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iio: ti-ads8688: Add DT binding documentation

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Adding binding documentation for Texas Instruments ADS8688 ADC.

Signed-off-by: Sean Nyekjaer <sean.nyekjaer@prevas.dk>
Reviewed-by: Martin Hundebøll <martin.hundeboll@prevas.dk>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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Sean Nyekjaer 2015-11-09 13:53:00 +01:00 committed by Jonathan Cameron
parent 3e87e78383
commit a151364189
1 changed files with 20 additions and 0 deletions
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Documentation/devicetree/bindings/iio/adc/ti-ads8688.txt Normal file
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* Texas Instruments' ADS8684 and ADS8688 ADC chip
Required properties:
- compatible: Should be "ti,ads8684" or "ti,ads8688"
- reg: spi chip select number for the device
Recommended properties:
- spi-max-frequency: Definition as per
Documentation/devicetree/bindings/spi/spi-bus.txt
Optional properties:
- vref-supply: The regulator supply for ADC reference voltage
Example:
adc@0 {
compatible = "ti,ads8688";
reg = <0>;
vref-supply = <&vdd_supply>;
spi-max-frequency = <1000000>;
};