Commit 02108730 authored by Fabrice Gasnier's avatar Fabrice Gasnier Committed by Jonathan Cameron

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

Add documentation for 'assigned-resolution-bits' dt optional property.
Signed-off-by: default avatarFabrice Gasnier <fabrice.gasnier@st.com>
Acked-by: default avatarRob Herring <robh@kernel.org>
Signed-off-by: default avatarJonathan Cameron <jic23@kernel.org>
parent 6a95d825
...@@ -57,6 +57,9 @@ Optional properties: ...@@ -57,6 +57,9 @@ Optional properties:
- dmas: Phandle to dma channel for this ADC instance. - dmas: Phandle to dma channel for this ADC instance.
See ../../dma/dma.txt for details. See ../../dma/dma.txt for details.
- dma-names: Must be "rx" when dmas property is being used. - 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: Example:
adc: adc@40012000 { adc: adc@40012000 {
...@@ -84,6 +87,7 @@ Example: ...@@ -84,6 +87,7 @@ Example:
st,adc-channels = <8>; st,adc-channels = <8>;
dmas = <&dma2 0 0 0x400 0x0>; dmas = <&dma2 0 0 0x400 0x0>;
dma-names = "rx"; dma-names = "rx";
assigned-resolution-bits = <8>;
}; };
... ...
other adc child nodes follow... other adc child nodes follow...
......
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