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Linear Technology LTC2632 DAC device driver
Required properties:
- compatible: Has to contain one of the following:
lltc,ltc2632-l12
lltc,ltc2632-l10
lltc,ltc2632-l8
lltc,ltc2632-h12
lltc,ltc2632-h10
lltc,ltc2632-h8
Property rules described in Documentation/devicetree/bindings/spi/spi-bus.txt
apply. In particular, "reg" and "spi-max-frequency" properties must be given.
Optional properties:
- vref-supply: Phandle to the external reference voltage supply. This should
only be set if there is an external reference voltage connected to the VREF
pin. If the property is not set the internal reference is used.
Example:
vref: regulator-vref {
compatible = "regulator-fixed";
regulator-name = "vref-ltc2632";
regulator-min-microvolt = <1250000>;
regulator-max-microvolt = <1250000>;
regulator-always-on;
};
spi_master {
dac: ltc2632@0 {
compatible = "lltc,ltc2632-l12";
reg = <0>; /* CS0 */
spi-max-frequency = <1000000>;
vref-supply = <&vref>; /* optional */
};
};