On 26/01/17 14:28, Fabrice Gasnier wrote:
> STM32 ADC can use dma. Add dt documentation for optional dma support.
>
> Signed-off-by: Fabrice Gasnier <fabrice.gasnier@xxxxxx>
> Acked-by: Rob Herring <robh@xxxxxxxxxx>
Applied.
> ---
> Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt | 7 +++++++
> 1 file changed, 7 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt b/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt
> index 49ed82e..5dfc88e 100644
> --- a/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt
> +++ b/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt
> @@ -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...
>
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