boards: id8: add Seven nRF9151 board

boards/id8/seven_nrf9151/Kconfig.defconfig

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+# Seven_nrf9151 board configuration
+
+# Copyright (c) 2026 ID8 Engineering AB
+# SPDX-License-Identifier: Apache-2.0
+#
+config HW_STACK_PROTECTION
+	default ARCH_HAS_STACK_PROTECTION
+
+if BOARD_SEVEN_NRF9151 || BOARD_SEVEN_NRF9151_NS
+
+config BOARD_SEVEN
+	select USE_DT_CODE_PARTITION if BOARD_SEVEN_NRF9151_NS
+
+endif # BOARD_SEVEN_NRF9151 || BOARD_SEVEN_NRF9151_NS

boards/id8/seven_nrf9151/Kconfig.seven

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+# Seven nRF9151 board configuration
+
+# Copyright (c) 2026 ID8 Engineering AB
+# SPDX-License-Identifier: Apache-2.0
+
+config BOARD_SEVEN
+	select SOC_NRF9151_LACA

boards/id8/seven_nrf9151/board.cmake

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+# SPDX-License-Identifier: Apache-2.0
+
+if(CONFIG_BOARD_SEVEN_NRF9151_NS)
+  set(TFM_PUBLIC_KEY_FORMAT "full")
+endif()
+
+if(CONFIG_TFM_FLASH_MERGED_BINARY)
+  set_property(TARGET runners_yaml_props_target PROPERTY hex_file tfm_merged.hex)
+endif()
+
+board_runner_args(jlink "--device=nRF9151_xxCA" "--speed=4000")
+include(${ZEPHYR_BASE}/boards/common/nrfutil.board.cmake)
+include(${ZEPHYR_BASE}/boards/common/nrfjprog.board.cmake)
+include(${ZEPHYR_BASE}/boards/common/jlink.board.cmake)

boards/id8/seven_nrf9151/board.yml

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+board:
+  name: seven
+  full_name: Seven nRF9151
+  vendor: id8
+  socs:
+  - name: nrf9151
+    variants:
+    - name: 'ns'

boards/id8/seven_nrf9151/doc/index.rst

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+.. zephyr:board:: seven
+
+Overview
+********
+
+Seven is a custom nRF9151-based board from ID8 Engineering AB. The
+``seven/nrf9151`` board target supports the Nordic Semiconductor nRF9151 ARM
+Cortex-M33 CPU with Armv8-M Security Extension.
+
+Hardware
+********
+
+Seven is based on the Nordic nRF9151 and provides:
+
+* LTE-M / NB-IoT modem support
+* GNSS support
+* 6 V to 36 V input supply
+* One Nano-SIM card holder
+* LTE and GNSS SMA connectors
+* One WS2812-compatible system LED on ``P0.18``
+* One passive buzzer on ``P0.19``
+* One debug UART on ``P0.27`` (TX) and ``P0.26`` (RX)
+* Two mikroBUS™ headers
+
+Supported Features
+==================
+
+.. zephyr:board-supported-hw::
+
+mikroBUS™ Notes
+==============
+
+Seven provides default interface routing for the mikroBUS™ sockets:
+
+* mikroBUS™ 1 uses ``uart2`` / ``i2c2`` / ``spi2``
+* mikroBUS™ 2 uses ``uart3`` / ``i2c3`` / ``spi3``
+
+Application overlays are expected to enable the function they need on the
+target socket. The generic ``&mikrobus_*`` labels target mikroBUS™ 1 by
+default, while the explicit ``&mikrobus_1_*`` and ``&mikrobus_2_*`` labels
+target a specific socket.
+
+On nRF9151, the serial blocks are multiplexed:
+
+* ``uart1`` / ``i2c1`` / ``spi1``
+* ``uart2`` / ``i2c2`` / ``spi2``
+* ``uart3`` / ``i2c3`` / ``spi3``
+
+Only one function from each group can be enabled at a time, so each mikroBUS™
+socket may use UART or I2C or SPI, but not multiple of those functions
+simultaneously.
+
+The on-board RGB LED uses ``spi1`` with MOSI on ``P0.18`` by default, so
+serial block 1 is not available for mikroBUS™ overlays unless that LED route
+is overridden.
+
+For ``seven/nrf9151/ns``, ``uart1`` is disabled by default to match the
+upstream ``nrf9151dk`` non-secure board behavior where TF-M uses it by
+default.
+
+Examples:
+
+* To place an I2C Click board on mikroBUS™ 1, enable ``&mikrobus_1_i2c`` and
+  add the device below it in an app overlay.
+* To place an SPI Click board on mikroBUS™ 2, enable ``&mikrobus_2_spi`` and
+  add the device below it in an app overlay.
+* To place a UART Click board on mikroBUS™ 1, enable ``&mikrobus_1_serial`` in
+  an app overlay.
+* Upstream shields target mikroBUS™ 1 by default through
+  ``&mikrobus_spi``, ``&mikrobus_i2c``, ``&mikrobus_serial``, and
+  ``&mikrobus_header``.
+
+Connections and IOs
+===================
+
+On-board peripherals
+--------------------
+
+* System LED data = ``P0.18`` via ``spi1`` MOSI
+* Buzzer PWM = ``P0.19``
+* Debug UART TX = ``P0.27``
+* Debug UART RX = ``P0.26``
+
+mikroBUS™ 1
+----------
+
+* AN = ``P0.20``
+* RST = ``P0.16``
+* CS = ``P0.07``
+* SCK = ``P0.29``
+* MISO = ``P0.28``
+* MOSI = ``P0.21``
+* PWM = ``P0.17``
+* INT = ``P0.15``
+* RX = ``P0.13``
+* TX = ``P0.12``
+* SCL = ``P0.23``
+* SDA = ``P0.22``
+
+mikroBUS™ 2
+----------
+
+* AN = ``P0.14``
+* RST = ``P0.02``
+* CS = ``P0.00``
+* SCK = ``P0.06``
+* MISO = ``P0.05``
+* MOSI = ``P0.04``
+* PWM = ``P0.03``
+* INT = ``P0.01``
+* RX = ``P0.11``
+* TX = ``P0.10``
+* SCL = ``P0.08``
+* SDA = ``P0.09``
+
+Programming and Debugging
+*************************
+
+Seven provides a TC2030 SWD/JTAG connector for programming and a UART VCOM
+interface for debug output.
+
+.. zephyr:board-supported-runners::
+
+References
+**********
+
+.. target-notes::
+
+.. _Seven hardware documentation:
+   https://github.com/id8-engineering/seven-hardware
+
+.. _nRF9151 website:
+   https://www.nordicsemi.com/Products/nRF9151
+
+.. _Nordic Semiconductor TechDocs:
+   https://docs.nordicsemi.com/
+
+.. _Trusted Firmware M:
+   https://www.trustedfirmware.org/projects/tf-m/
+
+.. _mikroBUS standard:
+   https://www.mikroe.com/mikrobus

boards/id8/seven_nrf9151/pre_dt_board.cmake

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+# Copyright (c) 2021 Linaro Limited
+# SPDX-License-Identifier: Apache-2.0
+
+# Suppress "unique_unit_address_if_enabled" to handle the following overlaps:
+# - flash-controller@39000 & kmu@39000
+# - power@5000 & clock@5000
+list(APPEND EXTRA_DTC_FLAGS "-Wno-unique_unit_address_if_enabled")

boards/id8/seven_nrf9151/seven_nrf9151.dts

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+/*
+ * Copyright (c) 2026 ID8 Engineering AB
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/dts-v1/;
+#include <nordic/nrf9151_laca.dtsi>
+#include "seven_nrf9151_common.dtsi"
+
+/ {
+	model = "Seven nRF9151";
+	compatible = "id8,seven-nrf9151";
+
+	chosen {
+		zephyr,sram = &sram0_s;
+		zephyr,flash = &flash0;
+		zephyr,code-partition = &slot0_partition;
+		zephyr,sram-secure-partition = &sram0_s;
+		zephyr,sram-non-secure-partition = &sram0_ns;
+	};
+};

boards/id8/seven_nrf9151/seven_nrf9151.yaml

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+identifier: seven/nrf9151
+name: seven_nrf9151
+type: mcu
+arch: arm
+toolchain:
+  - gnuarmemb
+  - zephyr
+ram: 88
+flash: 1024
+supported:
+  - gpio
+  - i2c
+  - pwm
+  - uart
+  - spi
+  - watchdog
+  - counter
+  - adc
+vendor: id8