AD7091R5

AD7091R5 ADC Linux Driver.

Supported Devices

• AD7091R-5

Evaluation Boards

• EVAL-AD7091R-5SDZ

Description

The AD7091R-5 is a 12-bit, multichannel, ultralow power, successive approximation analog-to-digital converter (ADC).

Hardware configuration

Adding Linux driver support

Enabling the driver

Configure kernel with make menuconfig (alternatively use make xconfig or make qconfig)

Note

The AD7091R5 Driver depends on CONFIG_I2C

Linux Kernel Configuration
    Device Drivers  --->
        ...
        <*>     Industrial I/O support --->
            --- Industrial I/O support
            ...
            Analog to digital converters  --->
                ...
                <*>   Analog Devices AD7091R5 ADC driver
                ...
            ...
        ...

Adding a device tree entry

Required properties

• compatible: Must be adi,ad7091r5.

• reg: I2C address for the device.

Optional properties

• vref-supply: phandle + specifier to a regulator for the external VREF supply. If no external VREF is supplied this attribute should be omitted. see: Documentation/devicetree/bindings/regulator/regulator.txt

Device tree example

adc@0 {
    compatible: "adi,ad7091r5";
    reg = <0x2F>;
};