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This version (13 Jan 2021 12:47) was approved by Michael Hennerich.

Table of Contents

ADF4360 Integrated Integer-N Synthesizer/VCO

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”)

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>;
	};

};
resources/tools-software/linux-drivers/iio-pll/adf4360.txt · Last modified: 13 Jan 2021 12:47 by Michael Hennerich

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