boards: nxp: frdm_k32l2b3: Add initial support

Adding initial support for NXP FRDM K32L2B3 board.

Signed-off-by: Ishraq Ibne Ashraf <ishraq.i.ashraf@gmail.com>

dts: arm: nxp: Fix SRAM node name

Fix address part of the SRAM node name.
Change the SRAM start address definition to lower
case hexadecimal to be consistent.

Signed-off-by: Ishraq Ibne Ashraf <ishraq.i.ashraf@gmail.com>

boards/nxp/frdm_k32l2b3/Kconfig.frdm_k32l2b3

@@ -0,0 +1,9 @@
+#
+# Copyright (c) 2025 Ishraq Ibne Ashraf <ishraq.i.ashraf@gmail.com>
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+config BOARD_FRDM_K32L2B3
+	select SOC_K32L2B31A
+	select SOC_PART_NUMBER_K32L2B31VLH0A

boards/nxp/frdm_k32l2b3/board.cmake

@@ -0,0 +1,11 @@
+#
+# Copyright (c) 2025 Ishraq Ibne Ashraf <ishraq.i.ashraf@gmail.com>
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+board_runner_args(linkserver "--device=K32L2B31A:FRDM-K32L2B")
+board_runner_args(pyocd "--target=k32l2b3")
+
+include(${ZEPHYR_BASE}/boards/common/linkserver.board.cmake)
+include(${ZEPHYR_BASE}/boards/common/pyocd.board.cmake)

boards/nxp/frdm_k32l2b3/board.yml

@@ -0,0 +1,6 @@
+board:
+  name: frdm_k32l2b3
+  full_name: FRDM-K32L2B3
+  vendor: nxp
+  socs:
+    - name: k32l2b31a

boards/nxp/frdm_k32l2b3/doc/index.rst

@@ -0,0 +1,178 @@
+.. zephyr:board:: frdm_k32l2b3
+
+Overview
+********
+
+The FRDM-K32L2B3 FRDM development board provides a platform for evaluation and
+development of the K32 L2B SoC Family. The board provides easy Access to K32 L2B
+SoC I/O.
+
+Hardware
+********
+
+- K32L2B31VLH0A SoC running at up to 48 MHz, 256 kB flash memory, 32 kB SRAM memory.
+- Full-speed USB port with micro A/B connector for device functionality.
+- NXP FXOS8700CQ digital sensor, 3D accelerometer (±2g/±4g/±8g) + 3D magnetometer.
+- On-board segment LCD.
+- Form factor compatible with Arduino® Rev3 pin layout.
+- OpenSDA debug interface.
+
+For more information about the K32L2B31VLH0A SoC and FRDM-K32L2B3 board:
+
+- `FRDM-KL32L2B3 Website`_
+- `KL32-L2 Website`_
+
+Supported Features
+==================
+
+.. zephyr:board-supported-hw::
+
+Connections and IOs
+===================
+
+The K32L2B31VLH0A SoC has five pairs of pinmux/gpio controllers, and all are currently
+enabled (PORTA/GPIOA, PORTB/GPIOB, PORTC/GPIOC, PORTD/GPIOD, and PORTE/GPIOE) for the
+FRDM-K32L2B3 board.
+
++-------+-------------+---------------------------+
+| Name  | Function    | Usage                     |
++=======+=============+===========================+
+| PTD5  | GPIO        | Green LED                 |
++-------+-------------+---------------------------+
+| PTE31 | GPIO        | Red LED                   |
++-------+-------------+---------------------------+
+| PTA4  | GPIO        | User Button 1 (SW1)       |
++-------+-------------+---------------------------+
+| PTC3  | GPIO        | User Button 2 (SW2)       |
++-------+-------------+---------------------------+
+| PTA1  | LPUART0_RX  | UART Console              |
++-------+-------------+---------------------------+
+| PTA2  | LPUART0_TX  | UART Console              |
++-------+-------------+---------------------------+
+| PTE24 | I2C0_SCL    | I2C Accelerometer         |
++-------+-------------+---------------------------+
+| PTE25 | I2C0_SDA    | I2C Accelerometer         |
++-------+-------------+---------------------------+
+
+System Clock
+============
+
+The K32L2B31VLH0A SoC is configured to use the 32.768 kHz external
+oscillator on the board to generate a 48 MHz system clock.
+
+Serial Port
+===========
+
+The K32L2B31VLH0A LPUART0 is used for the console.
+
+Programming and Debugging
+*************************
+
+.. zephyr:board-supported-runners::
+
+Build and flash applications as usual (see :ref:`build_an_application` and
+:ref:`application_run` for more details).
+
+Configuring a Debug Probe
+=========================
+
+A debug probe is used for both flashing and debugging the board. This board is
+configured by default to use the :ref:`opensda-daplink-onboard-debug-probe`.
+
+For more information about OpenSDA and firmware applications check `OpenSDA FRDM-K32L2B3`_.
+
+Using LinkServer
+----------------
+
+Install the :ref:`linkserver-debug-host-tools` and make sure they are in your
+search path. LinkServer works with the CMSIS-DAP firmware. Please follow the
+instructions on :ref:`opensda-daplink-onboard-debug-probe` and select the latest
+revision of the firmware image.
+
+LinkServer is the default for this board, ``west flash`` and ``west debug`` will
+call the linkserver runner.
+
+.. code-block:: console
+
+   west flash
+   west debug
+
+Using pyOCD
+-----------
+
+Install the :ref:`pyocd-debug-host-tools` and make sure they are in your search
+path. pyOCD works with the CMSIS-DAP firmware.
+
+Add the arguments ``-DBOARD_FLASH_RUNNER=pyocd`` and
+``-DBOARD_DEBUG_RUNNER=pyocd`` when you invoke ``west build`` to override the
+default runner from linkserver to pyocd:
+
+.. zephyr-app-commands::
+   :zephyr-app: samples/hello_world
+   :board: frdm_k32l2b3
+   :gen-args: -DBOARD_FLASH_RUNNER=pyocd -DBOARD_DEBUG_RUNNER=pyocd
+   :goals: build
+
+Configuring a Console
+=====================
+
+Regardless of your choice in debug probe, we will use the OpenSDA
+microcontroller as a usb-to-serial adapter for the serial console.
+
+Connect a USB cable from your PC to J13.
+
+Use the following settings with your serial terminal of choice
+(minicom, putty, etc.):
+
+- Speed: 115200
+- Data: 8 bits
+- Parity: None
+- Stop bits: 1
+
+Flashing
+========
+
+Here is an example for the :zephyr:code-sample:`hello_world` application.
+
+.. zephyr-app-commands::
+   :zephyr-app: samples/hello_world
+   :board: frdm_k32l2b3
+   :goals: flash
+
+Open a serial terminal, reset the board (press the SW2 button), and you should
+see the following message in the terminal:
+
+.. code-block:: console
+
+   *** Booting Zephyr OS build v4.1.0-7032-g3198db1b1229 ***
+   Hello World! frdm_k32l2b3/k32l2b31a
+
+Debugging
+=========
+
+Here is an example for the :zephyr:code-sample:`hello_world` application.
+
+.. zephyr-app-commands::
+   :zephyr-app: samples/hello_world
+   :board: frdm_k32l2b3
+   :goals: debug
+
+Open a serial terminal, step through the application in your debugger, and you
+should see the following message in the terminal:
+
+.. code-block:: console
+
+   *** Booting Zephyr OS build v4.1.0-7032-g3198db1b1229 ***
+   Hello World! frdm_k32l2b3/k32l2b31a
+
+.. include:: ../../common/board-footer.rst
+   :start-after: nxp-board-footer
+
+.. _KL32-L2 Website:
+   https://www.nxp.com/products/K32-L2
+
+.. _FRDM-KL32L2B3 Website:
+   https://www.nxp.com/design/design-center/development-boards-and-designs/general-purpose-mcus/nxp-frdm-development-platform-for-k32-l2b-mcus:FRDM-K32L2B3
+
+.. _OpenSDA FRDM-K32L2B3:
+   https://www.nxp.com/design/design-center/development-boards-and-designs/OPENSDA#FRDM-K32L2B3

boards/nxp/frdm_k32l2b3/frdm_k32l2b3-pinctrl.dtsi

@@ -0,0 +1,30 @@
+/*
+ * Copyright (c) 2025 Ishraq Ibne Ashraf <ishraq.i.ashraf@gmail.com>
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <nxp/kinetis/K32L2B31VLH0A-pinctrl.h>
+
+&pinctrl {
+	lpuart0_default: lpuart0_default {
+		group0 {
+			pinmux =
+				<LPUART0_RX_PTA1>,
+				<LPUART0_TX_PTA2>;
+			slew-rate = "slow";
+			drive-strength = "low";
+		};
+	};
+
+	i2c0_default: i2c0_default {
+		group0 {
+			pinmux =
+				<I2C0_SCL_PTE24>,
+				<I2C0_SDA_PTE25>;
+			bias-pull-up;
+			slew-rate = "fast";
+			drive-strength = "low";
+		};
+	};
+};

boards/nxp/frdm_k32l2b3/frdm_k32l2b3.dts

@@ -0,0 +1,121 @@
+/*
+ * Copyright (c) 2025 Ishraq Ibne Ashraf <ishraq.i.ashraf@gmail.com>
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/dts-v1/;
+
+#include <nxp/nxp_k32l2b3.dtsi>
+#include <zephyr/dt-bindings/input/input-event-codes.h>
+
+#include "frdm_k32l2b3-pinctrl.dtsi"
+
+/ {
+	model = "NXP FRDM-K32L2B3 board";
+	compatible = "nxp,k32l2b3", "nxp,k32lx";
+
+	aliases {
+		led0 = &led_green;
+		led1 = &led_red;
+		sw0 = &sw_1;
+		sw1 = &sw_3;
+		magn0 = &fxos8700;
+		accel0 = &fxos8700;
+	};
+
+	chosen {
+		zephyr,sram = &sram0;
+		zephyr,flash = &flash0;
+		zephyr,console = &lpuart0;
+		zephyr,shell-uart = &lpuart0;
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		led_green: led_1 {
+			label = "Green LED";
+			gpios = <&gpiod 5 GPIO_ACTIVE_LOW>;
+		};
+
+		led_red: led_2 {
+			label = "Red LED";
+			gpios = <&gpioe 31 GPIO_ACTIVE_LOW>;
+		};
+	};
+
+	gpio_keys {
+		compatible = "gpio-keys";
+
+		sw_1: button_1 {
+			label = "User Button 1 (SW1)";
+			zephyr,code = <INPUT_KEY_0>;
+			gpios = <&gpioa 4 GPIO_ACTIVE_LOW>;
+		};
+
+		sw_3: button_2 {
+			label = "User Button 2 (SW3)";
+			zephyr,code = <INPUT_KEY_1>;
+			gpios = <&gpioc 3 GPIO_ACTIVE_LOW>;
+		};
+	};
+};
+
+&cpu0 {
+	clock-frequency = <48000000>;
+};
+
+&sim {
+	er32k-select = <KINETIS_SIM_ER32KSEL_OSC32KCLK>;
+	pllfll-select = <KINETIS_SIM_PLLFLLSEL_MCGPLLCLK>;
+};
+
+&osc {
+	mode = "low-power";
+	clock-frequency = <32768>;
+};
+
+&ftfa {
+	status = "okay";
+};
+
+&gpioa {
+	status = "okay";
+};
+
+&gpiob {
+	status = "okay";
+};
+
+&gpioc {
+	status = "okay";
+};
+
+&gpiod {
+	status = "okay";
+};
+
+&gpioe {
+	status = "okay";
+};
+
+&lpuart0 {
+	status = "okay";
+	current-speed = <115200>;
+	pinctrl-0 = <&lpuart0_default>;
+	pinctrl-names = "default";
+};
+
+&i2c0 {
+	status = "okay";
+	pinctrl-0 = <&i2c0_default>;
+	pinctrl-names = "default";
+
+	fxos8700: fxos8700@1c {
+		compatible = "nxp,fxos8700";
+		reg = <0x1c>;
+		int1-gpios = <&gpiod 1 GPIO_ACTIVE_LOW>;
+		reset-gpios = <&gpioe 1 GPIO_ACTIVE_HIGH>;
+	};
+};

boards/nxp/frdm_k32l2b3/frdm_k32l2b3.yaml

@@ -0,0 +1,25 @@
+#
+# Copyright (c) 2025 Ishraq Ibne Ashraf <ishraq.i.ashraf@gmail.com>
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+identifier: frdm_k32l2b3
+name: NXP FRDM-K32L2B3
+type: mcu
+arch: arm
+ram: 32
+flash: 256
+toolchain:
+  - zephyr
+  - gnuarmemb
+supported:
+  - led
+  - i2c
+  - gpio
+  - sram
+  - flash
+  - lpuart
+  - button
+  - pinctrl
+vendor: nxp

boards/nxp/frdm_k32l2b3/frdm_k32l2b3_defconfig

@@ -0,0 +1,10 @@
+#
+# Copyright (c) 2025 Ishraq Ibne Ashraf <ishraq.i.ashraf@gmail.com>
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+CONFIG_GPIO=y
+CONFIG_SERIAL=y
+CONFIG_CONSOLE=y
+CONFIG_UART_CONSOLE=y

dts/arm/nxp/nxp_k32l2b3.dtsi

@@ -29,7 +29,7 @@
 		};
 	};
 
-	sram0: memory@1FFFF000 {
+	sram0: memory@1fffe000 {
 		compatible = "mmio-sram";
 	};
 
@@ -329,7 +329,7 @@
 };
 
 &sram0 {
-	reg = <0x1FFFE000 DT_SIZE_K(32)>;
+	reg = <0x1fffe000 DT_SIZE_K(32)>;
 };
 
 &flash0 {