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dt-bindings: iio: dac: ti-dac082s085: Document new driver

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Add device tree bindings for Texas Instruments 8/10/12-bit 2/4-channel
DAC driver.

Cc: Mathias Duckeck <m.duckeck@kunbus.de>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Lukas Wunner 2017-10-17 12:42:00 +02:00 committed by Jonathan Cameron
parent 0d87a4aa37
commit 930cc2d278
1 changed files with 34 additions and 0 deletions
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34
Documentation/devicetree/bindings/iio/dac/ti-dac082s085.txt Normal file
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Texas Instruments 8/10/12-bit 2/4-channel DAC driver
Required properties:
- compatible: Must be one of:
"ti,dac082s085"
"ti,dac102s085"
"ti,dac122s085"
"ti,dac084s085"
"ti,dac104s085"
"ti,dac124s085"
- reg: Chip select number.
- spi-cpha, spi-cpol: SPI mode (0,1) or (1,0) must be used, so specify
either spi-cpha or spi-cpol (but not both).
- vref-supply: Phandle to the external reference voltage supply.
For other required and optional properties of SPI slave nodes please refer to
../../spi/spi-bus.txt.
Example:
vref_2v5_reg: regulator-vref {
compatible = "regulator-fixed";
regulator-name = "2v5";
regulator-min-microvolt = <2500000>;
regulator-max-microvolt = <2500000>;
regulator-always-on;
};
dac@0 {
compatible = "ti,dac082s085";
reg = <0>;
spi-max-frequency = <40000000>;
spi-cpol;
vref-supply = <&vref_2v5_reg>;
};