ADF4360

ADF4360 Integrated Integer-N Synthesizer/VCO Linux Driver.

Supported Devices

Description

The ADF4360 is a fully integrated integer-N synthesizer and voltage controlled oscillator (VCO). Control of all the on-chip registers is through a simple 3-wire interface. The device operates with a power supply ranging from 3.0 V to 3.6 V and can be powered down when not in use.

Source Code

Status

Source	Mainlined?
drivers/iio/frequency/adf4360.c	No

Files

Function	File
driver	drivers/iio/frequency/adf4360.c
Documentation	Documentation/devicetree/bindings/iio/frequency/adi,adf4360.yaml

Enabling the driver

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

Note

The ADF4360 Driver depends on CONFIG_SPI

Linux Kernel Configuration
    Device Drivers  --->
    <*>  Industrial I/O support --->
             Frequency Synthesizers DDS/PLL  --->
                 Clock Generator/Distribution  --->
                 <*>  Analog Devices ADF4360 Wideband Synthesizer

Adding a device tree entry

Device tree example

The following example instantiates the adf4360 driver for a adf4360-7 device connected on the SPI bus to the chip-select line 0.

/ {
    clocks {
        adf_ref_clock: clock@0 {
            #clock-cells = <0>;
            compatible = "fixed-clock";
            clock-frequency = <25000000>;
            clock-output-names = "adf_ref_clock";
        };
    };
];

&spi {
    adf4360: pll@0 {
        compatible = "adi,adf4360-7";
        reg = <0>;
        spi-max-frequency = <2000000>;

        #clock-cells = <0>;

        clocks = <&adf_ref_clock>;
        clock-names = "clkin";
        clock-output-names = "adf4360-7";

        adi,loop-filter-charge-pump-current-microamp = <1870>;
        adi,loop-filter-pfd-frequency-hz = <2500000>;
        adi,power-up-frequency-hz = <1000000000>;
    };

};