diff options
Diffstat (limited to 'Documentation/devicetree/bindings/iio/dac')
4 files changed, 190 insertions, 2 deletions
diff --git a/Documentation/devicetree/bindings/iio/dac/ad5755.txt b/Documentation/devicetree/bindings/iio/dac/ad5755.txt index f0bbd7e1029b..502e1e55adbd 100644 --- a/Documentation/devicetree/bindings/iio/dac/ad5755.txt +++ b/Documentation/devicetree/bindings/iio/dac/ad5755.txt @@ -1,4 +1,4 @@ -* Analog Device AD5755 IIO Multi-Channel DAC Linux Driver +* Analog Devices AD5755 IIO Multi-Channel DAC Linux Driver Required properties: - compatible: Has to contain one of the following: diff --git a/Documentation/devicetree/bindings/iio/dac/adi,ad5770r.yaml b/Documentation/devicetree/bindings/iio/dac/adi,ad5770r.yaml new file mode 100644 index 000000000000..58d81ca43460 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/dac/adi,ad5770r.yaml @@ -0,0 +1,180 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +# Copyright 2020 Analog Devices Inc. +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iio/dac/adi,ad5770r.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Analog Devices AD5770R DAC device driver + +maintainers: + - Mircea Caprioru <mircea.caprioru@analog.com> + +description: | + Bindings for the Analog Devices AD5770R current DAC device. Datasheet can be + found here: + https://www.analog.com/media/en/technical-documentation/data-sheets/AD5770R.pdf + +properties: + compatible: + enum: + - adi,ad5770r + + reg: + maxItems: 1 + + avdd-supply: + description: + AVdd voltage supply. Represents two different supplies in the datasheet + that are in fact the same. + + iovdd-supply: + description: + Voltage supply for the chip interface. + + vref-supply: + description: Specify the voltage of the external reference used. + Available reference options are 1.25 V or 2.5 V. If no + external reference declared then the device will use the + internal reference of 1.25 V. + + adi,external-resistor: + description: Specify if an external 2.5k ohm resistor is used. If not + specified the device will use an internal 2.5k ohm resistor. + The precision resistor is used for reference current generation. + type: boolean + + reset-gpios: + description: GPIO spec for the RESET pin. If specified, it will be + asserted during driver probe. + maxItems: 1 + + channel@0: + description: Represents an external channel which are + connected to the DAC. Channel 0 can act both as a current + source and sink. + type: object + + properties: + reg: + description: This represents the channel number. + const: 0 + + adi,range-microamp: + description: Output range of the channel. + oneOf: + - items: + - const: 0 + - const: 300000 + - items: + - const: -60000 + - const: 0 + - items: + - const: -60000 + - const: 300000 + + channel@1: + description: Represents an external channel which are + connected to the DAC. + type: object + + properties: + reg: + description: This represents the channel number. + const: 1 + + adi,range-microamp: + description: Output range of the channel. + items: + - const: 0 + - enum: [ 140000, 250000 ] + + channel@2: + description: Represents an external channel which are + connected to the DAC. + type: object + + properties: + reg: + description: This represents the channel number. + const: 2 + + adi,range-microamp: + description: Output range of the channel. + items: + - const: 0 + - enum: [ 55000, 150000 ] + +patternProperties: + "^channel@([3-5])$": + type: object + description: Represents the external channels which are connected to the DAC. + properties: + reg: + description: This represents the channel number. + minimum: 3 + maximum: 5 + + adi,range-microamp: + description: Output range of the channel. + items: + - const: 0 + - enum: [ 45000, 100000 ] + +required: +- reg +- channel@0 +- channel@1 +- channel@2 +- channel@3 +- channel@4 +- channel@5 + +examples: + - | + spi { + #address-cells = <1>; + #size-cells = <0>; + + ad5770r@0 { + compatible = "adi,ad5770r"; + reg = <0>; + spi-max-frequency = <1000000>; + vref-supply = <&vref>; + adi,external-resistor; + reset-gpios = <&gpio 22 0>; + #address-cells = <1>; + #size-cells = <0>; + + channel@0 { + reg = <0>; + adi,range-microamp = <0 300000>; + }; + + channel@1 { + reg = <1>; + adi,range-microamp = <0 140000>; + }; + + channel@2 { + reg = <2>; + adi,range-microamp = <0 55000>; + }; + + channel@3 { + reg = <3>; + adi,range-microamp = <0 45000>; + }; + + channel@4 { + reg = <4>; + adi,range-microamp = <0 45000>; + }; + + channel@5 { + reg = <5>; + adi,range-microamp = <0 45000>; + }; + }; + }; +... diff --git a/Documentation/devicetree/bindings/iio/dac/lltc,ltc1660.yaml b/Documentation/devicetree/bindings/iio/dac/lltc,ltc1660.yaml index a285eaba7125..e51a585bd5a3 100644 --- a/Documentation/devicetree/bindings/iio/dac/lltc,ltc1660.yaml +++ b/Documentation/devicetree/bindings/iio/dac/lltc,ltc1660.yaml @@ -34,6 +34,8 @@ required: - reg - vref-supply +additionalProperties: false + examples: - | spi { diff --git a/Documentation/devicetree/bindings/iio/dac/ltc2632.txt b/Documentation/devicetree/bindings/iio/dac/ltc2632.txt index e0d5fea33031..338c3220f01a 100644 --- a/Documentation/devicetree/bindings/iio/dac/ltc2632.txt +++ b/Documentation/devicetree/bindings/iio/dac/ltc2632.txt @@ -1,4 +1,4 @@ -Linear Technology LTC2632 DAC device driver +Linear Technology LTC2632/2636 DAC Required properties: - compatible: Has to contain one of the following: @@ -8,6 +8,12 @@ Required properties: lltc,ltc2632-h12 lltc,ltc2632-h10 lltc,ltc2632-h8 + lltc,ltc2636-l12 + lltc,ltc2636-l10 + lltc,ltc2636-l8 + lltc,ltc2636-h12 + lltc,ltc2636-h10 + lltc,ltc2636-h8 Property rules described in Documentation/devicetree/bindings/spi/spi-bus.txt apply. In particular, "reg" and "spi-max-frequency" properties must be given. |