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resources:tools-software:linux-drivers:iio-pll:adf4350 [17 Dec 2014 15:23] – [Files] Michael Hennerichresources:tools-software:linux-drivers:iio-pll:adf4350 [31 Mar 2015 10:57] – [Example platform device initialization] Michael Hennerich
Line 39: Line 39:
 | include | [[git.linux.org>include/linux/iio/frequency/adf4350.h]] | | include | [[git.linux.org>include/linux/iio/frequency/adf4350.h]] |
 | Documentation | [[git.linux.org>Documentation/ABI/testing/sysfs-bus-iio-frequency-adf4350]] | | Documentation | [[git.linux.org>Documentation/ABI/testing/sysfs-bus-iio-frequency-adf4350]] |
 +| Documentation | [[git.linux.org>Documentation/devicetree/bindings/iio/frequency/adf4350.txt]] |
  
 ====== Example platform device initialization ====== ====== Example platform device initialization ======
Line 128: Line 129:
 </code> </code>
  
 +====== Devicetree bindings ======
 +
 +<code>
 +Required properties:
 + - compatible: Should be one of
 + * "adi,adf4350": When using the ADF4350 device
 + * "adi,adf4351": When using the ADF4351 device
 + - reg: SPI chip select numbert for the device
 + - spi-max-frequency: Max SPI frequency to use (< 20000000)
 + - clocks: From common clock binding. Clock is phandle to clock for
 + ADF435x Reference Clock (CLKIN).
 +
 +Optional properties:
 + - gpios: GPIO Lock detect - If set with a valid phandle and GPIO number,
 + pll lock state is tested upon read.
 + - adi,channel-spacing: Channel spacing in Hz (influences MODULUS).
 + - adi,power-up-frequency: If set in Hz the PLL tunes to
 + the desired frequency on probe.
 + - adi,reference-div-factor: If set the driver skips dynamic calculation
 + and uses this default value instead.
 + - adi,reference-doubler-enable: Enables reference doubler.
 + - adi,reference-div2-enable: Enables reference divider.
 + - adi,phase-detector-polarity-positive-enable: Enables positive phase
 + detector polarity. Default = negative.
 + - adi,lock-detect-precision-6ns-enable: Enables 6ns lock detect precision.
 + Default = 10ns.
 + - adi,lock-detect-function-integer-n-enable: Enables lock detect
 + for integer-N mode. Default = factional-N mode.
 + - adi,charge-pump-current: Charge pump current in mA.
 + Default = 2500mA.
 + - adi,muxout-select: On chip multiplexer output selection.
 + Valid values for the multiplexer output are:
 + 0: Three-State Output (default)
 + 1: DVDD
 + 2: DGND
 + 3: R-Counter output
 + 4: N-Divider output
 + 5: Analog lock detect
 + 6: Digital lock detect
 + - adi,low-spur-mode-enable: Enables low spur mode.
 + Default = Low noise mode.
 + - adi,cycle-slip-reduction-enable: Enables cycle slip reduction.
 + - adi,charge-cancellation-enable: Enabled charge pump
 + charge cancellation for integer-N modes.
 + - adi,anti-backlash-3ns-enable: Enables 3ns antibacklash pulse width
 + for integer-N modes.
 + - adi,band-select-clock-mode-high-enable: Enables faster band
 + selection logic.
 + - adi,12bit-clk-divider: Clock divider value used when
 + adi,12bit-clkdiv-mode != 0
 + - adi,clk-divider-mode:
 + Valid values for the clkdiv mode are:
 + 0: Clock divider off (default)
 + 1: Fast lock enable
 + 2: Phase resync enable
 + - adi,aux-output-enable: Enables auxiliary RF output.
 + - adi,aux-output-fundamental-enable: Selects fundamental VCO output on
 + the auxiliary RF output. Default = Output of RF dividers.
 + - adi,mute-till-lock-enable: Enables Mute-Till-Lock-Detect function.
 + - adi,output-power: Output power selection.
 + Valid values for the power mode are:
 + 0: -4dBm (default)
 + 1: -1dBm
 + 2: +2dBm
 + 3: +5dBm
 + - adi,aux-output-power: Auxiliary output power selection.
 + Valid values for the power mode are:
 + 0: -4dBm (default)
 + 1: -1dBm
 + 2: +2dBm
 + 3: +5dBm
 +</code>
 +
 +<code>
 +Example:
 + lo_pll0_rx_adf4351: adf4351-rx-lpc@4 {
 + compatible = "adi,adf4351";
 + reg = <4>;
 + spi-max-frequency = <10000000>;
 + clocks = <&clk0_ad9523 9>;
 + clock-names = "clkin";
 + adi,channel-spacing = <10000>;
 + adi,power-up-frequency = <2400000000>;
 + adi,phase-detector-polarity-positive-enable;
 + adi,charge-pump-current = <2500>;
 + adi,output-power = <3>;
 + adi,mute-till-lock-enable;
 + };
 +</code>
 ====== Adding Linux driver support ====== ====== Adding Linux driver support ======
  
resources/tools-software/linux-drivers/iio-pll/adf4350.txt · Last modified: 11 Feb 2016 20:59 by Lars-Peter Clausen

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