Re: [PATCH V4 1/3] mmc: sdhci: add support for using external DMA devices

[Adrian Hunter]

On 11/12/18 11:12 AM, Chunyan Zhang wrote:
> Some standard SD host controllers can support both external dma
> controllers as well as ADMA/SDMA in which the SD host controller
> acts as DMA master. TI's omap controller is the case as an example.
> 
> Currently the generic SDHCI code supports ADMA/SDMA integrated in
> the host controller but does not have any support for external DMA
> controllers implemented using dmaengine, meaning that custom code is
> needed for any systems that use an external DMA controller with SDHCI.
> 
> Signed-off-by: Chunyan Zhang <zhang.chunyan@xxxxxxxxxx>

FYI, I am waiting on successful testing before reviewing these patches again.