Re: [PATCH 1/1] spi: imx: support to set watermark level via DTS

[Mark Brown]

On Thu, Jan 05, 2017 at 03:10:15PM +0900, Jiada Wang wrote:

> Previously watermark level is configured to fifosize/2,
> DMA mode can be used only when transfer length can be divided
> by 'watermark level * bpw', which makes DMA mode not practical.

> This patch adds new DTS property 'dma-wml', user can configure
> DMA watermark level, by specify 'dma-wml' in corresponding ecspi
> node.

Doesn't this just move the problem around a bit - can we not have the
driver figure out a more sensible watermark for each transfer rather
than fixing one in the DT?

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