dt-bindings: iio: adc: add AD4130
AD4130-8 is an ultra-low power, high precision, measurement solution for low bandwidth battery operated applications. The fully integrated AFE (Analog Front-End) includes a multiplexer for up to 16 single-ended or 8 differential inputs, PGA (Programmable Gain Amplifier), 24-bit Sigma-Delta ADC, on-chip reference and oscillator, selectable filter options, smart sequencer, sensor biasing and excitation options, diagnostics, and a FIFO buffer. Signed-off-by: Cosmin Tanislav <cosmin.tanislav@analog.com> Reviewed-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20221021104115.1812486-2-demonsingur@gmail.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Cosmin Tanislav
Jonathan Cameron
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Documentation/devicetree/bindings/iio/adc/adi,ad4130.yaml
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259
Documentation/devicetree/bindings/iio/adc/adi,ad4130.yaml
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# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
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# Copyright 2022 Analog Devices Inc.
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/iio/adc/adi,ad4130.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Analog Devices AD4130 ADC device driver
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maintainers:
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- Cosmin Tanislav <cosmin.tanislav@analog.com>
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description: |
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Bindings for the Analog Devices AD4130 ADC. Datasheet can be found here:
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https://www.analog.com/media/en/technical-documentation/data-sheets/AD4130-8.pdf
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properties:
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compatible:
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enum:
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- adi,ad4130
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reg:
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maxItems: 1
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clocks:
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maxItems: 1
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description: phandle to the master clock (mclk)
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clock-names:
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items:
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- const: mclk
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interrupts:
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maxItems: 1
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interrupt-names:
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description: |
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Specify which interrupt pin should be configured as Data Ready / FIFO
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interrupt.
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Default if not supplied is int.
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enum:
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- int
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- clk
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- p2
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- dout
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'#address-cells':
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const: 1
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'#size-cells':
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const: 0
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'#clock-cells':
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const: 0
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clock-output-names:
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maxItems: 1
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refin1-supply:
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description: refin1 supply. Can be used as reference for conversion.
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refin2-supply:
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description: refin2 supply. Can be used as reference for conversion.
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avdd-supply:
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description: AVDD voltage supply. Can be used as reference for conversion.
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iovdd-supply:
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description: IOVDD voltage supply. Used for the chip interface.
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spi-max-frequency:
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maximum: 5000000
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adi,ext-clk-freq-hz:
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description: Specify the frequency of the external clock.
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enum: [76800, 153600]
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default: 76800
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adi,bipolar:
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description: Specify if the device should be used in bipolar mode.
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type: boolean
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adi,vbias-pins:
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description: Analog inputs to apply a voltage bias of (AVDD − AVSS) / 2 to.
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$ref: /schemas/types.yaml#/definitions/uint32-array
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minItems: 1
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maxItems: 16
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items:
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minimum: 0
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maximum: 15
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required:
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- compatible
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- reg
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- interrupts
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patternProperties:
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"^channel@([0-9a-f])$":
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type: object
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$ref: adc.yaml
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unevaluatedProperties: false
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properties:
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reg:
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description: The channel number.
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minimum: 0
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maximum: 15
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diff-channels:
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description: |
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Besides the analog inputs available, internal inputs can be used.
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16: Internal temperature sensor.
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17: AVSS
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18: Internal reference
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19: DGND
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20: (AVDD − AVSS)/6+
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21: (AVDD − AVSS)/6-
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22: (IOVDD − DGND)/6+
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23: (IOVDD − DGND)/6-
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24: (ALDO − AVSS)/6+
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25: (ALDO − AVSS)/6-
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26: (DLDO − DGND)/6+
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27: (DLDO − DGND)/6-
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28: V_MV_P
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29: V_MV_M
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items:
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minimum: 0
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maximum: 29
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adi,reference-select:
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description: |
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Select the reference source to use when converting on the
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specific channel. Valid values are:
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0: REFIN1(+)/REFIN1(−)
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1: REFIN2(+)/REFIN2(−)
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2: REFOUT/AVSS (Internal reference)
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3: AVDD/AVSS
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If not specified, REFIN1 is used.
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$ref: /schemas/types.yaml#/definitions/uint32
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enum: [0, 1, 2, 3]
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default: 0
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adi,excitation-pin-0:
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description: |
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Analog input to apply excitation current to while the channel
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is active.
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$ref: /schemas/types.yaml#/definitions/uint32
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minimum: 0
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maximum: 15
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default: 0
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adi,excitation-pin-1:
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description: |
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Analog input to apply excitation current to while this channel
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is active.
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$ref: /schemas/types.yaml#/definitions/uint32
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minimum: 0
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maximum: 15
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default: 0
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adi,excitation-current-0-nanoamp:
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description: |
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Excitation current in nanoamps to be applied to pin specified in
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adi,excitation-pin-0 while this channel is active.
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enum: [0, 100, 10000, 20000, 50000, 100000, 150000, 200000]
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default: 0
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adi,excitation-current-1-nanoamp:
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description: |
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Excitation current in nanoamps to be applied to pin specified in
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adi,excitation-pin-1 while this channel is active.
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enum: [0, 100, 10000, 20000, 50000, 100000, 150000, 200000]
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default: 0
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adi,burnout-current-nanoamp:
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description: |
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Burnout current in nanoamps to be applied for this channel.
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enum: [0, 500, 2000, 4000]
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default: 0
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adi,buffered-positive:
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description: Enable buffered mode for positive input.
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type: boolean
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adi,buffered-negative:
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description: Enable buffered mode for negative input.
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type: boolean
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required:
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- reg
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- diff-channels
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/interrupt-controller/irq.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,ad4130";
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reg = <0>;
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#address-cells = <1>;
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#size-cells = <0>;
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spi-max-frequency = <5000000>;
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interrupts = <27 IRQ_TYPE_EDGE_FALLING>;
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interrupt-parent = <&gpio>;
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channel@0 {
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reg = <0>;
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adi,reference-select = <2>;
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/* AIN8, AIN9 */
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diff-channels = <8 9>;
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};
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channel@1 {
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reg = <1>;
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adi,reference-select = <2>;
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/* AIN10, AIN11 */
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diff-channels = <10 11>;
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};
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channel@2 {
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reg = <2>;
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adi,reference-select = <2>;
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/* Temperature Sensor, DGND */
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diff-channels = <16 19>;
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};
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channel@3 {
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reg = <3>;
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adi,reference-select = <2>;
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/* Internal reference, DGND */
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diff-channels = <18 19>;
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};
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channel@4 {
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reg = <4>;
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adi,reference-select = <2>;
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/* DGND, DGND */
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diff-channels = <19 19>;
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};
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};
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};
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@ -1117,6 +1117,13 @@ T: git git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git
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T: git git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git
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F: drivers/net/amt.c
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ANALOG DEVICES INC AD4130 DRIVER
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M: Cosmin Tanislav <cosmin.tanislav@analog.com>
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L: linux-iio@vger.kernel.org
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S: Supported
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W: http://ez.analog.com/community/linux-device-drivers
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F: Documentation/devicetree/bindings/iio/adc/adi,ad4130.yaml
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ANALOG DEVICES INC AD7192 DRIVER
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M: Alexandru Tachici <alexandru.tachici@analog.com>
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L: linux-iio@vger.kernel.org
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