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SubjectRe: [PATCH v2 1/2] ARM: imx: Add the secondary request into the structure for imx-sdma
On Thu, Jul 24, 2014 at 04:35:28PM +0800, Nicolin Chen wrote:
> SDMA supports device to device (per_2_per) scripts to handle DMA transfering
> between two peripheral devices. The per_2_per script, however, needs two dma
> requests from two sides while the current structure only defined one request.
> So this patch just simply adds the secondary request so as to let SDMA and
> its user to add its implementation later.
> [ Both change in the SDMA driver and its users like Freescale ASRC ASoC driver
> should be taken along with this change in order to truly support per_2_per
> sciprts. However, we here make an expediency by adding this first so that
> we can add either side later since this patch won't break any function and
> meanwhile it can make merge window more smoothly: we don't need to apply the
> change inside dmaengine branch via ASoC tree any more. -- Nicolin ]
> Signed-off-by: Nicolin Chen <>

Acked-by: Shawn Guo <>

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