From: Shengjiu Wang <shengjiu.wang@gmail.com>
To: Mark Brown <broonie@kernel.org>
Cc: Shengjiu Wang <shengjiu.wang@nxp.com>,
"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS"
<devicetree@vger.kernel.org>,
Linux-ALSA <alsa-devel@alsa-project.org>,
Timur Tabi <timur@kernel.org>, Xiubo Li <Xiubo.Lee@gmail.com>,
Liam Girdwood <lgirdwood@gmail.com>,
linuxppc-dev@lists.ozlabs.org, Takashi Iwai <tiwai@suse.com>,
Nicolin Chen <nicoleotsuka@gmail.com>,
Rob Herring <robh+dt@kernel.org>,
Fabio Estevam <festevam@gmail.com>,
linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 2/3] ASoC: fsl_esai: Add support for imx8qm
Date: Fri, 15 May 2020 18:01:57 +0800 [thread overview]
Message-ID: <CAA+D8ANTv3R-vDki3No0rG++u4OKrNFGh_Eq3DNLSAQ4f=mLwQ@mail.gmail.com> (raw)
In-Reply-To: <20200512123801.GG5110@sirena.org.uk>
On Tue, May 12, 2020 at 8:38 PM Mark Brown <broonie@kernel.org> wrote:
>
> On Tue, May 12, 2020 at 10:48:41AM +0800, Shengjiu Wang wrote:
> > On Wed, May 6, 2020 at 10:33 AM Shengjiu Wang <shengjiu.wang@gmail.com> wrote:
> > > On Fri, May 1, 2020 at 6:23 PM Mark Brown <broonie@kernel.org> wrote:
>
> > > > > 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?
>
> Not off-hand, you'd probably need to extend the API to export the
> information.
Thanks. I will think about if I can find a better solution.
And I will drop this change and send v2 of this patch-set.
next prev parent reply other threads:[~2020-05-15 10:02 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-01 8:12 [PATCH 0/3] ASoC: fsl_esai: Add support for imx8qm Shengjiu Wang
2020-05-01 8:12 ` [PATCH 1/3] ASoC: fsl_esai: introduce SoC specific data Shengjiu Wang
2020-05-04 21:39 ` Nicolin Chen
2020-05-01 8:12 ` [PATCH 2/3] ASoC: fsl_esai: Add support for imx8qm Shengjiu Wang
2020-05-01 10:21 ` Mark Brown
2020-05-06 2:33 ` Shengjiu Wang
2020-05-12 2:48 ` Shengjiu Wang
2020-05-12 12:38 ` Mark Brown
2020-05-15 10:01 ` Shengjiu Wang [this message]
2020-05-01 8:12 ` [PATCH 3/3] ASoC: fsl_esai: Add new compatible string " Shengjiu Wang
2020-05-12 16:38 ` Rob Herring
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