linux-kernel - Re: [PATCH v2 4/7] Documentation: dt: iio: stm32-adc: optional dma support

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Date:   Sat, 28 Jan 2017 18:39:58 +0000
From:   Jonathan Cameron <jic23@...nel.org>
To:     Fabrice Gasnier <fabrice.gasnier@...com>, linux@...linux.org.uk,
        robh+dt@...nel.org, linux-arm-kernel@...ts.infradead.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     linux-iio@...r.kernel.org, mark.rutland@....com,
        mcoquelin.stm32@...il.com, alexandre.torgue@...com,
        lars@...afoo.de, knaack.h@....de, pmeerw@...erw.net,
        benjamin.gaignard@...aro.org, benjamin.gaignard@...com
Subject: Re: [PATCH v2 4/7] Documentation: dt: iio: stm32-adc: optional dma
 support

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@...com>
> Acked-by: Rob Herring <robh@...nel.org>
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@...12000 {
>  		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...
>