/*
 * Copyright 2022 NXP
 * SPDX-License-Identifier: Apache-2.0
 */

#include <zephyr/dt-bindings/adc/mcux-lpadc.h>

/* RT685 ADC only supports up to 1.8V,
 * so limit regulator voltage to this range.
 * Only test regulators we can safely change voltage to in RUN mode
 */
 &ldo1 {
	regulator-max-microvolt = <1800000>;
 };

 &ldo2 {
	regulator-max-microvolt = <1800000>;
 };

/* Override LPADC0 pinctrl settings */
&pinmux_lpadc0 {
	group0 {
		pinmux = <ADC0_CH0_PIO0_5>,
			<ADC0_CH2_PIO0_19>;
		slew-rate = "normal";
		drive-strength = "normal";
		nxp,analog-mode;
	};
};

/ {
	/* Note: make the following connections to run test on an RT685:
	 * J30.1-> TP15
	 * J30.3-> TP17
	 */
	resources: resources {
		compatible = "test-regulator-voltage";
		/* Note: LDO2 voltage range needs to be tested first
		 * to pass this test. It seems that when LDO2 is at the
		 * default voltage of 3.3V, LDO1 will not always deliver
		 * a voltage within given tolerance
		 */
		regulators = <&ldo2 &ldo1>;
		io-channels = <&lpadc0 0>, <&lpadc0 1>;
		tolerance-microvolt = <35000>, <35000>;
		set-read-delay-ms = <20>;
		adc-avg-count = <10>;
	};
};

&lpadc0 {
	#address-cells = <1>;
	#size-cells = <0>;

	channel@0 {
		reg = <0>;
		zephyr,gain = "ADC_GAIN_1";
		zephyr,reference = "ADC_REF_EXTERNAL0";
		zephyr,vref-mv = <1800>;
		zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>;
		zephyr,resolution = <12>;
		zephyr,input-positive = <MCUX_LPADC_CH0A>;
	};

	channel@1 {
		reg = <1>;
		zephyr,gain = "ADC_GAIN_1";
		zephyr,reference = "ADC_REF_EXTERNAL0";
		zephyr,vref-mv = <1800>;
		zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>;
		zephyr,resolution = <12>;
		zephyr,input-positive = <MCUX_LPADC_CH2A>;
	};
};