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-* Analog Devices AD5755 IIO Multi-Channel DAC Linux Driver
-
-Required properties:
- - compatible: Has to contain one of the following:
- adi,ad5755
- adi,ad5755-1
- adi,ad5757
- adi,ad5735
- adi,ad5737
-
- - reg: spi chip select number for the device
- - spi-cpha or spi-cpol: is the only modes that is supported
-
-Recommended properties:
- - spi-max-frequency: Definition as per
- Documentation/devicetree/bindings/spi/spi-bus.txt
-
-Optional properties:
-See include/dt-bindings/iio/ad5755.h
- - adi,ext-dc-dc-compenstation-resistor: boolean set if the hardware have an
- external resistor and thereby bypasses
- the internal compensation resistor.
- - adi,dc-dc-phase:
- Valid values for DC DC Phase control is:
- 0: All dc-to-dc converters clock on the same edge.
- 1: Channel A and Channel B clock on the same edge,
- Channel C and Channel D clock on opposite edges.
- 2: Channel A and Channel C clock on the same edge,
- Channel B and Channel D clock on opposite edges.
- 3: Channel A, Channel B, Channel C, and Channel D
- clock 90 degrees out of phase from each other.
- - adi,dc-dc-freq-hz:
- Valid values for DC DC frequency is [Hz]:
- 250000
- 410000
- 650000
- - adi,dc-dc-max-microvolt:
- Valid values for the maximum allowed Vboost voltage supplied by
- the dc-to-dc converter is:
- 23000000
- 24500000
- 27000000
- 29500000
-
-Optional for every channel:
- - adi,mode:
- Valid values for DAC modes is:
- 0: 0 V to 5 V voltage range.
- 1: 0 V to 10 V voltage range.
- 2: Plus minus 5 V voltage range.
- 3: Plus minus 10 V voltage range.
- 4: 4 mA to 20 mA current range.
- 5: 0 mA to 20 mA current range.
- 6: 0 mA to 24 mA current range.
- - adi,ext-current-sense-resistor: boolean set if the hardware a external
- current sense resistor.
- - adi,enable-voltage-overrange: boolean enable voltage overrange
- - adi,slew: Array of slewrate settings should contain 3 fields:
- 1: Should be either 0 or 1 in order to enable or disable slewrate.
- 2: Slew rate settings:
- Valid values for the slew rate update frequency:
- 64000
- 32000
- 16000
- 8000
- 4000
- 2000
- 1000
- 500
- 250
- 125
- 64
- 32
- 16
- 8
- 4
- 0
- 3: Slew step size:
- Valid values for the step size LSBs:
- 1
- 2
- 4
- 16
- 32
- 64
- 128
- 256
-
-Example:
-dac@0 {
- #address-cells = <1>;
- #size-cells = <0>;
- compatible = "adi,ad5755";
- reg = <0>;
- spi-max-frequency = <1000000>;
- spi-cpha;
- adi,dc-dc-phase = <0>;
- adi,dc-dc-freq-hz = <410000>;
- adi,dc-dc-max-microvolt = <23000000>;
- channel@0 {
- reg = <0>;
- adi,mode = <4>;
- adi,ext-current-sense-resistor;
- adi,slew = <0 64000 1>;
- };
- channel@1 {
- reg = <1>;
- adi,mode = <4>;
- adi,ext-current-sense-resistor;
- adi,slew = <0 64000 1>;
- };
- channel@2 {
- reg = <2>;
- adi,mode = <4>;
- adi,ext-current-sense-resistor;
- adi,slew = <0 64000 1>;
- };
- channel@3 {
- reg = <3>;
- adi,mode = <4>;
- adi,ext-current-sense-resistor;
- adi,slew = <0 64000 1>;
- };
-};