linux-kernel - Re: [PATCH 1/7] dmaengine: st_fdma: Add STMicroelectronics FDMA DT binding documentation

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Date:	Wed, 19 Aug 2015 20:36:05 +0530
From:	Vinod Koul <vinod.koul@...el.com>
To:	Peter Griffin <peter.griffin@...aro.org>
Cc:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	srinivas.kandagatla@...il.com, maxime.coquelin@...com,
	patrice.chotard@...com, dan.j.williams@...el.com,
	lee.jones@...aro.org, devicetree@...r.kernel.org,
	dmaengine@...r.kernel.org, ludovic.barre@...com
Subject: Re: [PATCH 1/7] dmaengine: st_fdma: Add STMicroelectronics FDMA DT
 binding documentation

On Wed, Jul 08, 2015 at 05:11:22PM +0100, Peter Griffin wrote:
> This patch adds the DT binding documentation for the FDMA constroller
> found on STi based chipsets from STMicroelectronics.
> 
> Signed-off-by: Ludovic Barre <ludovic.barre@...com>
> Signed-off-by: Peter Griffin <peter.griffin@...aro.org>
> ---
>  Documentation/devicetree/bindings/dma/st_fdma.txt | 76 +++++++++++++++++++++++
>  1 file changed, 76 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/dma/st_fdma.txt
> 
> diff --git a/Documentation/devicetree/bindings/dma/st_fdma.txt b/Documentation/devicetree/bindings/dma/st_fdma.txt
> new file mode 100644
> index 0000000..1ec7470
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/dma/st_fdma.txt
> @@ -0,0 +1,76 @@
> +* STMicroelectronics Flexible Direct Memory Access Device Tree bindings
> +
> +The FDMA is a general-purpose direct memory access controller capable of
> +supporting 16 independent DMA channels. It accepts up to 32 DMA requests.
> +The FDMA is based on a Slim processor which require a firmware.
> +
> +* FDMA Controller
> +
> +Required properties:
> +- compatible	: Should be "st,fdma_mpe31"
> +- reg		: Should contain DMA registers location and length
> +- interrupts	: Should contain one interrupt shared by all channel

s/channel/channels

> +- dma-channels	: Number of channels supported by the controller
> +- #dma-cells	: Must be <3>.

any reason three?

-- 
~Vinod

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