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# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/iio/adc/rohm,bd79104.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: ROHM Semiconductor BD79104 ADC
maintainers:
- Matti Vaittinen <mazziesaccount@gmail.com>
description: |
12 bit SPI ADC with 8 channels.
properties:
compatible:
const: rohm,bd79104
reg:
maxItems: 1
vdd-supply: true
iovdd-supply: true
# The component data-sheet says the frequency is 20M. I, however, found
# that the ROHM evaluation board BD79104FV-EVK-001 had problems with 20M.
# I have successfully used it with 4M. My _assumption_ is that this is not
# the limitation of the component itself, but a limitation of the EVK.
spi-max-frequency:
maximum: 20000000
"#io-channel-cells":
const: 1
spi-cpha: true
spi-cpol: true
required:
- compatible
- reg
- vdd-supply
- iovdd-supply
- spi-cpha
- spi-cpol
allOf:
- $ref: /schemas/spi/spi-peripheral-props.yaml#
unevaluatedProperties: false
examples:
- |
#include <dt-bindings/interrupt-controller/irq.h>
spi {
#address-cells = <1>;
#size-cells = <0>;
adc@0 {
compatible = "rohm,bd79104";
reg = <0>;
vdd-supply = <&vdd_supply>;
iovdd-supply = <&iovdd_supply>;
spi-max-frequency = <4000000>;
spi-cpha;
spi-cpol;
#io-channel-cells = <1>;
};
};
...
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