| # 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 <michael.hennerich@analog.com> |
| - Kim Seer Paller <kimseer.paller@analog.com> |
| |
| 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>; |
| }; |
| }; |
| }; |
| ... |
