[alsa-devel] [PATCH RFC 3/8] ASoC: davinci-mcasp: Get DMA related properties from DT

Mark Brown broonie at kernel.org
Thu Sep 12 13:08:00 CEST 2013


On Wed, Sep 11, 2013 at 02:48:19PM +0300, Jyri Sarha wrote:

> I have not studied the code enough to give a good work estimate about
> the conversion, but at least the current EDMA driver would need cyclic
> mode to be implemented before the conversion would be possible. It may

The other option is to support non-cyclic mode in the generic code.

> However, after taking a another look at the added DT bindings, I think
> we could survive with mcasp dma register addresses only for now. To my
> understanding those are anyway need in mcasp node. In DT boot the
> mcasp EDMA event queue could be hardcoded to the highest priority for
> now.

> How does this sound?

I'm not clear what that means in concrete terms, sorry.  Do you mean you
can just use the existing register ranges for the McASP?  Please bear in
mind that I don't really know anything about this hardware.
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