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Documentation: dt: iio: stm32-adc: optional dma support

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STM32 ADC can use dma. Add dt documentation for optional dma support.

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 2017-01-26 15:28:32 +01:00 committed by Jonathan Cameron
parent 732f2dc468
commit 122b5f4580
1 changed files with 7 additions and 0 deletions
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7
Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt
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@ -53,6 +53,11 @@ Required properties:
- #io-channel-cells = <1>: See the IIO bindings section "IIO consumers" in
Documentation/devicetree/bindings/iio/iio-bindings.txt
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.
Example:
adc: adc@40012000 {
compatible = "st,stm32f4-adc-core";
@ -77,6 +82,8 @@ Example:
interrupt-parent = <&adc>;
interrupts = <0>;
st,adc-channels = <8>;
dmas = <&dma2 0 0 0x400 0x0>;
dma-names = "rx";
};
...
other adc child nodes follow...