1 # SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
2 # Copyright 2019 Marcus Folkesson <marcus.folkesson@gmail.com>
5 $id: http://devicetree.org/schemas/iio/adc/microchip,mcp3911.yaml#
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
8 title: Microchip MCP3911 Dual channel analog front end (ADC)
11 - Marcus Folkesson <marcus.folkesson@gmail.com>
12 - Kent Gustavsson <nedo80@gmail.com>
15 Bindings for the Microchip MCP3911 Dual channel ADC device. Datasheet can be
16 found here: https://ww1.microchip.com/downloads/en/DeviceDoc/20002286C.pdf
37 Phandle and clock identifier for external sampling clock.
38 If not specified, the internal crystal oscillator will be used.
42 description: IRQ line of the ADC
45 microchip,data-ready-hiz:
47 Data Ready Pin Inactive State Control
48 true = The DR pin state is high-impedance
49 false = The DR pin state is logic high
52 microchip,device-addr:
53 description: Device address when multiple MCP3911 chips are present on the same SPI bus.
54 $ref: /schemas/types.yaml#/definitions/uint32
60 Phandle to the external reference voltage supply.
61 If not specified, the internal voltage reference (1.2V) will be used.
68 - $ref: /schemas/spi/spi-peripheral-props.yaml#
70 unevaluatedProperties: false
79 compatible = "microchip,mcp3911";
81 interrupt-parent = <&gpio5>;
83 spi-max-frequency = <20000000>;
84 microchip,device-addr = <0>;
85 vref-supply = <&vref_reg>;