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