Add device tree documentation for AD7091R-8. Signed-off-by: Marcelo Schmitt <marcelo.schmitt@xxxxxxxxxx> --- .../bindings/iio/adc/adi,ad7091r8.yaml | 99 +++++++++++++++++++ 1 file changed, 99 insertions(+) create mode 100644 Documentation/devicetree/bindings/iio/adc/adi,ad7091r8.yaml diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7091r8.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7091r8.yaml new file mode 100644 index 000000000000..02320778f225 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7091r8.yaml @@ -0,0 +1,99 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iio/adc/adi,ad7091r8.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Analog Devices AD7091R8 8-Channel 12-Bit ADC + +maintainers: + - Marcelo Schmitt <marcelo.schmitt@xxxxxxxxxx> + +description: | + Analog Devices AD7091R-8 8-Channel 12-Bit ADC + https://www.analog.com/media/en/technical-documentation/data-sheets/AD7091R-2_7091R-4_7091R-8.pdf + +properties: + compatible: + enum: + - adi,ad7091r2 + - adi,ad7091r4 + - adi,ad7091r8 + + reg: + maxItems: 1 + + vref-supply: true + + adi,conversion-start-gpios: + description: + GPIO connected to the CONVST pin. + This logic input is used to initiate conversions on the analog + input channels. + maxItems: 1 + + reset-gpios: + maxItems: 1 + + interrupts: + maxItems: 1 + +patternProperties: + "^channel@[0-7]$": + $ref: adc.yaml + type: object + description: Represents the external channels which are connected to the ADC. + + properties: + reg: + minimum: 0 + maximum: 7 + + required: + - reg + +required: + - compatible + - reg + - adi,conversion-start-gpios + +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + + # AD7091R-2 does not have ALERT/BUSY/GPO pin + - if: + properties: + compatible: + contains: + enum: + - adi,ad7091r4 + - adi,ad7091r8 + then: + properties: + interrupts: true + else: + properties: + interrupts: false + +unevaluatedProperties: false + +examples: + - | + #include <dt-bindings/interrupt-controller/irq.h> + #include <dt-bindings/gpio/gpio.h> + spi { + #address-cells = <1>; + #size-cells = <0>; + + adc@0 { + compatible = "adi,ad7091r8"; + reg = <0x0>; + spi-max-frequency = <45454545>; + vref-supply = <&adc_vref>; + adi,conversion-start-gpios = <&gpio 25 GPIO_ACTIVE_LOW>; + reset-gpios = <&gpio 27 GPIO_ACTIVE_LOW>; + interrupts = <22 IRQ_TYPE_EDGE_FALLING>; + interrupt-parent = <&gpio>; + }; + }; +... -- 2.42.0
