From 021087309d2801d6d94bbd6be7e3f8297edb3190 Mon Sep 17 00:00:00 2001 From: Fabrice Gasnier Date: Fri, 31 Mar 2017 14:32:37 +0200 Subject: [PATCH] dt-bindings: iio: stm32-adc: add option to set resolution Add documentation for 'assigned-resolution-bits' dt optional property. Signed-off-by: Fabrice Gasnier Acked-by: Rob Herring Signed-off-by: Jonathan Cameron --- Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt b/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt index 5dfc88ec24a4..e35f9f1b3200 100644 --- a/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt +++ b/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt @@ -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... -- 2.11.0