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Re: [PATCH 1/2] serial/imx: add DMA support



On Thursday 26 April 2012, Huang Shijie wrote:
> diff --git a/Documentation/devicetree/bindings/tty/serial/fsl-imx-uart.txt b/Documentation/devicetree/bindings/tty/serial/fsl-imx-uart.txt
> index a9c0406..f27489d 100644
> --- a/Documentation/devicetree/bindings/tty/serial/fsl-imx-uart.txt
> +++ b/Documentation/devicetree/bindings/tty/serial/fsl-imx-uart.txt
> @@ -8,6 +8,10 @@ Required properties:
>  Optional properties:
>  - fsl,uart-has-rtscts : Indicate the uart has rts and cts
>  - fsl,irda-mode : Indicate the uart supports irda mode
> +- fsl,enable-dma : Indicate the uart supports DMA
> +- fsl,uart-dma-events : contains the DMA events for RX and TX,
> +                 The first is the RX event, while the other is TX.
> +- fsl,enable-dte: Indicate the uart works in DTE mode
>  

I think we should not add any ad-hoc DMA bindings for device drivers
until we have a proper generic binding for DMA.

	Arnd

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