| # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) |
| %YAML 1.2 |
| --- |
| $id: http://devicetree.org/schemas/iio/dac/adi,ad5758.yaml# |
| $schema: http://devicetree.org/meta-schemas/core.yaml# |
| |
| title: Analog Devices AD5758 DAC |
| |
| maintainers: |
| - Michael Hennerich <Michael.Hennerich@analog.com> |
| |
| properties: |
| compatible: |
| const: adi,ad5758 |
| |
| reg: |
| maxItems: 1 |
| |
| spi-cpha: true |
| |
| adi,dc-dc-mode: |
| $ref: /schemas/types.yaml#/definitions/uint32 |
| enum: [1, 2, 3] |
| description: | |
| Mode of operation of the dc-to-dc converter |
| Dynamic Power Control (DPC) |
| In this mode, the AD5758 circuitry senses the output voltage and |
| dynamically regulates the supply voltage, VDPC+, to meet compliance |
| requirements plus an optimized headroom voltage for the output buffer. |
| |
| Programmable Power Control (PPC) |
| In this mode, the VDPC+ voltage is user-programmable to a fixed level |
| that needs to accommodate the maximum output load required. |
| |
| The output of the DAC core is either converted to a current or |
| voltage output at the VIOUT pin. Only one mode can be enabled at |
| any one time. |
| |
| The following values are currently supported: |
| * 1: DPC current mode |
| * 2: DPC voltage mode |
| * 3: PPC current mode |
| |
| Depending on the selected output mode (voltage or current) one of the |
| two properties must be present: |
| |
| adi,range-microvolt: |
| description: | |
| Voltage output range specified as <minimum, maximum> |
| oneOf: |
| - items: |
| - const: 0 |
| - enum: [5000000, 10000000] |
| - items: |
| - const: -5000000 |
| - const: 5000000 |
| - items: |
| - const: -10000000 |
| - const: 10000000 |
| |
| adi,range-microamp: |
| description: | |
| Current output range specified as <minimum, maximum> |
| oneOf: |
| - items: |
| - const: 0 |
| - enum: [20000, 24000] |
| - items: |
| - const: 4 |
| - const: 24000 |
| - items: |
| - const: -20000 |
| - const: 20000 |
| - items: |
| - const: -24000 |
| - const: 24000 |
| - items: |
| - const: -1000 |
| - const: 22000 |
| |
| reset-gpios: |
| maxItems: 1 |
| |
| adi,dc-dc-ilim-microamp: |
| enum: [150000, 200000, 250000, 300000, 350000, 400000] |
| description: | |
| The dc-to-dc converter current limit. |
| |
| adi,slew-time-us: |
| description: | |
| The time it takes for the output to reach the full scale [uS] |
| minimum: 133 |
| maximum: 1023984375 |
| |
| required: |
| - compatible |
| - reg |
| - spi-cpha |
| - adi,dc-dc-mode |
| |
| allOf: |
| - $ref: /schemas/spi/spi-peripheral-props.yaml# |
| - if: |
| properties: |
| adi,dc-dc-mode: |
| enum: [1, 3] |
| then: |
| properties: |
| adi,range-microvolt: false |
| required: |
| - adi,range-microamp |
| else: |
| properties: |
| adi,range-microamp: false |
| required: |
| - adi,range-microvolt |
| |
| unevaluatedProperties: false |
| |
| examples: |
| - | |
| spi { |
| #address-cells = <1>; |
| #size-cells = <0>; |
| |
| dac@0 { |
| compatible = "adi,ad5758"; |
| reg = <0>; |
| spi-max-frequency = <1000000>; |
| spi-cpha; |
| |
| reset-gpios = <&gpio 22 0>; |
| |
| adi,dc-dc-mode = <2>; |
| adi,range-microvolt = <0 10000000>; |
| adi,dc-dc-ilim-microamp = <200000>; |
| adi,slew-time-us = <125000>; |
| }; |
| }; |
| ... |
