Add mcxa344 lpi2c lpspi and wwdt support

boards/nxp/frdm_mcxa344/board.c

@@ -119,6 +119,26 @@ void board_early_init_hook(void)
 	CLOCK_EnableClock(kCLOCK_GateGPIO4);
 #endif
 
+#if DT_NODE_HAS_STATUS_OKAY(DT_NODELABEL(lpi2c0))
+	CLOCK_SetClockDiv(kCLOCK_DivLPI2C0, 1u);
+	CLOCK_AttachClk(kFRO_LF_DIV_to_LPI2C0);
+#endif
+
+#if DT_NODE_HAS_STATUS_OKAY(DT_NODELABEL(lpi2c1))
+	CLOCK_SetClockDiv(kCLOCK_DivLPI2C1, 1u);
+	CLOCK_AttachClk(kFRO_LF_DIV_to_LPI2C1);
+#endif
+
+#if DT_NODE_HAS_STATUS_OKAY(DT_NODELABEL(lpspi0))
+	CLOCK_SetClockDiv(kCLOCK_DivLPSPI0, 1u);
+	CLOCK_AttachClk(kFRO_LF_DIV_to_LPSPI0);
+#endif
+
+#if DT_NODE_HAS_STATUS_OKAY(DT_NODELABEL(lpspi1))
+	CLOCK_SetClockDiv(kCLOCK_DivLPSPI1, 1u);
+	CLOCK_AttachClk(kFRO_LF_DIV_to_LPSPI1);
+#endif
+
 #if DT_NODE_HAS_STATUS_OKAY(DT_NODELABEL(lpuart0))
 	CLOCK_SetClockDiv(kCLOCK_DivLPUART0, 1u);
 	CLOCK_AttachClk(kFRO_LF_DIV_to_LPUART0);
@@ -143,6 +163,10 @@ void board_early_init_hook(void)
 	RESET_ReleasePeripheralReset(kLPUART3_RST_SHIFT_RSTn);
 #endif
 
+#if DT_NODE_HAS_STATUS_OKAY(DT_NODELABEL(wwdt0))
+	CLOCK_SetClockDiv(kCLOCK_DivWWDT0, 1u);
+#endif
+
 	/* Set SystemCoreClock variable. */
 	SystemCoreClock = CLOCK_INIT_CORE_CLOCK;
 }

boards/nxp/frdm_mcxa344/frdm_mcxa344-pinctrl.dtsi

@@ -3,14 +3,49 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
-
 #include <nxp/mcx/MCXA344VLL-pinctrl.h>
 
 &pinctrl {
+	pinmux_lpi2c0: pinmux_lpi2c0 {
+		group0 {
+			pinmux = <LPI2C0_SDA_P1_8>,
+				 <LPI2C0_SCL_P1_9>;
+			slew-rate = "fast";
+			drive-strength = "low";
+			input-enable;
+			bias-pull-up;
+			drive-open-drain;
+		};
+	};
+
+	pinmux_lpi2c1: pinmux_lpi2c1 {
+		group0 {
+			pinmux = <LPI2C1_SDA_P3_28>,
+				 <LPI2C1_SCL_P3_27>;
+			slew-rate = "fast";
+			drive-strength = "low";
+			input-enable;
+			bias-pull-up;
+			drive-open-drain;
+		};
+	};
+
+	pinmux_lpspi0: pinmux_lpspi0 {
+		group0 {
+			pinmux = <LPSPI0_SDO_P1_0>,
+				 <LPSPI0_SCK_P1_1>,
+				 <LPSPI0_SDI_P1_2>,
+				 <LPSPI0_PCS0_P1_3>;
+			slew-rate = "fast";
+			drive-strength = "low";
+			input-enable;
+		};
+	};
+
 	pinmux_lpuart2: pinmux_lpuart2 {
 		group0 {
 			pinmux = <LPUART2_RXD_P2_3>,
-				<LPUART2_TXD_P2_2>;
+				 <LPUART2_TXD_P2_2>;
 			drive-strength = "low";
 			slew-rate = "fast";
 			input-enable;

boards/nxp/frdm_mcxa344/frdm_mcxa344.dts

@@ -15,12 +15,13 @@
 	model = "NXP FRDM_MCXA344 board";
 	compatible = "nxp,mcxa344", "nxp,mcx";
 
-	aliases{
+	aliases {
 		led0 = &red_led;
 		led1 = &green_led;
 		led2 = &blue_led;
 		sw0 = &user_button_2;
 		sw1 = &user_button_3;
+		watchdog0 = &wwdt0;
 	};
 
 	chosen {
@@ -105,33 +106,6 @@
 	status = "okay";
 };
 
-&gpio0 {
-	status = "okay";
-};
-
-&gpio1 {
-	status = "okay";
-};
-
-&gpio2 {
-	status = "okay";
-};
-
-&gpio3 {
-	status = "okay";
-};
-
-&gpio4 {
-	status = "okay";
-};
-
-&lpuart2 {
-	status = "okay";
-	current-speed = <115200>;
-	pinctrl-0 = <&pinmux_lpuart2>;
-	pinctrl-names = "default";
-};
-
 &flash {
 	partitions {
 		compatible = "fixed-partitions";
@@ -160,3 +134,52 @@
 		};
 	};
 };
+
+&gpio0 {
+	status = "okay";
+};
+
+&gpio1 {
+	status = "okay";
+};
+
+&gpio2 {
+	status = "okay";
+};
+
+&gpio3 {
+	status = "okay";
+};
+
+&gpio4 {
+	status = "okay";
+};
+
+&lpi2c0 {
+	status = "okay";
+	pinctrl-0 = <&pinmux_lpi2c0>;
+	pinctrl-names = "default";
+};
+
+&lpi2c1 {
+	status = "okay";
+	pinctrl-0 = <&pinmux_lpi2c1>;
+	pinctrl-names = "default";
+};
+
+&lpspi0 {
+	status = "okay";
+	pinctrl-0 = <&pinmux_lpspi0>;
+	pinctrl-names = "default";
+};
+
+&lpuart2 {
+	status = "okay";
+	current-speed = <115200>;
+	pinctrl-0 = <&pinmux_lpuart2>;
+	pinctrl-names = "default";
+};
+
+&wwdt0 {
+	status = "okay";
+};

boards/nxp/frdm_mcxa344/frdm_mcxa344.yaml

@@ -17,5 +17,8 @@ supported:
   - arduino_gpio
   - flash
   - gpio
+  - i2c
+  - spi
   - uart
+  - watchdog
 vendor: nxp

tests/drivers/i2c/i2c_target_api/boards/frdm_mcxa344.overlay

@@ -0,0 +1,26 @@
+/*
+ * Copyright 2025 NXP
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/* To test this sample, connect
+ * LPI2C0 SCL(J2-20)  -->  LPI2C1 SCL(J5-5)
+ * LPI2C0 SDA(J2-18)  -->  LPI2C1 SDA(J5-6)
+ */
+
+&lpi2c0 {
+	eeprom0: eeprom@54 {
+		compatible = "zephyr,i2c-target-eeprom";
+		reg = <0x54>;
+		size = <256>;
+	};
+};
+
+&lpi2c1 {
+	eeprom1: eeprom@56 {
+		compatible = "zephyr,i2c-target-eeprom";
+		reg = <0x56>;
+		size = <256>;
+	};
+};

tests/drivers/i2c/i2c_target_api/testcase.yaml

@@ -57,6 +57,7 @@ tests:
       - frdm_mcxa346
       - frdm_mcxa266
       - frdm_mcxa366
+      - frdm_mcxa344
       - max32655evkit/max32655/m4
       - max32662evkit
       - max32666evkit/max32666/cpu0

tests/drivers/spi/spi_loopback/boards/frdm_mcxa344.overlay

@@ -0,0 +1,22 @@
+/*
+ * Copyright 2025 NXP
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/* To test this sample, connect
+ * LPSPI0 MOSI(J6-6, P1_0/LPSPI0_SDO)     -->        LPSPI0 MISO(J6-5, P1_2/LPSPI0_SDI)
+ */
+&lpspi0 {
+	slow@0 {
+		compatible = "test-spi-loopback-slow";
+		reg = <0>;
+		spi-max-frequency = <500000>;
+	};
+
+	fast@0 {
+		compatible = "test-spi-loopback-fast";
+		reg = <0>;
+		spi-max-frequency = <16000000>;
+	};
+};