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Commit 122b5f45 authored by Fabrice Gasnier's avatar Fabrice Gasnier Committed by Jonathan Cameron
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Documentation: dt: iio: stm32-adc: optional dma support 



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

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 732f2dc4

Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt

+7 −0
Original line number Diff line number Diff line
@@ -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...