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In cases where we don't reference another schema, 'additionalProperties' can be used instead. This is preferred for now as 'unevaluatedProperties' support isn't implemented yet. In a few cases, this means adding some missing property definitions of which most are for SPI bus properties. 'unevaluatedProperties' is not going to work for the SPI bus properties anyways as they are evaluated from the parent node, not the SPI child node. Acked-by: Mark Brown <broonie@kernel.org> Acked-by: Krzysztof Kozlowski <krzk@kernel.org> Acked-by: Lee Jones <lee.jones@linaro.org> Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Acked-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20201005183830.486085-3-robh@kernel.org Signed-off-by: Rob Herring <robh@kernel.org>
142 lines
4.3 KiB
YAML
142 lines
4.3 KiB
YAML
# SPDX-License-Identifier: GPL-2.0
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/iio/adc/adi,ad7606.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Analog Devices AD7606 Simultaneous Sampling ADC
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maintainers:
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- Beniamin Bia <beniamin.bia@analog.com>
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- Stefan Popa <stefan.popa@analog.com>
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description: |
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Analog Devices AD7606 Simultaneous Sampling ADC
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https://www.analog.com/media/en/technical-documentation/data-sheets/ad7606_7606-6_7606-4.pdf
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https://www.analog.com/media/en/technical-documentation/data-sheets/AD7606B.pdf
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https://www.analog.com/media/en/technical-documentation/data-sheets/AD7616.pdf
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properties:
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compatible:
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enum:
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- adi,ad7605-4
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- adi,ad7606-8
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- adi,ad7606-6
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- adi,ad7606-4
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- adi,ad7606b
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- adi,ad7616
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reg:
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maxItems: 1
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spi-cpha: true
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spi-cpol: true
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spi-max-frequency: true
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avcc-supply: true
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interrupts:
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maxItems: 1
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adi,conversion-start-gpios:
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description:
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Must be the device tree identifier of the CONVST pin.
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This logic input is used to initiate conversions on the analog
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input channels. As the line is active high, it should be marked
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GPIO_ACTIVE_HIGH.
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maxItems: 1
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reset-gpios:
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description:
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Must be the device tree identifier of the RESET pin. If specified,
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it will be asserted during driver probe. As the line is active high,
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it should be marked GPIO_ACTIVE_HIGH.
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maxItems: 1
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standby-gpios:
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description:
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Must be the device tree identifier of the STBY pin. This pin is used
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to place the AD7606 into one of two power-down modes, Standby mode or
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Shutdown mode. As the line is active low, it should be marked
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GPIO_ACTIVE_LOW.
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maxItems: 1
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adi,first-data-gpios:
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description:
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Must be the device tree identifier of the FRSTDATA pin.
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The FRSTDATA output indicates when the first channel, V1, is
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being read back on either the parallel, byte or serial interface.
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As the line is active high, it should be marked GPIO_ACTIVE_HIGH.
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maxItems: 1
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adi,range-gpios:
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description:
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Must be the device tree identifier of the RANGE pin. The polarity on
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this pin determines the input range of the analog input channels. If
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this pin is tied to a logic high, the analog input range is ±10V for
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all channels. If this pin is tied to a logic low, the analog input range
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is ±5V for all channels. As the line is active high, it should be marked
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GPIO_ACTIVE_HIGH.
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maxItems: 1
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adi,oversampling-ratio-gpios:
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description:
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Must be the device tree identifier of the over-sampling
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mode pins. As the line is active high, it should be marked
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GPIO_ACTIVE_HIGH.
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maxItems: 3
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adi,sw-mode:
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description:
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Software mode of operation, so far available only for ad7616 and ad7606b.
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It is enabled when all three oversampling mode pins are connected to
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high level. The device is configured by the corresponding registers. If the
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adi,oversampling-ratio-gpios property is defined, then the driver will set the
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oversampling gpios to high. Otherwise, it is assumed that the pins are hardwired
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to VDD.
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type: boolean
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required:
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- compatible
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- reg
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- spi-cpha
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- avcc-supply
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- interrupts
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- adi,conversion-start-gpios
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/gpio/gpio.h>
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#include <dt-bindings/interrupt-controller/irq.h>
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spi0 {
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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,ad7606-8";
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reg = <0>;
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spi-max-frequency = <1000000>;
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spi-cpol;
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spi-cpha;
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avcc-supply = <&adc_vref>;
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interrupts = <25 IRQ_TYPE_EDGE_FALLING>;
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interrupt-parent = <&gpio>;
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adi,conversion-start-gpios = <&gpio 17 GPIO_ACTIVE_HIGH>;
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reset-gpios = <&gpio 27 GPIO_ACTIVE_HIGH>;
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adi,first-data-gpios = <&gpio 22 GPIO_ACTIVE_HIGH>;
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adi,oversampling-ratio-gpios = <&gpio 18 GPIO_ACTIVE_HIGH>,
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<&gpio 23 GPIO_ACTIVE_HIGH>,
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<&gpio 26 GPIO_ACTIVE_HIGH>;
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standby-gpios = <&gpio 24 GPIO_ACTIVE_LOW>;
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adi,sw-mode;
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};
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};
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...
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