------------------------------+
+| PD3   | GPIO        | LED1                                |
++-------+-------------+-------------------------------------+
+| PB0   | GPIO        | Push Button PB0                     |
++-------+-------------+-------------------------------------+
+| PB1   | GPIO        | Push Button PB1                     |
++-------+-------------+-------------------------------------+
+| PD4   | GPIO        | Board Controller Enable             |
+|       |             | EFM_BC_EN                           |
++-------+-------------+-------------------------------------+
+| PA5   | USART1_TX   | UART Console EFM_BC_TX US1_TX       |
++-------+-------------+-------------------------------------+
+| PA6   | USART1_RX   | UART Console EFM_BC_RX US1_RX       |
++-------+-------------+-------------------------------------+
+
+The default configuration can be found in
+:zephyr_file:`boards/silabs/radio_boards/slwrb4180b/slwrb4180b_defconfig`
+
+Programming and Debugging
+*************************
+
+Flashing
+========
+
+Connect the BRD4001A or BRD4002A mainboard, with the BRD4180B radio module mounted,
+to your host computer via the USB port.
+
+Here is an example for the :zephyr:code-sample:`hello_world` application.
+
+.. zephyr-app-commands::
+   :zephyr-app: samples/hello_world
+   :board: slwrb4180b
+   :goals: flash
+
+Open a serial terminal (minicom, putty, etc.) with the following settings:
+
+- Speed: 115200
+- Data: 8 bits
+- Parity: None
+- Stop bits: 1
+
+Reset the board and you should see the following message in the terminal:
+
+.. code-block:: console
+
+   Hello World! slwrb4180b
+
+
+.. _EFR32-SLWSTK6006A Website:
+   https://www.silabs.com/products/development-tools/wireless/efr32xg21-wireless-starter-kit
+
+.. _BRD4180B User Guide:
+   https://www.silabs.com/documents/public/user-guides/ug427-brd4180b-user-guide.pdf
+
+.. _EFR32MG21 Website:
+   https://www.silabs.com/products/wireless/mesh-networking/efr32mg21-series-2-socs
+
+.. _EFR32MG21 Datasheet:
+   https://www.silabs.com/documents/public/data-sheets/efr32mg21-datasheet.pdf
+
+.. _EFR32xG21 Reference Manual:
+   https://www.silabs.com/documents/public/reference-manuals/efr32xg21-rm.pdf

boards/silabs/radio_boards/slwrb4180b/pre_dt_board.cmake

@@ -0,0 +1,5 @@
+# Copyright (c) 2021 Linaro Limited
+# SPDX-License-Identifier: Apache-2.0
+
+# SPI is implemented via usart so node name isn't spi@...
+list(APPEND EXTRA_DTC_FLAGS "-Wno-spi_bus_bridge")

boards/silabs/radio_boards/slwrb4180b/slwrb4180b-pinctrl.dtsi

@@ -0,0 +1,22 @@
+/*
+ * Copyright (c) 2024 Capgemini
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <dt-bindings/pinctrl/silabs/xg21-pinctrl.h>
+
+&pinctrl {
+	usart0_default: usart0_default {
+		group0 {
+			pins = <USART0_TX_PA5>;
+			drive-push-pull;
+			output-high;
+		};
+		group1 {
+			pins = <USART0_RX_PA6>;
+			input-enable;
+			silabs,input-filter;
+		};
+	};
+};

boards/silabs/radio_boards/slwrb4180b/slwrb4180b.dts

@@ -0,0 +1,183 @@
+/*
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Copyright (c) 2024 Capgemini
+ *
+ */
+
+/dts-v1/;
+#include <silabs/efr32mg21a020f1024im32.dtsi>
+#include <zephyr/dt-bindings/input/input-event-codes.h>
+#include "slwrb4180b-pinctrl.dtsi"
+
+/ {
+	model = "Silicon Labs BRD4180B (Wireless Gecko 21 Radio Board)";
+	compatible = "silabs,slwrb4180b", "silabs,efr32mg21";
+
+	chosen {
+		zephyr,console = &usart0;
+		zephyr,shell-uart = &usart0;
+		zephyr,sram = &sram0;
+		zephyr,flash = &flash0;
+		zephyr,code-partition = &slot0_partition;
+	};
+
+	/* These aliases are provided for compatibility with samples */
+	aliases {
+		led0 = &led0;
+		led1 = &led1;
+		sw0 = &button0;
+		sw1 = &button1;
+		watchdog0 = &wdog0;
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		led0: led_0 {
+			gpios = <&gpiod 2 0>;
+			label = "LED0";
+		};
+
+		led1: led_1 {
+			gpios = <&gpiod 3 0>;
+			label = "LED1";
+		};
+	};
+
+	buttons {
+		compatible = "gpio-keys";
+
+		button0: button_0 {
+			gpios = <&gpiob 0 GPIO_ACTIVE_LOW>;
+			label = "BTN0";
+			zephyr,code = <INPUT_KEY_0>;
+		};
+
+		button1: button_1 {
+			gpios = <&gpiob 1 GPIO_ACTIVE_LOW>;
+			label = "BTN1";
+			zephyr,code = <INPUT_KEY_1>;
+		};
+	};
+};
+
+&cpu0 {
+	clock-frequency = <76800000>;
+};
+
+&hfxo {
+	status = "okay";
+	ctune = <129>;
+	precision = <50>;
+};
+
+&lfxo {
+	status = "okay";
+	ctune = <79>;
+	precision = <50>;
+};
+
+&hfrcodpll {
+	clock-frequency = <DT_FREQ_K(76800)>;
+	clocks = <&hfxo>;
+	dpll-n = <3839>;
+	dpll-m = <1919>;
+	dpll-edge = "fall";
+	dpll-lock = "phase";
+	dpll-autorecover;
+};
+
+&em23grpaclk {
+	clocks = <&lfxo>;
+};
+
+&em4grpaclk {
+	clocks = <&lfxo>;
+};
+
+&rtccclk {
+	clocks = <&lfxo>;
+};
+
+&wdog0clk {
+	clocks = <&lfxo>;
+};
+
+&wdog1clk {
+	clocks = <&lfxo>;
+};
+
+&usart0 {
+	current-speed = <115200>;
+	pinctrl-0 = <&usart0_default>;
+	pinctrl-names = "default";
+	status = "okay";
+};
+
+&rtcc0 {
+	prescaler = <1>;
+	status = "okay";
+};
+
+&gpio {
+	status = "okay";
+};
+
+&gpioa {
+	status = "okay";
+};
+
+&gpiob {
+	status = "okay";
+};
+
+&gpioc {
+	status = "okay";
+};
+
+&gpiod {
+	status = "okay";
+
+	board-controller-enable {
+		gpio-hog;
+		gpios = <4 GPIO_ACTIVE_HIGH>;
+		output-high;
+	};
+};
+
+&wdog0 {
+	status = "okay";
+};
+
+&dma0 {
+	status = "okay";
+};
+
+&flash0 {
+	partitions {
+		compatible = "fixed-partitions";
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		boot_partition: partition@0 {
+			label = "mcuboot";
+			reg = <0x00000000 DT_SIZE_K(48)>;
+		};
+
+		slot0_partition: partition@c000 {
+			label = "image-0";
+			reg = <0x0000C000 DT_SIZE_K(472)>;
+		};
+
+		slot1_partition: partition@82000 {
+			label = "image-1";
+			reg = <0x00082000 DT_SIZE_K(472)>;
+		};
+
+		storage_partition: partition@F8000 {
+			label = "storage";
+			reg = <0x000F8000 DT_SIZE_K(32)>;
+		};
+	};
+};

boards/silabs/radio_boards/slwrb4180b/slwrb4180b.yaml

@@ -0,0 +1,18 @@
+identifier: slwrb4180b
+name: EFR32xG21 2.4 GHz 20 dBm Radio Board (SLWRB4180B)
+type: mcu
+arch: arm
+ram: 96
+flash: 1024
+toolchain:
+  - zephyr
+  - gnuarmemb
+  - xtools
+supported:
+  - counter
+  - gpio
+  - nvs
+  - uart
+  - dma
+  - watchdog
+vendor: silabs

boards/silabs/radio_boards/slwrb4180b/slwrb4180b_defconfig

@@ -0,0 +1,7 @@
+# SPDX-License-Identifier: Apache-2.0
+
+CONFIG_ARM_MPU=y
+CONFIG_CONSOLE=y
+CONFIG_UART_CONSOLE=y
+CONFIG_SERIAL=y
+CONFIG_GPIO=y

boards/silabs/radio_boards/slwrb4180b/support/openocd.cfg

@@ -0,0 +1,25 @@
+if {[info exists env(OPENOCD_INTERFACE)]} {
+	set INTERFACE $env(OPENOCD_INTERFACE)
+} else {
+	# By default connect over Debug USB port using the J-Link interface
+	set INTERFACE "jlink"
+}
+
+source [find interface/$INTERFACE.cfg]
+
+transport select swd
+
+set CHIPNAME efr32
+
+source [find target/efm32.cfg]
+
+$_TARGETNAME configure -event gdb-attach {
+	echo "Debugger attaching: halting execution"
+	reset halt
+	gdb_breakpoint_override hard
+}
+
+$_TARGETNAME configure -event gdb-detach {
+	echo "Debugger detaching: resuming execution"
+	resume
+}