boards: silabs: Add support for xg22_ek2710a board, additional xG22 SoCs

boards/silabs/dev_kits/xg22_ek2710a/Kconfig.defconfig

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+# Copyright The Zephyr Project Contributors
+# SPDX-License-Identifier: Apache-2.0
+
+if BOARD_XG22_EK2710A
+
+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
+
+if BT
+
+config FPU
+	default y
+
+config COMMON_LIBC_MALLOC_ARENA_SIZE
+	default 8192
+
+config MAIN_STACK_SIZE
+	default 3072 if PM
+	default 2304
+
+endif # BT
+
+endif # BOARD_XG22_EK2710A

boards/silabs/dev_kits/xg22_ek2710a/Kconfig.xg22_ek2710a

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+# Copyright The Zephyr Project Contributors
+# SPDX-License-Identifier: Apache-2.0
+
+config BOARD_XG22_EK2710A
+	select SOC_PART_NUMBER_EFR32MG22E224F512IM40

boards/silabs/dev_kits/xg22_ek2710a/board.cmake

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+# Copyright The Zephyr Project Contributors
+# SPDX-License-Identifier: Apache-2.0
+
+board_runner_args(jlink "--device=EFR32MG22C224F512IM40" "--reset-after-load")
+include(${ZEPHYR_BASE}/boards/common/jlink.board.cmake)
+
+board_runner_args(silabs_commander "--device=EFR32MG22E224F512IM40")
+include(${ZEPHYR_BASE}/boards/common/silabs_commander.board.cmake)

boards/silabs/dev_kits/xg22_ek2710a/board.yml

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+board:
+  name: xg22_ek2710a
+  full_name: EFR32xG22 Explorer Kit (xG22-EK2710A)
+  vendor: silabs
+  socs:
+    - name: efr32mg22e224f512im40

boards/silabs/dev_kits/xg22_ek2710a/doc/index.rst

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+.. zephyr:board:: xg22_ek2710a
+
+Overview
+********
+
+The EFR32xG22E Explorer Kit (xG22-EK2710A) contains
+a Wireless System-On-Chip from the EFR32MG22 family built on an
+ARM Cortex®-M33 processor with excellent low power capabilities.
+
+Hardware
+********
+
+- EFR32MG22E224F512IM40 Mighty Gecko SoC
+- CPU core: ARM Cortex®-M33 with FPU
+- Flash memory: 512 kB
+- RAM: 32 kB
+- Transmit power: up to +6 dBm
+- Operation frequency: 2.4 GHz
+- Crystal for HFXO (38.4 MHz)
+
+For more information about the EFR32MG22 SoC and BRD2710A board, refer to these
+documents:
+
+- `EFR32MG22 Website`_
+- `EFR32MG22E Datasheet`_
+- `EFR32xG22 Reference Manual`_
+- `BRD2710A User Guide`_
+
+Supported Features
+==================
+
+.. zephyr:board-supported-hw::
+
+Connections and IOs
+===================
+
+In the following table, the column **Name** contains Pin names. For example, PA2
+means Pin number 2 on PORTA, as used in the board's datasheets and manuals.
+
++-------+-------------+-------------------------------------+
+| Name  | Function    | Usage                               |
++=======+=============+=====================================+
+| PA4   | GPIO        | LED0                                |
++-------+-------------+-------------------------------------+
+| PC7   | GPIO        | Push Button 0                       |
++-------+-------------+-------------------------------------+
+| PA5   | USART1_TX   | UART Console VCOM_TX US0_TX         |
++-------+-------------+-------------------------------------+
+| PA6   | USART1_RX   | UART Console VCOM_RX US0_RX         |
++-------+-------------+-------------------------------------+
+
+The default configuration can be found in
+:zephyr_file:`boards/silabs/dev_kits/xg22_ek2710a/xg22_ek2710a_defconfig`
+
+System Clock
+============
+
+The EFR32MG22E SoC is configured to use the 38.4 MHz external oscillator on the
+board, and can operate a clock speeds of up to 76.8 MHz.
+
+Serial Port
+===========
+
+The EFR32MG22E SoC has two USARTs and one EUART.
+USART1 is connected to the board controller and is used for the console.
+
+Programming and Debugging
+*************************
+
+.. zephyr:board-supported-runners::
+
+.. note::
+   Before using the kit the first time, you should update the J-Link firmware
+   in Simplicity Studio.
+
+Flashing
+========
+
+The sample application :zephyr:code-sample:`hello_world` is used for this example.
+Build the Zephyr kernel and application:
+
+.. zephyr-app-commands::
+   :zephyr-app: samples/hello_world
+   :board: xg22_ek2710a
+   :goals: build
+
+Connect the xg22_ek2710a to your host computer using the USB port and you
+should see a USB connection.
+
+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'll see the following message on the corresponding serial port
+terminal session:
+
+.. code-block:: console
+
+   Hello World! xg22_ek2710a/efr32mg22e224f512im40
+
+Bluetooth
+=========
+
+To use the BLE function, run the command below to retrieve necessary binary
+blobs from the SiLabs HAL repository.
+
+.. code-block:: console
+
+   west blobs fetch hal_silabs
+
+Then build the Zephyr kernel and a Bluetooth sample with the following
+command. The :zephyr:code-sample:`bluetooth_observer` sample application is used in
+this example.
+
+.. zephyr-app-commands::
+   :zephyr-app: samples/bluetooth/observer
+   :board: xg22_ek2710a
+   :goals: build
+
+.. _EFR32MG22 Website:
+   https://www.silabs.com/wireless/zigbee/efr32mg22-series-2-socs#
+
+.. _EFR32MG22E Datasheet:
+   https://www.silabs.com/documents/public/data-sheets/efr32mg22e-datasheet.pdf
+
+.. _EFR32xG22 Reference Manual:
+   https://www.silabs.com/documents/public/reference-manuals/efr32xg22-rm.pdf
+
+.. _BRD2710A User Guide:
+   https://www.silabs.com/documents/public/user-guides/ug582-brd2710a-user-guide.pdf

boards/silabs/dev_kits/xg22_ek2710a/xg22_ek2710a-pinctrl.dtsi

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+/*
+ * Copyright The Zephyr Project Contributors
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <dt-bindings/pinctrl/silabs/xg22-pinctrl.h>
+
+&pinctrl {
+	itm_default: itm_default {
+		group0 {
+			pins = <GPIO_SWV_PA3>;
+			drive-push-pull;
+			output-high;
+		};
+	};
+
+	i2c0_default: i2c0_default {
+		group0 {
+			pins = <I2C0_SCL_PD2>, <I2C0_SDA_PD3>;
+			bias-pull-up;
+			drive-open-drain;
+		};
+	};
+
+	pti_default: pti_default {
+		group0 {
+			pins = <PTI_DOUT_PC4>, <PTI_DFRAME_PC5>;
+			drive-push-pull;
+			output-high;
+		};
+	};
+
+	usart1_default: usart1_default {
+		group0 {
+			pins = <USART1_TX_PA5>;
+			drive-push-pull;
+			output-high;
+		};
+
+		group1 {
+			pins = <USART1_RX_PA6>;
+			input-enable;
+			silabs,input-filter;
+		};
+	};
+};