adi,ad7280a.yaml

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    1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
    2 %YAML 1.2
    3 ---
    4 $id: http://devicetree.org/schemas/iio/adc/adi,ad7280a.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: Analog Devices AD7280a Lithium Ion Battery Monitoring System
    8 
    9 maintainers:
   10   - Michael Hennerich <michael.hennerich@analog.com>
   11   - Jonathan Cameron <jic23@kernel.org>
   12 
   13 description: |
   14   Bindings for the Analog Devices AD7280a Battery Monitoring System.
   15   Used in devices such as hybrid electric cars, battery backup and power tools.
   16   Multiple chips can be daisy chained and accessed via a single SPI interface.
   17   Data sheet found here:
   18     https://www.analog.com/media/en/technical-documentation/data-sheets/AD7280A.pdf
   19 
   20 properties:
   21   compatible:
   22     const: adi,ad7280a
   23 
   24   reg:
   25     maxItems: 1
   26 
   27   interrupts:
   28     description: IRQ line for the ADC
   29     maxItems: 1
   30 
   31   spi-max-frequency: true
   32 
   33   adi,voltage-alert-last-chan:
   34     $ref: /schemas/types.yaml#/definitions/uint32
   35     description:
   36       Allows limiting of scope of which channels are considered for voltage
   37       alerts, typically because not all are wired to anything. Only applies to
   38       last device in the daisy chain.
   39     default: 5
   40     enum: [3, 4, 5]
   41 
   42   adi,acquisition-time-ns:
   43     description:
   44       Additional time may be needed to charge the sampling capacitors depending
   45       on external writing.
   46     default: 400
   47     enum: [400, 800, 1200, 1600]
   48 
   49   adi,thermistor-termination:
   50     type: boolean
   51     description:
   52       Enable the thermistor termination function.
   53 
   54 required:
   55   - compatible
   56   - reg
   57 
   58 additionalProperties: false
   59 
   60 examples:
   61   - |
   62     spi {
   63       #address-cells = <1>;
   64       #size-cells = <0>;
   65 
   66       adc@0 {
   67         compatible = "adi,ad7280a";
   68         reg = <0>;
   69         spi-max-frequency = <700000>;
   70         interrupt-parent = <&gpio>;
   71         interrupts = <25 2>;
   72         adi,thermistor-termination;
   73         adi,acquisition-time-ns = <800>;
   74         adi,voltage-alert-last-chan = <5>;
   75       };
   76     };
   77 ...

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sys/contrib/device-tree/Bindings/iio/adc/adi,ad7280a.yaml