79 lines
1.7 KiB
YAML
79 lines
1.7 KiB
YAML
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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/iio/potentiometer/renesas,x9250.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Renesas X9250 quad potentiometers
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maintainers:
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- Herve Codina <herve.codina@bootlin.com>
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description:
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The Renesas X9250 integrates four digitally controlled potentiometers.
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On each potentiometer, the X9250T has a 100 kOhms total resistance and the
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X9250U has a 50 kOhms total resistance.
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allOf:
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- $ref: /schemas/spi/spi-peripheral-props.yaml
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properties:
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compatible:
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enum:
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- renesas,x9250t
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- renesas,x9250u
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reg:
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maxItems: 1
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vcc-supply:
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description:
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Regulator for the VCC power supply.
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avp-supply:
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description:
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Regulator for the analog V+ power supply.
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avn-supply:
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description:
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Regulator for the analog V- power supply.
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'#io-channel-cells':
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const: 1
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spi-max-frequency:
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maximum: 2000000
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wp-gpios:
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maxItems: 1
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description:
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GPIO connected to the write-protect pin.
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required:
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- compatible
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- reg
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- vcc-supply
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- avp-supply
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- avn-supply
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- '#io-channel-cells'
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unevaluatedProperties: false
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examples:
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- |
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#include <dt-bindings/gpio/gpio.h>
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spi {
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#address-cells = <1>;
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#size-cells = <0>;
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potentiometer@0 {
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compatible = "renesas,x9250t";
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reg = <0>;
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vcc-supply = <&vcc_regulator>;
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avp-supply = <&avp_regulator>;
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avn-supply = <&avp_regulator>;
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wp-gpios = <&gpio 1 GPIO_ACTIVE_LOW>;
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spi-max-frequency = <2000000>;
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#io-channel-cells = <1>;
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};
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};
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