Add the TI DAC8771 DT binding. Datasheet: http://www.ti.com/lit/ds/symlink/dac8771.pdf Signed-off-by: Dan Murphy <dmurphy@xxxxxx> CC: Rob Herring <robh+dt@xxxxxxxxxx> --- .../bindings/iio/dac/ti,dac8771.yaml | 89 +++++++++++++++++++ 1 file changed, 89 insertions(+) create mode 100644 Documentation/devicetree/bindings/iio/dac/ti,dac8771.yaml diff --git a/Documentation/devicetree/bindings/iio/dac/ti,dac8771.yaml b/Documentation/devicetree/bindings/iio/dac/ti,dac8771.yaml new file mode 100644 index 000000000000..6aba6789d36c --- /dev/null +++ b/Documentation/devicetree/bindings/iio/dac/ti,dac8771.yaml @@ -0,0 +1,89 @@ +# SPDX-License-Identifier: GPL-2.0 +# Copyright (C) 2019 Texas Instruments Incorporated +%YAML 1.2 +--- +$id: "http://devicetree.org/schemas/bindings/iio/dac/ti,dac8771.yaml#"; +$schema: "http://devicetree.org/meta-schemas/core.yaml#"; + +title: Texas Instruments DAC8771 + +maintainers: + - Dan Murphy <dmurphy@xxxxxx> + +description: | + The DAC8771 is a single channel, precision, fully integrated 16-bit digital + to analog converter (DAC) with adaptive power management, and is designed to + meet the requirements of industrial control applications. + + Specifications can be found at: + http://www.ti.com/lit/ds/symlink/dac8771.pdf + +properties: + compatible: + enum: + - ti,dac8771 + + reg: + maxItems: 1 + + reset-gpios: + description: | + GPIO used for hardware reset. + + loaddacs-gpios: + description: | + GPIO used to shift the data from the SPI FIFO to the processing engine. + + spi-max-frequency: + maximum: 25000000 + + vref-supply: + description: Phandle to the external reference voltage supply. + + ti,output-range: + description: Output range of the DAC + 0 - Voltage output 0 to +5 V (default) + 1 - Voltage output 0 to +10 V + 2 - Voltage output ±5 V + 3 - Voltage output ±10 V + 4 - Current output 3.5 mA to 23.5 mA + 5 - Current output 0 to 20 mA + 6 - Current output 0 to 24 mA + 7 - Current output ±24 mA + 8 - Voltage output 0 to +6 V + 9 - Voltage output 0 to +12 V + 10 - Voltage output ±6 V + 11 - Voltage output ±12 V + 12 - Current output 4 mA to 20 mA + allOf: + - $ref: /schemas/types.yaml#/definitions/uint8 + - enum: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12] + + interrupts: + description: IRQ line for the DAC + maxItems: 1 + +required: + - compatible + - reg + - vref-supply + +examples: + - | + #include <dt-bindings/gpio/gpio.h> + spi { + #address-cells = <1>; + #size-cells = <0>; + + dac@0 { + compatible = "ti,dac8771"; + reg = <0>; + spi-max-frequency = <25000000>; + vref-supply = <&ldo3_reg>; + ti,output-range = <2>; + interrupts = <16>; + interrupt-parent = <&gpio1>; + loaddacs-gpios = <&gpio1 17 GPIO_ACTIVE_LOW>; + reset-gpios = <&gpio1 27 GPIO_ACTIVE_LOW>; + }; + }; -- 2.23.0
