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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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8de148c018
This adds a binding specification for the Analog Devices Inc. AD4030, AD4630 and AD4632 families of ADCs. - ad4030-24 is a 1 channel SAR ADC with 24 bits of precision and a sampling rate of 2M samples per second - ad4032-24 is a 1 channel SAR ADC with 24 bits of precision and a sampling rate of 500K samples per second - ad4630-16 is a 2 channels SAR ADC with 16 bits of precision and a sampling rate of 2M samples per second - ad4630-24 is a 2 channels SAR ADC with 24 bits of precision and a sampling rate of 2M samples per second - ad4632-16 is a 2 channels SAR ADC with 16 bits of precision and a sampling rate of 500K samples per second - ad4632-24 is a 2 channels SAR ADC with 24 bits of precision and a sampling rate of 500K samples per second Reviewed-by: Conor Dooley <conor.dooley@microchip.com> Signed-off-by: Esteban Blanc <eblanc@baylibre.com> Link: https://patch.msgid.link/20250214-eblanc-ad4630_v1-v4-1-135dd66cab6a@baylibre.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
111 lines
2.6 KiB
YAML
111 lines
2.6 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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# Copyright 2024 Analog Devices Inc.
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# Copyright 2024 BayLibre, SAS.
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/iio/adc/adi,ad4030.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Analog Devices AD4030 and AD4630 ADC families
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maintainers:
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- Michael Hennerich <michael.hennerich@analog.com>
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- Nuno Sa <nuno.sa@analog.com>
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description: |
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Analog Devices AD4030 single channel and AD4630/AD4632 dual channel precision
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SAR ADC families
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* https://www.analog.com/media/en/technical-documentation/data-sheets/ad4030-24-4032-24.pdf
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* https://www.analog.com/media/en/technical-documentation/data-sheets/ad4630-24_ad4632-24.pdf
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* https://www.analog.com/media/en/technical-documentation/data-sheets/ad4630-16-4632-16.pdf
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properties:
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compatible:
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enum:
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- adi,ad4030-24
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- adi,ad4032-24
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- adi,ad4630-16
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- adi,ad4630-24
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- adi,ad4632-16
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- adi,ad4632-24
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reg:
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maxItems: 1
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spi-max-frequency:
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maximum: 102040816
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spi-rx-bus-width:
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enum: [1, 2, 4]
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vdd-5v-supply: true
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vdd-1v8-supply: true
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vio-supply: true
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ref-supply:
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description:
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Optional External unbuffered reference. Used when refin-supply is not
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connected.
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refin-supply:
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description:
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Internal buffered Reference. Used when ref-supply is not connected.
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cnv-gpios:
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description:
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The Convert Input (CNV). It initiates the sampling conversions.
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maxItems: 1
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reset-gpios:
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description:
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The Reset Input (/RST). Used for asynchronous device reset.
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maxItems: 1
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interrupts:
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description:
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The BUSY pin is used to signal that the conversions results are available
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to be transferred when in SPI Clocking Mode. This nodes should be
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connected to an interrupt that is triggered when the BUSY line goes low.
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maxItems: 1
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interrupt-names:
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const: busy
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required:
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- compatible
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- reg
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- vdd-5v-supply
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- vdd-1v8-supply
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- vio-supply
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- cnv-gpios
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oneOf:
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- required:
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- ref-supply
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- required:
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- refin-supply
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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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adc@0 {
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compatible = "adi,ad4030-24";
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reg = <0>;
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spi-max-frequency = <80000000>;
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vdd-5v-supply = <&supply_5V>;
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vdd-1v8-supply = <&supply_1_8V>;
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vio-supply = <&supply_1_8V>;
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ref-supply = <&supply_5V>;
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cnv-gpios = <&gpio0 0 GPIO_ACTIVE_HIGH>;
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reset-gpios = <&gpio0 1 GPIO_ACTIVE_LOW>;
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};
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};
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