diff options
Diffstat (limited to 'Documentation/devicetree/bindings/iio/dac/ltc2632.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/iio/dac/ltc2632.txt | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/iio/dac/ltc2632.txt b/Documentation/devicetree/bindings/iio/dac/ltc2632.txt index eb911e5a8ab4..e0d5fea33031 100644 --- a/Documentation/devicetree/bindings/iio/dac/ltc2632.txt +++ b/Documentation/devicetree/bindings/iio/dac/ltc2632.txt @@ -12,12 +12,26 @@ Required properties: 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 */ }; }; |