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24e6d7e9f2
Add device tree binding support for the AD4087 14-bit SAR ADC. Add adi,ad4087 to the compatible enum. A fallback compatible string to adi,ad4080 is not appropriate as the AD4087 has different resolution (14-bit vs 20-bit) and LVDS CNV clock count maximum (1 vs 7), requiring different driver configuration. Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com> Acked-by: Conor Dooley <conor.dooley@microchip.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
102 lines
2.2 KiB
YAML
102 lines
2.2 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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# Copyright 2025 Analog Devices Inc.
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/iio/adc/adi,ad4080.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Analog Devices AD4080 20-Bit, 40 MSPS, Differential SAR ADC
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maintainers:
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- Antoniu Miclaus <antoniu.miclaus@analog.com>
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description: |
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The AD4080 is a high speed, low noise, low distortion, 20-bit, Easy Drive,
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successive approximation register (SAR) analog-to-digital converter (ADC).
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Maintaining high performance (signal-to-noise and distortion (SINAD) ratio
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> 90 dBFS) at signal frequencies in excess of 1 MHz enables the AD4080 to
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service a wide variety of precision, wide bandwidth data acquisition
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applications.
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https://www.analog.com/media/en/technical-documentation/data-sheets/ad4080.pdf
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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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- adi,ad4080
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- adi,ad4081
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- adi,ad4083
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- adi,ad4084
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- adi,ad4086
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- adi,ad4087
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reg:
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maxItems: 1
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spi-max-frequency:
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description: Configuration of the SPI bus.
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maximum: 50000000
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clocks:
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maxItems: 1
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clock-names:
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items:
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- const: cnv
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vdd33-supply: true
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vdd11-supply: true
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vddldo-supply: true
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iovdd-supply: true
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vrefin-supply: true
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io-backends:
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maxItems: 1
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adi,lvds-cnv-enable:
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description: Enable the LVDS signal type on the CNV pin. Default is CMOS.
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type: boolean
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adi,num-lanes:
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description:
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Number of lanes on which the data is sent on the output (DA, DB pins).
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$ref: /schemas/types.yaml#/definitions/uint32
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enum: [1, 2]
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default: 1
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required:
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- compatible
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- reg
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- clocks
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- clock-names
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- vdd33-supply
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- vrefin-supply
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additionalProperties: false
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examples:
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- |
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spi {
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#address-cells = <1>;
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#size-cells = <0>;
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adc@0 {
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compatible = "adi,ad4080";
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reg = <0>;
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spi-max-frequency = <10000000>;
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vdd33-supply = <&vdd33>;
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vddldo-supply = <&vddldo>;
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vrefin-supply = <&vrefin>;
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clocks = <&cnv>;
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clock-names = "cnv";
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io-backends = <&iio_backend>;
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};
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};
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...
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