boards: nxp: frdm_mcxa153: Support adc for NXP frdm_mcxa153 board

Support adc for NXP frdm_mcxa153 board.

Signed-off-by: Neil Chen <[email protected]>

Author: NeilChen93

boards/nxp/frdm_mcxa153/board.c

@@ -90,6 +90,13 @@ void board_early_init_hook(void)
 	CLOCK_EnableClock(kCLOCK_GateGPIO3);
 #endif
 
+#if DT_NODE_HAS_STATUS_OKAY(DT_NODELABEL(lpadc0))
+	CLOCK_SetClockDiv(kCLOCK_DivADC0, 1u);
+	CLOCK_AttachClk(kFRO12M_to_ADC0);
+
+	CLOCK_EnableClock(kCLOCK_GateADC0);
+#endif
+
 #if DT_NODE_HAS_STATUS_OKAY(DT_NODELABEL(lpuart0))
 	CLOCK_SetClockDiv(kCLOCK_DivLPUART0, 1u);
 	CLOCK_AttachClk(kFRO12M_to_LPUART0);

boards/nxp/frdm_mcxa153/frdm_mcxa153-pinctrl.dtsi

@@ -16,6 +16,15 @@
 		};
 	};
 
+	pinmux_lpadc0: pinmux_lpadc0 {
+		group0 {
+			pinmux = <ADC0_A0_P2_0>,
+				<ADC0_A1_P2_1>;
+			slew-rate = "fast";
+			drive-strength = "low";
+		};
+	};
+
 	pinmux_lpuart0: pinmux_lpuart0 {
 		group0 {
 			pinmux = <LPUART0_RXD_P0_2>,

boards/nxp/frdm_mcxa153/frdm_mcxa153.dts

@@ -116,6 +116,12 @@
 	status = "okay";
 };
 
+&lpadc0 {
+	status = "okay";
+	pinctrl-0 = <&pinmux_lpadc0>;
+	pinctrl-names = "default";
+};
+
 &lpuart0 {
 	status = "okay";
 	current-speed = <115200>;

boards/nxp/frdm_mcxa153/frdm_mcxa153.yaml

@@ -14,6 +14,7 @@ toolchain:
   - zephyr
   - gnuarmemb
 supported:
+  - adc
   - dma
   - flash
   - gpio

boards/nxp/frdm_mcxa153/frdm_mcxa153_defconfig

@@ -9,3 +9,4 @@ CONFIG_UART_CONSOLE=y
 CONFIG_SERIAL=y
 CONFIG_UART_INTERRUPT_DRIVEN=y
 CONFIG_GPIO=y
+CONFIG_LPADC_DO_OFFSET_CALIBRATION=y