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dt-bindings: iio: adc: Add AD4134
Add device tree documentation for AD4134 24-Bit, 4-channel simultaneous sampling, precision ADC. Reviewed-by: Conor Dooley <conor.dooley@microchip.com> Signed-off-by: Marcelo Schmitt <marcelo.schmitt@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Marcelo Schmitt
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Jonathan Cameron
Jonathan Cameron
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191
Documentation/devicetree/bindings/iio/adc/adi,ad4134.yaml
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191
Documentation/devicetree/bindings/iio/adc/adi,ad4134.yaml
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# 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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$id: http://devicetree.org/schemas/iio/adc/adi,ad4134.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Analog Devices AD4134 ADC
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maintainers:
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- Marcelo Schmitt <marcelo.schmitt@analog.com>
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description: |
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The AD4134 is a quad channel, low noise, simultaneous sampling, precision
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analog-to-digital converter (ADC).
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Specifications can be found at:
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https://www.analog.com/media/en/technical-documentation/data-sheets/ad4134.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,ad4134
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reg:
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maxItems: 1
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spi-max-frequency:
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maximum: 50000000
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avdd5-supply:
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description: A 5V supply that powers the chip's analog circuitry.
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dvdd5-supply:
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description: A 5V supply that powers the chip's digital circuitry.
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iovdd-supply:
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description:
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A 1.8V supply that sets the logic levels for the digital interface pins.
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refin-supply:
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description:
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A 4.096V or 5V supply that serves as reference for ADC conversions.
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avdd1v8-supply:
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description: A 1.8V supply used by the analog circuitry.
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dvdd1v8-supply:
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description: A 1.8V supply used by the digital circuitry.
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clkvdd-supply:
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description: A 1.8V supply for the chip's clock management circuit.
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ldoin-supply:
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description:
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A 2.6V to 5.5V supply that generates 1.8V for AVDD1V8, DVDD1V8, and CLKVDD
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pins.
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clocks:
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maxItems: 1
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description:
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Required external clock source. Can specify either a crystal or CMOS clock
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source. If an external crystal is set, connect the CLKSEL pin to IOVDD.
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Otherwise, connect the CLKSEL pin to IOGND and the external CMOS clock
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signal to the XTAL2/CLKIN pin.
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clock-names:
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enum:
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- xtal
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- clkin
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default: clkin
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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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regulators:
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type: object
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description:
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list of regulators provided by this controller.
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properties:
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vcm-output:
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$ref: /schemas/regulator/regulator.yaml#
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type: object
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unevaluatedProperties: false
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additionalProperties: false
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reset-gpios:
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maxItems: 1
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powerdown-gpios:
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description:
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Active low GPIO connected to the /PDN pin. Forces the device into full
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power-down mode when brought low. Pull this input to IOVDD for normal
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operation.
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maxItems: 1
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odr-gpios:
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description:
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GPIO connected to ODR pin. Used to sample ADC data in minimum I/O mode.
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maxItems: 1
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adi,asrc-mode:
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$ref: /schemas/types.yaml#/definitions/string
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description:
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Asynchronous Sample Rate Converter (ASRC) operation mode control input.
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Describes whether the MODE pin is set to a high level (for master mode
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operation) or to a low level (for slave mode operation).
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enum: [ high, low ]
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default: low
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adi,dclkio:
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description:
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DCLK pin I/O direction control for when the device operates in Pin Control
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Slave Mode or in SPI Control Mode. Describes if DEC0/DCLKIO pin is at a
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high level (which configures DCLK as an output) or to set to a low level
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(configuring DCLK for input).
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enum: [ out, in ]
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default: in
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adi,dclkmode:
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description:
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DCLK mode control for when the device operates in Pin Control Slave Mode
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or in SPI Control Mode. Describes whether the DEC1/DCLKMODE pin is set to
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a high level (configuring the DCLK to operate in free running mode) or
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to a low level (to configure DCLK to operate in gated mode).
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enum: [ free-running, gated ]
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default: gated
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required:
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- compatible
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- reg
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- avdd5-supply
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- dvdd5-supply
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- iovdd-supply
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- refin-supply
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- clocks
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- clock-names
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oneOf:
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- required:
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- ldoin-supply
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- required:
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- avdd1v8-supply
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- dvdd1v8-supply
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- clkvdd-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,ad4134";
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reg = <0>;
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spi-max-frequency = <1000000>;
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reset-gpios = <&gpio0 86 GPIO_ACTIVE_LOW>;
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odr-gpios = <&gpio0 87 GPIO_ACTIVE_HIGH>;
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powerdown-gpios = <&gpio0 88 GPIO_ACTIVE_LOW>;
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clocks = <&sys_clk>;
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clock-names = "clkin";
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avdd5-supply = <&avdd5>;
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dvdd5-supply = <&dvdd5>;
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iovdd-supply = <&iovdd>;
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refin-supply = <&refin>;
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avdd1v8-supply = <&avdd1v8>;
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dvdd1v8-supply = <&dvdd1v8>;
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clkvdd-supply = <&clkvdd>;
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regulators {
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vcm_reg: vcm-output {
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regulator-name = "ad4134-vcm";
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};
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};
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};
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};
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...
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@@ -1458,6 +1458,13 @@ F: Documentation/ABI/testing/sysfs-bus-iio-adc-ad4130
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F: Documentation/devicetree/bindings/iio/adc/adi,ad4130.yaml
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F: drivers/iio/adc/ad4130.c
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ANALOG DEVICES INC AD4134 DRIVER
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M: Marcelo Schmitt <marcelo.schmitt@analog.com>
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L: linux-iio@vger.kernel.org
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S: Supported
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W: https://ez.analog.com/linux-software-drivers
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F: Documentation/devicetree/bindings/iio/adc/adi,ad4134.yaml
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ANALOG DEVICES INC AD4170-4 DRIVER
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M: Marcelo Schmitt <marcelo.schmitt@analog.com>
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L: linux-iio@vger.kernel.org
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