| # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
| %YAML 1.2 |
| --- |
| $id: http://devicetree.org/schemas/iio/adc/adi,ad7091r5.yaml# |
| $schema: http://devicetree.org/meta-schemas/core.yaml# |
| |
| title: Analog Devices AD7091R-2/-4/-5/-8 Multi-Channel 12-Bit ADCs |
| |
| maintainers: |
| - Michael Hennerich <michael.hennerich@analog.com> |
| - Marcelo Schmitt <marcelo.schmitt@analog.com> |
| |
| description: | |
| Analog Devices AD7091R5 4-Channel 12-Bit ADC supporting I2C interface |
| https://www.analog.com/media/en/technical-documentation/data-sheets/ad7091r-5.pdf |
| Analog Devices AD7091R-2/AD7091R-4/AD7091R-8 2-/4-/8-Channel 12-Bit ADCs |
| supporting SPI interface |
| 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,ad7091r5 |
| - adi,ad7091r8 |
| |
| reg: |
| maxItems: 1 |
| |
| vdd-supply: |
| description: |
| Provide VDD power to the sensor (VDD range is from 2.7V to 5.25V). |
| |
| vdrive-supply: |
| description: |
| Determines the voltage level at which the interface logic will operate. |
| The V_drive voltage range is from 1.8V to 5.25V and must not exceed VDD by |
| more than 0.3V. |
| |
| vref-supply: |
| description: |
| Phandle to the vref power supply |
| |
| convst-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: |
| description: |
| Interrupt for signaling when conversion results exceed the high limit for |
| ADC readings or fall below the low limit for them. Interrupt source must |
| be attached to ALERT/BUSY/GPO0 pin. |
| maxItems: 1 |
| |
| required: |
| - compatible |
| - reg |
| |
| allOf: |
| - $ref: /schemas/spi/spi-peripheral-props.yaml# |
| |
| # AD7091R-2 does not have ALERT/BUSY/GPO pin |
| - if: |
| properties: |
| compatible: |
| contains: |
| enum: |
| - adi,ad7091r2 |
| then: |
| properties: |
| interrupts: false |
| |
| - if: |
| properties: |
| compatible: |
| contains: |
| enum: |
| - adi,ad7091r2 |
| - adi,ad7091r4 |
| - adi,ad7091r8 |
| then: |
| required: |
| - convst-gpios |
| |
| unevaluatedProperties: false |
| |
| examples: |
| - | |
| #include <dt-bindings/gpio/gpio.h> |
| #include <dt-bindings/interrupt-controller/irq.h> |
| i2c { |
| #address-cells = <1>; |
| #size-cells = <0>; |
| |
| adc@2f { |
| compatible = "adi,ad7091r5"; |
| reg = <0x2f>; |
| |
| interrupts = <25 IRQ_TYPE_EDGE_FALLING>; |
| interrupt-parent = <&gpio>; |
| }; |
| }; |
| - | |
| #include <dt-bindings/gpio/gpio.h> |
| #include <dt-bindings/interrupt-controller/irq.h> |
| spi { |
| #address-cells = <1>; |
| #size-cells = <0>; |
| |
| adc@0 { |
| compatible = "adi,ad7091r8"; |
| reg = <0x0>; |
| spi-max-frequency = <1000000>; |
| vref-supply = <&adc_vref>; |
| convst-gpios = <&gpio 25 GPIO_ACTIVE_LOW>; |
| reset-gpios = <&gpio 27 GPIO_ACTIVE_LOW>; |
| interrupts = <22 IRQ_TYPE_EDGE_FALLING>; |
| interrupt-parent = <&gpio>; |
| }; |
| }; |
| ... |
