boards: efr32_radio: Add Support for Silabs MG12 BRD4161A board

Added support in board directory for EFR32 MG12 BRD4161A board

Signed-off-by: Sharad Patil <p.sharad@capgemini.com>

boards/arm/efr32_radio/Kconfig.board

@@ -17,6 +17,12 @@ config BOARD_EFR32_RADIO_BRD4170A
 	select BOARD_EFR32_RADIO
 	select SOC_PART_NUMBER_EFR32MG12P433F1024GM68
 
+config BOARD_EFR32_RADIO_BRD4161A
+	bool "Silicon Labs BRD4161A (Mighty Gecko Radio Board)"
+	depends on SOC_SERIES_EFR32MG12P
+	select BOARD_EFR32_RADIO
+	select SOC_PART_NUMBER_EFR32MG12P432F1024GL125
+
 config BOARD_EFR32_RADIO_BRD4250B
 	bool "Silicon Labs BRD4250B (Flex Gecko Radio Board)"
 	depends on SOC_SERIES_EFR32FG1P

boards/arm/efr32_radio/Kconfig.defconfig

@@ -9,6 +9,7 @@ if BOARD_EFR32_RADIO
 config BOARD
 	default "efr32_radio_brd4104a" if BOARD_EFR32_RADIO_BRD4104A
 	default "efr32_radio_brd4170a" if BOARD_EFR32_RADIO_BRD4170A
+	default "efr32_radio_brd4161a" if BOARD_EFR32_RADIO_BRD4161A
 	default "efr32_radio_brd4250b" if BOARD_EFR32_RADIO_BRD4250B
 	default "efr32_radio_brd4180a" if BOARD_EFR32_RADIO_BRD4180A
 	default "efr32_radio_brd4187c" if BOARD_EFR32_RADIO_BRD4187C

boards/arm/efr32_radio/board.cmake

@@ -8,6 +8,8 @@ elseif(CONFIG_BOARD_EFR32_RADIO_BRD4250B)
 board_runner_args(jlink "--device=EFR32FG1PxxxF256")
 elseif(CONFIG_BOARD_EFR32_RADIO_BRD4170A)
 board_runner_args(jlink "--device=EFR32MG12PxxxF1024")
+elseif(CONFIG_BOARD_EFR32_RADIO_BRD4161A)
+board_runner_args(jlink "--device=EFR32MG12PxxxF1024")
 elseif(CONFIG_BOARD_EFR32_RADIO_BRD4180A)
 board_runner_args(jlink "--device=EFR32MG21AxxxF1024")
 elseif(CONFIG_BOARD_EFR32_RADIO_BRD4187C)

boards/arm/efr32_radio/doc/brd4161a.rst

@@ -0,0 +1,109 @@
+.. _efr32_radio_brd4161a:
+
+EFR32 BRD4161A (SLWRB4161A)
+###########################
+
+Overview
+********
+
+The EFR32MG12 Mighty Gecko Radio Board contains a Wireless System-On-Chip
+from the EFR32MG12 family built on an ARM Cortex®-M4F processor with excellent
+low power capabilities.
+
+.. figure:: efr32mg12-slwrb4161a.jpeg
+   :align: center
+   :alt: SLWRB4161A Mighty Gecko Radio Board
+
+   SLWRB4161A (image courtesy of Silicon Labs)
+
+The BRD4161A a.k.a. SLWRB4161A radio board plugs into the Wireless Starter Kit
+Mainboard BRD4001A and is supported as one of :ref:`efr32_radio`.
+
+Hardware
+********
+
+- EFR32MG12P432F1024GL125 Mighty Gecko SoC
+- CPU core: ARM Cortex®-M4 with FPU
+- Flash memory: 1024 kB
+- RAM: 256 kB
+- Transmit power: up to +19 dBm
+- Operation frequency: 2.4 GHz and Sub-Ghz
+- Crystals for LFXO (32.768 kHz) and HFXO (38.4 MHz).
+
+For more information about the EFR32MG12 SoC and BRD4170A board, refer to these
+documents:
+
+- `EFR32MG12 Website`_
+- `EFR32MG12 Datasheet`_
+- `EFR32xG12 Reference Manual`_
+- `BRD4161A User Guide`_
+
+Supported Features
+==================
+
+Please refer to
+:ref:`EFR32 Radio Board Supported Features <efr32_radio_supported_features>`
+for details of the configuration and common features supported by the
+efr32_radio_brd4161a board.
+
+The default configuration can be found in the defconfig file:
+
+	``boards/arm/efr32_radio/efr32_radio_brd4161a_defconfig``
+
+System Clock
+============
+
+The EFR32MG12P SoC is configured to use the 38.4 MHz external oscillator on the
+board.
+
+Serial Port
+===========
+
+The EFR32MG12P SoC has four USARTs and one Low Energy UARTs (LEUART).
+USART0 is connected to the board controller and is used for the console.
+
+Programming and Debugging
+*************************
+
+Please refer to
+:ref:`Programming and Debugging EFR32 Radio Board <efr32_radio_programming>`
+for details on the supported debug interfaces.
+
+Flashing
+========
+
+Connect the BRD4001A board with a mounted BRD4170A radio module to your host
+computer using the USB port.
+
+Here is an example for the :ref:`hello_world` application.
+
+.. zephyr-app-commands::
+   :zephyr-app: samples/hello_world
+   :board: efr32_radio_brd4161a
+   :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! efr32_radio_brd4161a
+
+
+.. _EFR32MG12 Website:
+   https://www.silabs.com/wireless/zigbee/efr32mg12-series-1-socs
+
+.. _EFR32MG12 Datasheet:
+   https://www.silabs.com/documents/public/data-sheets/efr32mg12-datasheet.pdf
+
+.. _EFR32xG12 Reference Manual:
+   https://www.silabs.com/documents/public/reference-manuals/efr32xg12-rm.pdf
+
+.. _BRD4161A User Guide:
+   https://www.silabs.com/documents/public/user-guides/ug260-brd4161a-user-guide.pdf

boards/arm/efr32_radio/efr32_radio_brd4161a.dts

@@ -0,0 +1,70 @@
+/*
+ * Copyright (c) 2020 Piotr Mienkowski
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/dts-v1/;
+#include <silabs/efr32mg12p432f1024gl125.dtsi>
+#include <silabs/efr32xg12p-pinctrl.dtsi>
+#include "efr32_radio.dtsi"
+
+/ {
+	model = "Silicon Labs BRD4161A (Mighty Gecko Radio Board)";
+	compatible = "silabs,efr32_radio_brd4161a", "silabs,efr32mg12p";
+
+	aliases {
+		spi-flash0 = &mx25r80;
+	};
+};
+
+&cpu0 {
+	clock-frequency = <38400000>;
+};
+
+&flash0 {
+	partitions {
+		compatible = "fixed-partitions";
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		/* Reserve 32 kB for the bootloader */
+		boot_partition: partition@0 {
+			label = "mcuboot";
+			reg = <0x0 0x00008000>;
+			read-only;
+		};
+
+		/* Reserve 220 kB for the application in slot 0 */
+		slot0_partition: partition@8000 {
+			label = "image-0";
+			reg = <0x00008000 0x00037000>;
+		};
+
+		/* Reserve 220 kB for the application in slot 1 */
+		slot1_partition: partition@3f000 {
+			label = "image-1";
+			reg = <0x0003f000 0x00037000>;
+		};
+
+		/* Reserve 32 kB for the scratch partition */
+		scratch_partition: partition@76000 {
+			label = "image-scratch";
+			reg = <0x00076000 0x00008000>;
+		};
+
+		/* Set 8Kb of storage at the end of the 512KB of flash */
+		storage_partition: partition@7e000 {
+			label = "storage";
+			reg = <0x0007e000 0x00002000>;
+		};
+
+	};
+};
+
+&usart0 {
+	current-speed = <115200>;
+	pinctrl-0 = <&usart0_default>;
+	pinctrl-names = "default";
+	status = "okay";
+};

boards/arm/efr32_radio/efr32_radio_brd4161a.yaml

@@ -0,0 +1,21 @@
+identifier: efr32_radio_brd4161a
+name: BRD4161A
+type: mcu
+arch: arm
+ram: 256
+flash: 1024
+toolchain:
+  - zephyr
+  - gnuarmemb
+supported:
+  - counter
+  - gpio
+  - nvs
+  - spi
+  - uart
+  - watchdog
+testing:
+  ignore_tags:
+    - net
+    - bluetooth
+vendor: silabs

boards/arm/efr32_radio/efr32_radio_brd4161a_defconfig

@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: Apache-2.0
+
+CONFIG_ARM_MPU=y
+CONFIG_SOC_SERIES_EFR32MG12P=y
+CONFIG_BOARD_EFR32_RADIO_BRD4161A=y
+CONFIG_CONSOLE=y
+CONFIG_UART_CONSOLE=y
+CONFIG_SERIAL=y
+CONFIG_GPIO=y
+CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC=38400000
+CONFIG_CMU_HFCLK_HFXO=y
+CONFIG_SOC_GECKO_EMU_DCDC=y
+CONFIG_SOC_GECKO_EMU_DCDC_MODE_ON=y