boards: renesas: Maintain the minimal support of board RSK+ RZ/T2M

Renesas takes over the maintainer of board RSK+ RZ/T2M to unify with
other RZ boards

- Rename rzt2m_starter_kit to rzt2m_rsk
- Support xSPI boot mode to boot code from flash
- Change to use HAL Renesas

Signed-off-by: Nhut Nguyen <[email protected]>
Signed-off-by: Binh Nguyen <[email protected]>

Author: nhutnguyenkc

boards/renesas/rzt2m_rsk/Kconfig.rzt2m_rsk

@@ -0,0 +1,6 @@
+# Copyright (c) 2023 Nordic Semiconductor ASA
+# Copyright (c) 2025 Renesas Electronics Corporation
+# SPDX-License-Identifier: Apache-2.0
+
+config BOARD_RZT2M_RSK
+	select SOC_R9A07G075M24GBG

boards/renesas/rzt2m_starterkit/board.cmake renamed to boards/renesas/rzt2m_rsk/board.cmake

@@ -0,0 +1,6 @@
+board:
+  name: rzt2m_rsk
+  full_name: Renesas Starter Kit+ for RZ/T2M
+  vendor: renesas
+  socs:
+  - name: r9a07g075m24gbg

boards/renesas/rzt2m_rsk/board.yml

@@ -0,0 +1,104 @@
+.. zephyr:board:: rzt2m_rsk
+
+Overview
+********
+
+The Renesas Starter Kit+ for RZ/T2M is an evaluation and development kit for the RZ/T2M MPU.
+The board is powered through a 5V input via a DC Power Jack or USB Type-C Connector.
+
+* On-board RZ/T2M MPU 320-pin (R9A07G075M24GBG)
+* Rich functional ICs such as Gigabit Ethernet PHY and Octal Flash are mounted,
+  functions of target MPU can be fully evaluated
+* Generic interface such as Pmod/Grove/QWIIC/mikroBUS
+* The pin header enables users to freely combine with the user's hardware system and evaluate RZ/T2M
+* Emulator circuit is mounted, can start program debugging by simply connecting USB cable
+  to PC (two USB cables are bundled: one for emulator, and the other for power supply)
+* On-board memory components:
+
+  * SDRAM (256MBit)
+  * NOR Flash (256MBit)
+  * Octa Flash (512MBit)
+  * HyperRAM (512Mbit)
+  * QSPI Serial Flash (512Mbit)
+  * I2C EEPROM (32Kbit)
+
+* Communication interfaces include:
+
+  * Debug interfaces (J-Link OB, MIPI-10, MIPI-20)
+  * Ethernet
+  * CAN
+  * USB
+  * RS485
+  * UART
+  * I2C
+  * SPI
+
+Hardware
+********
+
+The Renesas RZ/T2M MPU documentation can be found at `RZT2M Product page`_
+
+.. figure:: rzt2m_block_diagram.webp
+	:width: 500px
+	:align: center
+	:alt: RZ/T2M group feature
+
+Supported Features
+==================
+
+.. zephyr:board-supported-hw::
+
+Connections and IOs
+===================
+
+By default, the board is configured for use with:
+
+* UART0 connected to the USB serial port (pins K18, K19),
+* UART3 connected to the PMOD Header (J25, pins H16, G20),
+* LEDs defined as ``led0``, ``led1``, ``led2`` and ``led3``,
+
+The Zephyr console uses UART0.
+
+Programming and Debugging
+*************************
+
+Applications for the ``rzt2m_rsk`` board can be built in the usual way as
+documented in :ref:`build_an_application`.
+
+To use J-Link OB on RSK+RZT2M,
+
+1. Open the jumper pin (J9) for switching the debug connection.
+
+2. Connect the micro-USB type-B to J-Link OB USB connector (J10), and then the LED4 is lighted.
+
+Console
+=======
+
+The UART port is accessed by USB-Serial port (CN16).
+
+Debugging
+=========
+
+Here is an example for building and debugging with the :zephyr:code-sample:`hello_world` application.
+
+.. zephyr-app-commands::
+   :zephyr-app: samples/hello_world
+   :board: rzt2m_rsk/r9a07g075m24gbg/cr520
+   :goals: build debug
+
+Flashing
+=========
+
+Before using ``flash`` command, the board must be set to xSPI boot mode.
+
+.. zephyr-app-commands::
+   :zephyr-app: samples/hello_world
+   :board: rzt2m_rsk/r9a07g075m24gbg/cr520
+   :goals: build flash
+
+References
+**********
+
+.. target-notes::
+
+.. _RZT2M Product page: https://www.renesas.com/us/en/products/microcontrollers-microprocessors/rz-mpus/rzt2m-high-performance-multi-function-mpu-realizing-high-speed-processing-and-high-precision-control

boards/renesas/rzt2m_rsk/doc/index.rst

@@ -1,20 +1,23 @@
 /*
  * Copyright (c) 2023 Antmicro <www.antmicro.com>
+ * Copyright (c) 2025 Renesas Electronics Corporation
  *
  * SPDX-License-Identifier: Apache-2.0
  */
 
 /dts-v1/;
-#include <dt-bindings/pinctrl/renesas-rzt2m-pinctrl.h>
-#include <arm/renesas/rz/rzt2m.dtsi>
 #include <zephyr/dt-bindings/input/input-event-codes.h>
+#include <arm/renesas/rz/rzt/r9a07g075.dtsi>
+#include "rzt2m_rsk-pinctrl.dtsi"
 
 / {
-	model = "RZT/2M Starter Kit";
-	compatible = "renesas,rzt2m_starter_kit";
+	model = "Renesas Starter Kit+ for RZ/T2M";
+	compatible = "renesas,rzt2m-rsk";
 
 	chosen {
 		zephyr,sram = &cpu0_atcm;
+		zephyr,flash = &xspi0_cs0;
+		zephyr,code-partition = &slot0_partition;
 		zephyr,console = &uart0;
 		zephyr,shell-uart = &uart0;
 	};
@@ -26,18 +29,22 @@
 
 	leds {
 		compatible = "gpio-leds";
+
 		led0: led0 {
 			gpios = <&gpio19 6 0>;
 			label = "led0";
 		};
+
 		led1: led1 {
 			gpios = <&gpio19 4 0>;
 			label = "led1";
 		};
+
 		led2: led2 {
 			gpios = <&gpio20 0 0>;
 			label = "led2";
 		};
+
 		led3: led3 {
 			gpios = <&gpio23 4 0>;
 			label = "led3";
@@ -46,11 +53,13 @@
 
 	gpio_keys {
 		compatible = "gpio-keys";
+
 		sw1: sw1 {
 			label = "sw1";
 			gpios = <&gpio10 5 0>;
 			zephyr,code = <INPUT_KEY_0>;
 		};
+
 		sw2: sw2 {
 			label = "sw2";
 			gpios = <&gpio16 3 0>;
@@ -59,36 +68,41 @@
 	};
 };
 
+&sci0 {
+	pinctrl-0 = <&sci0_default>;
+	pinctrl-names = "default";
+	status = "okay";
 
-&pinctrl {
-	uart0_default: uart0_default {
-		group1 {
-			pinmux = <UART0TX_P16_5>;
-		};
-		group2 {
-			pinmux = <UART0RX_P16_6>;
-			input-enable;
-		};
-	};
-	uart3_default: uart3_default {
-		group1 {
-			pinmux = <UART3TX_P18_0>;
-		};
-		group2 {
-			pinmux = <UART3RX_P17_7>;
-			input-enable;
-		};
+	uart0: uart {
+		current-speed = <115200>;
+		status = "okay";
 	};
 };
 
-&uart0 {
-	status = "okay";
-	pinctrl-0 = <&uart0_default>;
+&irq2 {
+	trigger-type = "falling";
+	pinctrl-0 = <&irq2_default>;
 	pinctrl-names = "default";
+	status = "okay";
 };
 
-&uart3 {
+&gpio10 {
+	irqs = <5 2>;
+	status = "okay";
+};
+
+&gpio16 {
+	status = "okay";
+};
+
+&gpio19 {
+	status = "okay";
+};
+
+&gpio20 {
+	status = "okay";
+};
+
+&gpio23 {
 	status = "okay";
-	pinctrl-0 = <&uart3_default>;
-	pinctrl-names = "default";
 };

boards/renesas/rzt2m_rsk/doc/rzt2m_block_diagram.webp

@@ -1,15 +1,15 @@
 # Copyright (c) 2023 Antmicro <www.antmicro.com>
+# Copyright (c) 2025 Renesas Electronics Corporation
 # SPDX-License-Identifier: Apache-2.0
 
-identifier: rzt2m_starter_kit
-name: Renesas RZ/T2M Starter Kit+
+identifier: rzt2m_rsk/r9a07g075m24gbg/cr520
+name: Renesas Starter Kit+ for RZ/T2M
 type: mcu
 arch: arm
 ram: 2048
 toolchain:
   - zephyr
 supported:
-  - counter
   - uart
   - gpio
 vendor: renesas

boards/renesas/rzt2m_rsk/doc/rzt2m_rsk.webp

@@ -1,7 +1,13 @@
 # Copyright (c) 2023 Antmicro <www.antmicro.com>
+# Copyright (c) 2025 Renesas Electronics Corporation
 # SPDX-License-Identifier: Apache-2.0
 
+CONFIG_XIP=n
+
+# Enable UART driver
 CONFIG_SERIAL=y
-CONFIG_CONSOLE=y
 CONFIG_UART_CONSOLE=y
 CONFIG_UART_INTERRUPT_DRIVEN=y
+
+# Enable console
+CONFIG_CONSOLE=y