Re: [PATCH 2/3] ASoC: fsl_esai: Add support for imx8qm

[Shengjiu Wang]

Hi Mark, Nicolin

On Wed, May 6, 2020 at 10:33 AM Shengjiu Wang <shengjiu.wang@xxxxxxxxx> wrote:
>
> Hi
>
> On Fri, May 1, 2020 at 6:23 PM Mark Brown <broonie@xxxxxxxxxx> wrote:
> >
> > On Fri, May 01, 2020 at 04:12:05PM +0800, Shengjiu Wang wrote:
> > > The difference for esai on imx8qm is that DMA device is EDMA.
> > >
> > > EDMA requires the period size to be multiple of maxburst. Otherwise
> > > the remaining bytes are not transferred and thus noise is produced.
> >
> > If this constraint comes from the DMA controller then normally you'd
> > expect the DMA controller integration to be enforcing this - is there no
> > information in the DMA API that lets us know that this constraint is
> > there?
>
> No, I can't find one API for this.
> Do you have a recommendation?
>
could you please recommend which DMA API can I use?

best regards
wang shengjiu