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dt-bindings: iio: stm32-adc: add option to set resolution

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Add documentation for 'assigned-resolution-bits' dt optional property.

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Fabrice Gasnier 2017-03-31 14:32:37 +02:00 committed by Jonathan Cameron
parent 6a95d825f6
commit 021087309d
1 changed files with 4 additions and 0 deletions
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4
Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt
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@ -57,6 +57,9 @@ Optional properties:
- dmas: Phandle to dma channel for this ADC instance.
See ../../dma/dma.txt for details.
- dma-names: Must be "rx" when dmas property is being used.
- assigned-resolution-bits: Resolution (bits) to use for conversions. Must
match device available resolutions (e.g. can be 6, 8, 10 or 12 on stm32f4).
Default is maximum resolution if unset.
Example:
adc: adc@40012000 {
@ -84,6 +87,7 @@ Example:
st,adc-channels = <8>;
dmas = <&dma2 0 0 0x400 0x0>;
dma-names = "rx";
assigned-resolution-bits = <8>;
};
...
other adc child nodes follow...