am243x_evm/am2434: initial support

boards/phytec/phyboard_electra/phyboard_electra_am6442_m4.dts

@@ -7,6 +7,8 @@
 
 /dts-v1/;
 
+#include <zephyr/dt-bindings/pinctrl/ti-k3-pinctrl.h>
+#include <zephyr/dt-bindings/gpio/gpio.h>
 #include <ti/am64x_m4.dtsi>
 
 / {
@@ -15,8 +17,8 @@
 
 	chosen {
 		zephyr,sram = &sram0;
-		zephyr,console = &uart0;
-		zephyr,shell-uart = &uart0;
+		zephyr,console = &mcu_uart0;
+		zephyr,shell-uart = &mcu_uart0;
 		zephyr,ipc_shm = &ddr0;
 		zephyr,sram1 = &ddr1;
 	};
@@ -52,13 +54,15 @@
 	leds: leds {
 		compatible = "gpio-leds";
 		heartbeat_led: led_0 {
-			gpios = <&gpio0 6 GPIO_ACTIVE_HIGH>;
+			gpios = <&mcu_gpio0 6 GPIO_ACTIVE_HIGH>;
 			label = "Heartbeat LED";
 		};
 	};
 };
 
-&pinctrl {
+&mcu_pinctrl {
+	status = "okay";
+
 	mcu_uart0_rx_default: mcu_uart0_rx_default {
 		pinmux = <K3_PINMUX(0x028, PIN_INPUT, MUX_MODE_0)>;
 	};
@@ -70,14 +74,14 @@
 	};
 };
 
-&uart0 {
+&mcu_uart0 {
 	current-speed = <115200>;
 	pinctrl-0 = <&mcu_uart0_rx_default &mcu_uart0_tx_default>;
 	pinctrl-names = "default";
 	status = "okay";
 };
 
-&gpio0 {
+&mcu_gpio0 {
 	pinctrl-0 = <&mcu_gpio0_led_default>;
 	pinctrl-names = "default";
 	status = "okay";

boards/ti/am243x_evm/Kconfig.am243x_evm

@@ -0,0 +1,9 @@
+# Texas Instruments Sitara AM243x EVM
+#
+# Copyright (c) 2025 Texas Instruments Incorporated
+#
+# SPDX-License-Identifier: Apache-2.0
+
+config BOARD_AM243X_EVM
+	select SOC_AM2434_M4 if BOARD_AM243X_EVM_AM2434_M4
+	select SOC_AM2434_R5F0_0 if BOARD_AM243X_EVM_AM2434_R5F0_0

boards/ti/am243x_evm/am243x_evm_am2434_m4-pinctrl.dtsi

@@ -0,0 +1,23 @@
+/*
+ * Copyright (c) 2025 Texas Instruments Incorporated
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <zephyr/dt-bindings/pinctrl/ti-k3-pinctrl.h>
+
+&mcu_pinctrl {
+	status = "okay";
+
+	mcu_uart0_rx: mcu_uart0_rx_default {
+		pinmux = <K3_PINMUX(0x028, PIN_INPUT, MUX_MODE_0)>;
+	};
+
+	mcu_uart0_tx: mcu_uart0_tx_default {
+		pinmux = <K3_PINMUX(0x02C, PIN_OUTPUT, MUX_MODE_0)>;
+	};
+
+	mcu_gpio0_led: mcu_gpio0_led_default {
+		pinmux = <K3_PINMUX(0x014, PIN_INPUT, MUX_MODE_7)>;
+	};
+};

boards/ti/am243x_evm/am243x_evm_am2434_m4.dts

@@ -0,0 +1,79 @@
+/*
+ * Copyright (c) 2025 Texas Instruments Incorporated
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/dts-v1/;
+
+#include <zephyr/dt-bindings/gpio/gpio.h>
+#include <ti/am64x_m4.dtsi>
+#include "am243x_evm_am2434_m4-pinctrl.dtsi"
+
+/ {
+	model = "TI AM243x EVM M4F core";
+	compatible = "ti,am243x-evm-m4";
+
+	chosen {
+		zephyr,sram = &sram0;
+		zephyr,console = &mcu_uart0;
+		zephyr,shell-uart = &mcu_uart0;
+		zephyr,ipc = &ipc0;
+		zephyr,ipc-shm = &ipc_shm0;
+	};
+
+	aliases {
+		led0 = &ld26;
+	};
+
+	cpus {
+		cpu@0 {
+			status = "okay";
+			clock-frequency = <DT_FREQ_M(400)>;
+		};
+	};
+
+	leds: leds {
+		compatible = "gpio-leds";
+
+		ld26: led_0 {
+			gpios = <&mcu_gpio0 5 GPIO_ACTIVE_HIGH>;
+		};
+	};
+
+	rsc_table: memory@a4100000 {
+		compatible = "zephyr,memory-region", "mmio-sram";
+		reg = <0xa4100000 DT_SIZE_K(4)>;
+		zephyr,memory-region = "RSC_TABLE";
+	};
+
+	ipc_shm0: memory@a5000000 {
+		compatible = "zephyr,memory-region", "mmio-sram";
+		reg = <0xa5000000 DT_SIZE_M(8)>;
+		zephyr,memory-region = "IPC_SHM";
+	};
+
+	ipc0: ipc {
+		compatible = "zephyr,mbox-ipm";
+		mboxes = <&mbox6 0>, <&mbox6 1>;
+		mbox-names = "tx", "rx";
+	};
+};
+
+&mcu_uart0 {
+	current-speed = <115200>;
+	pinctrl-0 = <&mcu_uart0_rx &mcu_uart0_tx>;
+	pinctrl-names = "default";
+	status = "okay";
+};
+
+&mcu_gpio0 {
+	pinctrl-0 = <&mcu_gpio0_led>;
+	pinctrl-names = "default";
+	status = "okay";
+};
+
+&mbox6 {
+	usr-id = <3>;
+	status = "okay";
+};

boards/ti/am243x_evm/am243x_evm_am2434_m4.yaml

@@ -0,0 +1,12 @@
+# Copyright (c) 2025 Texas Instruments Incorporated
+#
+# SPDX-License-Identifier: Apache-2.0
+
+identifier: am243x_evm/am2434/m4
+name: TI AM243x M4
+type: mcu
+arch: arm
+toolchain:
+  - zephyr
+ram: 192
+vendor: ti

boards/ti/am243x_evm/am243x_evm_am2434_m4_defconfig

@@ -0,0 +1,16 @@
+# Copyright (c) 2025 Texas Instruments Incorporated
+#
+# SPDX-License-Identifier: Apache-2.0
+
+# Platform Configuration
+CONFIG_CORTEX_M_SYSTICK=y
+
+# Zephyr Kernel Configuration
+CONFIG_XIP=n
+
+# Serial Driver
+CONFIG_SERIAL=y
+
+# Enable Console
+CONFIG_CONSOLE=y
+CONFIG_UART_CONSOLE=y

boards/ti/am243x_evm/am243x_evm_am2434_r5f0_0-pinctrl.dtsi

@@ -0,0 +1,35 @@
+/*
+ * Copyright (c) 2025 Texas Instruments Incorporated
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <zephyr/dt-bindings/pinctrl/ti-k3-pinctrl.h>
+
+&pinctrl {
+	status = "okay";
+
+	uart0_rx: uart0_rx_default {
+		pinmux = <K3_PINMUX(0x230, PIN_INPUT, MUX_MODE_0)>;
+	};
+
+	uart0_tx: uart0_tx_default {
+		pinmux = <K3_PINMUX(0x234, PIN_OUTPUT, MUX_MODE_0)>;
+	};
+
+	i2c0_scl: i2c0_scl_default {
+		pinmux = <K3_PINMUX(0x260, PIN_INPUT_PULLUP, MUX_MODE_0)>;
+	};
+
+	i2c0_sda: i2c0_sda_default {
+		pinmux = <K3_PINMUX(0x264, PIN_INPUT_PULLUP, MUX_MODE_0)>;
+	};
+};
+
+&mcu_pinctrl {
+	status = "okay";
+
+	mcu_gpio0_led: mcu_gpio0_led_default {
+		pinmux = <K3_PINMUX(0x14, PIN_INPUT, MUX_MODE_7)>;
+	};
+};