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Diffstat (limited to 'Documentation/devicetree/bindings/iio/dac/adi,ad5755.yaml')
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1 files changed, 169 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/iio/dac/adi,ad5755.yaml b/Documentation/devicetree/bindings/iio/dac/adi,ad5755.yaml new file mode 100644 index 0000000000..9a3c2926bf --- /dev/null +++ b/Documentation/devicetree/bindings/iio/dac/adi,ad5755.yaml @@ -0,0 +1,169 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iio/dac/adi,ad5755.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Analog Devices AD5755 Multi-Channel DAC + +maintainers: + - Sean Nyekjaer <sean.nyekjaer@prevas.dk> + +properties: + compatible: + enum: + - adi,ad5755 + - adi,ad5755-1 + - adi,ad5757 + - adi,ad5735 + - adi,ad5737 + + reg: + maxItems: 1 + + spi-cpha: + description: Either this or spi-cpol but not both. + spi-cpol: true + + adi,ext-dc-dc-compenstation-resistor: + $ref: /schemas/types.yaml#/definitions/flag + description: + Set if the hardware have an external resistor and thereby bypasses + the internal compensation resistor. + + adi,dc-dc-phase: + $ref: /schemas/types.yaml#/definitions/uint32 + enum: [0, 1, 2, 3] + description: | + Valid values for DC DC Phase control is: + 0: All dc-to-dc converters clock on the same edge. + 1: Channel A and Channel B clock on the same edge, + Channel C and Channel D clock on opposite edges. + 2: Channel A and Channel C clock on the same edge, + Channel B and Channel D clock on opposite edges. + 3: Channel A, Channel B, Channel C, and Channel D + clock 90 degrees out of phase from each other. + + adi,dc-dc-freq-hz: + enum: [250000, 410000, 650000] + + adi,dc-dc-max-microvolt: + description: + Maximum allowed Vboost voltage supplied by the dc-to-dc converter. + enum: [23000000, 24500000, 27000000, 29500000] + + "#address-cells": + const: 1 + + "#size-cells": + const: 0 + + "#io-channel-cells": + const: 1 + +required: + - compatible + - reg + +patternProperties: + "^channel@[0-7]$": + type: object + description: Child node to describe a channel + properties: + reg: + maxItems: 1 + + adi,mode: + $ref: /schemas/types.yaml#/definitions/uint32 + minimum: 0 + maximum: 6 + description: | + 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: + $ref: /schemas/types.yaml#/definitions/flag + description: + Set if the hardware has an external current sense resistor + + adi,enable-voltage-overrange: + $ref: /schemas/types.yaml#/definitions/flag + description: Enable voltage overrange + + adi,slew: + $ref: /schemas/types.yaml#/definitions/uint32-array + description: | + 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 update frequency + 3: Slew step size + items: + - enum: [0, 1] + - enum: [64000, 32000, 16000, 8000, 4000, 2000, 1000, 500, 250, 125, 64, 32, 16, 8, 4, 0] + - enum: [1, 2, 4, 16, 32, 64, 128, 256] + + required: + - reg + + additionalProperties: false + +oneOf: + - required: + - spi-cpha + - required: + - spi-cpol + +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false + +examples: + - | + spi { + #address-cells = <1>; + #size-cells = <0>; + + 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>; + }; + }; + }; +... |