tests/drivers/dac/dac_loopback/boards/lpcxpresso55s36.overlay - third_party/github/zephyrproject-rtos/zephyr - Git at Google

 /*
  * Copyright 2023 NXP
  *
  * SPDX-License-Identifier: Apache-2.0
  */

 &dac0 {
     /* To align reference voltage with ADC. */
     voltage-reference = <1>;
 };
	/*
	* Copyright 2023 NXP
	*
	* SPDX-License-Identifier: Apache-2.0
	*/

	&dac0 {
	/* To align reference voltage with ADC. */
	voltage-reference = <1>;
	};