ingenic,adc.yaml

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    1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
    2 # Copyright 2019-2020 Artur Rojek
    3 %YAML 1.2
    4 ---
    5 $id: "http://devicetree.org/schemas/iio/adc/ingenic,adc.yaml#"
    6 $schema: "http://devicetree.org/meta-schemas/core.yaml#"
    7 
    8 title: Ingenic JZ47xx ADC controller IIO bindings
    9 
   10 maintainers:
   11   - Artur Rojek <contact@artur-rojek.eu>
   12 
   13 description: >
   14   Industrial I/O subsystem bindings for ADC controller found in
   15   Ingenic JZ47xx SoCs.
   16 
   17   ADC clients must use the format described in
   18   https://github.com/devicetree-org/dt-schema/blob/master/schemas/iio/iio-consumer.yaml,
   19   giving a phandle and IIO specifier pair ("io-channels") to the ADC controller.
   20 
   21 properties:
   22   compatible:
   23     enum:
   24       - ingenic,jz4725b-adc
   25       - ingenic,jz4740-adc
   26       - ingenic,jz4760-adc
   27       - ingenic,jz4760b-adc
   28       - ingenic,jz4770-adc
   29 
   30   '#io-channel-cells':
   31     const: 1
   32     description:
   33       Must be set to <1> to indicate channels are selected by index.
   34 
   35   reg:
   36     maxItems: 1
   37 
   38   clocks:
   39     maxItems: 1
   40 
   41   clock-names:
   42     items:
   43       - const: adc
   44 
   45   interrupts:
   46     maxItems: 1
   47 
   48   ingenic,use-internal-divider:
   49     description:
   50       If present, battery voltage is read from the VBAT_IR pin, which has an
   51       internal 1/4 divider. If absent, it is read through the VBAT_ER pin,
   52       which does not have such a divider.
   53     type: boolean
   54 
   55 if:
   56   not:
   57     properties:
   58       compatible:
   59         contains:
   60           const: ingenic,jz4760b-adc
   61 then:
   62   properties:
   63     ingenic,use-internal-divider: false
   64 
   65 required:
   66   - compatible
   67   - '#io-channel-cells'
   68   - reg
   69   - clocks
   70   - clock-names
   71   - interrupts
   72 
   73 additionalProperties: false
   74 
   75 examples:
   76   - |
   77     #include <dt-bindings/clock/ingenic,jz4740-cgu.h>
   78     #include <dt-bindings/iio/adc/ingenic,adc.h>
   79 
   80     adc@10070000 {
   81             compatible = "ingenic,jz4740-adc";
   82             #io-channel-cells = <1>;
   83 
   84             reg = <0x10070000 0x30>;
   85 
   86             clocks = <&cgu JZ4740_CLK_ADC>;
   87             clock-names = "adc";
   88 
   89             interrupt-parent = <&intc>;
   90             interrupts = <18>;
   91     };

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