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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>;
- };
-};
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+# 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
+
+ spi-max-frequency: 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:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ enum: [0, 1, 2, 3]
+ description: |
+ Valid values for DC DC Phase control is:
+ 0: All dc-to-dc converters clock on the same edge.
+ 1: Channel A and Channel B clock on the same edge,
+ Channel C and Channel D clock on opposite edges.
+ 2: Channel A and Channel C clock on the same edge,
+ Channel B and Channel D clock on opposite edges.
+ 3: Channel A, Channel B, Channel C, and Channel D
+ clock 90 degrees out of phase from each other.
+
+ adi,dc-dc-freq-hz:
+ enum: [250000, 410000, 650000]
+
+ adi,dc-dc-max-microvolt:
+ description:
+ Maximum allowed Vboost voltage supplied by the dc-to-dc converter.
+ enum: [23000000, 24500000, 27000000, 29500000]
+
+ "#address-cells":
+ const: 1
+
+ "#size-cells":
+ const: 0
+
+ "#io-channel-cells":
+ const: 1
+
+required:
+ - compatible
+ - reg
+
+additionalProperties: false
+
+patternProperties:
+ "^channel@[0-7]$":
+ 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
+
+examples:
+ - |
+ #include <dt-bindings/iio/adi,ad5592r.h>
+ 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>;
+ };
+ };
+ };
+...