Documentation/devicetree/bindings/iio/dac/lltc,ltc2632.yaml

   1 # SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
   2 %YAML 1.2
   3 ---
   4 $id: "http://devicetree.org/schemas/iio/dac/lltc,ltc2632.yaml#"
   5 $schema: "http://devicetree.org/meta-schemas/core.yaml#"
   6
   7 title: Linear Technology LTC263x 12-/10-/8-Bit Rail-to-Rail DAC
   8
   9 maintainers:
  10   - Michael Hennerich <michael.hennerich@analog.com>
  11
  12 description: |
  13   Bindings for the Linear Technology LTC2632/2634/2636 DAC
  14   Datasheet can be found here: https://www.analog.com/media/en/technical-documentation/data-sheets/LTC263[246].pdf
  15
  16 properties:
  17   compatible:
  18     enum:
  19       - lltc,ltc2632-l12
  20       - lltc,ltc2632-l10
  21       - lltc,ltc2632-l8
  22       - lltc,ltc2632-h12
  23       - lltc,ltc2632-h10
  24       - lltc,ltc2632-h8
  25       - lltc,ltc2634-l12
  26       - lltc,ltc2634-l10
  27       - lltc,ltc2634-l8
  28       - lltc,ltc2634-h12
  29       - lltc,ltc2634-h10
  30       - lltc,ltc2634-h8
  31       - lltc,ltc2636-l12
  32       - lltc,ltc2636-l10
  33       - lltc,ltc2636-l8
  34       - lltc,ltc2636-h12
  35       - lltc,ltc2636-h10
  36       - lltc,ltc2636-h8
  37
  38   reg:
  39     maxItems: 1
  40
  41   spi-max-frequency:
  42     maximum: 2000000
  43
  44   vref-supply:
  45     description:
  46       Phandle to the external reference voltage supply. This should
  47       only be set if there is an external reference voltage connected to the VREF
  48       pin. If the property is not set the internal reference is used.
  49
  50 required:
  51   - compatible
  52   - reg
  53
  54 additionalProperties: false
  55
  56 examples:
  57   - |
  58     vref: regulator-vref {
  59         compatible = "regulator-fixed";
  60         regulator-name = "vref-ltc2632";
  61         regulator-min-microvolt = <1250000>;
  62         regulator-max-microvolt = <1250000>;
  63         regulator-always-on;
  64     };
  65
  66     spi {
  67       #address-cells = <1>;
  68       #size-cells = <0>;
  69
  70       dac@0 {
  71         compatible = "lltc,ltc2632";
  72         reg = <0>;    /* CS0 */
  73         spi-max-frequency = <1000000>;
  74         vref-supply = <&vref>;
  75       };
  76     };
  77 ...