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Add documentation for Texas Instruments ADS1018 and ADS1118 analog-to-digital converters. Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com> Signed-off-by: Kurt Borja <kuurtb@gmail.com> Reviewed-by: David Lechner <dlechner@baylibre.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
83 lines
1.8 KiB
YAML
83 lines
1.8 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/iio/adc/ti,ads1018.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: TI ADS1018/ADS1118 SPI analog to digital converter
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maintainers:
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- Kurt Borja <kuurtb@gmail.com>
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description: |
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The ADS1018/ADS1118 is a precision, low-power, 12-bit/16-bit, analog to
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digital converter (ADC). It integrates a programmable gain amplifier (PGA),
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internal voltage reference, oscillator and high-accuracy temperature sensor.
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Datasheets:
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- ADS1018: https://www.ti.com/lit/ds/symlink/ads1018.pdf
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- ADS1118: https://www.ti.com/lit/ds/symlink/ads1118.pdf
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properties:
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compatible:
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enum:
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- ti,ads1018
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- ti,ads1118
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reg:
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maxItems: 1
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vdd-supply: true
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spi-max-frequency:
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maximum: 4000000
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spi-cpha: true
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interrupts:
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description: DOUT/DRDY (Data Out/Data Ready) line.
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maxItems: 1
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drdy-gpios:
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description:
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Extra GPIO line connected to DOUT/DRDY (Data Out/Data Ready). This allows
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distinguishing between interrupts triggered by the data-ready signal and
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interrupts triggered by an SPI transfer.
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maxItems: 1
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'#io-channel-cells':
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const: 1
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required:
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- compatible
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- reg
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- vdd-supply
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allOf:
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- $ref: /schemas/spi/spi-peripheral-props.yaml#
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unevaluatedProperties: 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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#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 = "ti,ads1118";
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reg = <0>;
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spi-max-frequency = <4000000>;
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spi-cpha;
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vdd-supply = <&vdd_3v3_reg>;
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interrupts-extended = <&gpio 14 IRQ_TYPE_EDGE_FALLING>;
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drdy-gpios = <&gpio 14 GPIO_ACTIVE_LOW>;
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};
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};
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