Re: [PATCH 2/3] spi: mediatek: Add spi bus for Mediatek MT8173

[Mark Brown]

On Fri, May 15, 2015 at 03:38:42PM +0800, leilk liu wrote:
> On Tue, 2015-05-12 at 17:05 +0100, Mark Brown wrote:

> > Implement can_dma() - look for drivers providing that for examples.

> MTK spi hardware uses the dmaengine in spi controller. According to
> datasheet, spi driver just need to enable dma register bit and write a
> physical address to relevant dma address register, so I think it may be
> complex while the driver supports can_dma.

That's how a very large proportion of devices that work with DMA are
done - why would this be complicated?  All can_dma() does is report if
DMA is possible.

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