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dt-bindings:iio:adc:adc.txt: Add documentation for channel label attribute 

Optional attribute for better identification of the channels.

Signed-off-by: Cristian Pop <cristian.pop@analog.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20200928090959.88842-5-cristian.pop@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Cristian Pop 2020-09-28 12:09:59 +03:00 committed by Jonathan Cameron
parent 7d4156ddf1
commit 7f79711533
1 changed files with 6 additions and 0 deletions
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Documentation/devicetree/bindings/iio/adc/adc.txt
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@ -5,18 +5,24 @@ Optional properties for child nodes:
- diff-channels : Differential channels muxed for this ADC. The first value - diff-channels : Differential channels muxed for this ADC. The first value
specifies the positive input pin, the second value the negative specifies the positive input pin, the second value the negative
input pin. input pin.
- reg: The channel number.
- label: Unique name to identify which channel this is.
Example: Example:
adc@0 { adc@0 {
compatible = "some,adc"; compatible = "some,adc";
... ...
channel@0 { channel@0 {
reg = <0>;
label = "channel_0_name";
bipolar; bipolar;
diff-channels = <0 1>; diff-channels = <0 1>;
... ...
}; };
channel@1 { channel@1 {
reg = <1>;
label = "channel_1_name";
diff-channels = <2 3>; diff-channels = <2 3>;
... ...
}; };