# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) %YAML 1.2 --- $id: http://devicetree.org/schemas/iio/dac/dpot-dac.yaml# $schema: http://devicetree.org/meta-schemas/core.yaml# title: DAC emulation using a digital potentiometer maintainers: - Peter Rosin description: | It is assumed that the dpot is used as a voltage divider between the current dpot wiper setting and the maximum resistance of the dpot. The divided voltage is provided by a vref regulator. .------. .-----------. | | | vref |--' .---. | regulator |--. | | '-----------' | | d | | | p | | | o | wiper | | t |<---------+ | | | | '---' dac output voltage | | '------+------------+ properties: compatible: const: dpot-dac vref-supply: description: Regulator supplying the voltage divider. io-channels: maxItems: 1 description: | Channel node of the dpot to be used for the voltage division. io-channel-names: const: dpot "#io-channel-cells": const: 1 required: - compatible - vref-supply - io-channels - io-channel-names additionalProperties: false examples: - | dac { compatible = "dpot-dac"; vref-supply = <®_3v3>; io-channels = <&dpot 0>; io-channel-names = "dpot"; }; ...