# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/iio/dac/adi,ltc2672.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Analog Devices LTC2672 DAC
maintainers:
- Michael Hennerich <[email protected]>
- Kim Seer Paller <[email protected]>
description: |
Analog Devices LTC2672 5 channel, 12-/16-Bit, 300mA DAC
https://www.analog.com/media/en/technical-documentation/data-sheets/ltc2672.pdf
properties:
compatible:
enum:
- adi,ltc2672
reg:
maxItems: 1
spi-max-frequency:
maximum: 50000000
vcc-supply:
description: Analog Supply Voltage Input.
v-neg-supply:
description: Negative Supply Voltage Input.
vdd0-supply:
description: Positive Supply Voltage Input for DAC OUT0.
vdd1-supply:
description: Positive Supply Voltage Input for DAC OUT1.
vdd2-supply:
description: Positive Supply Voltage Input for DAC OUT2.
vdd3-supply:
description: Positive Supply Voltage Input for DAC OUT3.
vdd4-supply:
description: Positive Supply Voltage Input for DAC OUT4.
iovcc-supply:
description: Digital Input/Output Supply Voltage.
ref-supply:
description:
Reference Input/Output. The voltage at the REF pin sets the full-scale
range of all channels. If not provided the internal reference is used and
also provided on the VREF pin.
reset-gpios:
description:
Active Low Asynchronous Clear Input. A logic low at this level triggered
input clears the device to the default reset code and output range, which
is zero-scale with the outputs off. The control registers are cleared to
zero.
maxItems: 1
adi,rfsadj-ohms:
description:
If FSADJ is tied to VCC, an internal RFSADJ (20 kΩ) is selected, which
results in nominal output ranges. When an external resistor of 19 kΩ to
41 kΩ can be used instead by connecting the resistor between FSADJ and GND
it controls the scaling of the ranges, and the internal resistor is
automatically disconnected.
minimum: 19000
maximum: 41000
default: 20000
io-channels:
description:
ADC channel to monitor voltages and currents at the MUX pin.
maxItems: 1
'#address-cells':
const: 1
'#size-cells':
const: 0
patternProperties:
"^channel@[0-4]$":
$ref: dac.yaml
type: object
additionalProperties: false
properties:
reg:
description: The channel number representing the DAC output channel.
maximum: 4
adi,toggle-mode:
description:
Set the channel as a toggle enabled channel. Toggle operation enables
fast switching of a DAC output between two different DAC codes without
any SPI transaction.
type: boolean
output-range-microamp:
items:
- const: 0
- enum: [3125000, 6250000, 12500000, 25000000, 50000000, 100000000,
200000000, 300000000]
required:
- reg
- output-range-microamp
required:
- compatible
- reg
- spi-max-frequency
- vcc-supply
- iovcc-supply
- v-neg-supply
allOf:
- $ref: /schemas/spi/spi-peripheral-props.yaml#
additionalProperties: false
examples:
- |
spi {
#address-cells = <1>;
#size-cells = <0>;
dac@0 {
compatible = "adi,ltc2672";
reg = <0>;
spi-max-frequency = <10000000>;
vcc-supply = <&vcc>;
iovcc-supply = <&vcc>;
ref-supply = <&vref>;
v-neg-supply = <&vneg>;
io-channels = <&adc 0>;
#address-cells = <1>;
#size-cells = <0>;
channel@0 {
reg = <0>;
adi,toggle-mode;
output-range-microamp = <0 3125000>;
};
channel@1 {
reg = <1>;
output-range-microamp = <0 6250000>;
};
};
};
...
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