Documentation/devicetree/bindings/iio/dac/ltc2632.txt

   1 Linear Technology LTC2632/2636 DAC
   2
   3 Required properties:
   4  - compatible: Has to contain one of the following:
   5         lltc,ltc2632-l12
   6         lltc,ltc2632-l10
   7         lltc,ltc2632-l8
   8         lltc,ltc2632-h12
   9         lltc,ltc2632-h10
  10         lltc,ltc2632-h8
  11         lltc,ltc2636-l12
  12         lltc,ltc2636-l10
  13         lltc,ltc2636-l8
  14         lltc,ltc2636-h12
  15         lltc,ltc2636-h10
  16         lltc,ltc2636-h8
  17
  18 Property rules described in Documentation/devicetree/bindings/spi/spi-bus.txt
  19 apply. In particular, "reg" and "spi-max-frequency" properties must be given.
  20
  21 Optional properties:
  22         - vref-supply: Phandle to the external reference voltage supply. This should
  23           only be set if there is an external reference voltage connected to the VREF
  24           pin. If the property is not set the internal reference is used.
  25
  26 Example:
  27
  28         vref: regulator-vref {
  29                 compatible = "regulator-fixed";
  30                 regulator-name = "vref-ltc2632";
  31                 regulator-min-microvolt = <1250000>;
  32                 regulator-max-microvolt = <1250000>;
  33                 regulator-always-on;
  34         };
  35
  36         spi_master {
  37                 dac: ltc2632@0 {
  38                         compatible = "lltc,ltc2632-l12";
  39                         reg = <0>; /* CS0 */
  40                         spi-max-frequency = <1000000>;
  41                         vref-supply = <&vref>; /* optional */
  42                 };
  43         };