microchip,mcp3911.yaml

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    1 # SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
    2 # Copyright 2019 Marcus Folkesson <marcus.folkesson@gmail.com>
    3 %YAML 1.2
    4 ---
    5 $id: "http://devicetree.org/schemas/iio/adc/microchip,mcp3911.yaml#"
    6 $schema: "http://devicetree.org/meta-schemas/core.yaml#"
    7 
    8 title: Microchip MCP3911 Dual channel analog front end (ADC)
    9 
   10 maintainers:
   11   - Marcus Folkesson <marcus.folkesson@gmail.com>
   12   - Kent Gustavsson <nedo80@gmail.com>
   13 
   14 description: |
   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
   17 
   18 properties:
   19   compatible:
   20     enum:
   21       - microchip,mcp3911
   22 
   23   reg:
   24     maxItems: 1
   25 
   26   spi-max-frequency:
   27     maximum: 20000000
   28 
   29   clocks:
   30     description: |
   31       Phandle and clock identifier for external sampling clock.
   32       If not specified, the internal crystal oscillator will be used.
   33     maxItems: 1
   34 
   35   interrupts:
   36     description: IRQ line of the ADC
   37     maxItems: 1
   38 
   39   microchip,device-addr:
   40     description: Device address when multiple MCP3911 chips are present on the same SPI bus.
   41     $ref: /schemas/types.yaml#/definitions/uint32
   42     enum: [0, 1, 2, 3]
   43     default: 0
   44 
   45   vref-supply:
   46     description: |
   47       Phandle to the external reference voltage supply.
   48       If not specified, the internal voltage reference (1.2V) will be used.
   49 
   50 required:
   51   - compatible
   52   - reg
   53 
   54 additionalProperties: false
   55 
   56 examples:
   57   - |
   58     spi {
   59       #address-cells = <1>;
   60       #size-cells = <0>;
   61 
   62       adc@0 {
   63         compatible = "microchip,mcp3911";
   64         reg = <0>;
   65         interrupt-parent = <&gpio5>;
   66         interrupts = <15 2>;
   67         spi-max-frequency = <20000000>;
   68         microchip,device-addr = <0>;
   69         vref-supply = <&vref_reg>;
   70         clocks = <&xtal>;
   71       };
   72     };

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sys/contrib/device-tree/Bindings/iio/adc/microchip,mcp3911.yaml