linux-kernel - Re: [PATCH v3] dmaengine: imx-sdma: Add FIFO stride support for multi FIFO script

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Message-ID: <YsW4YHL9+HkQndva@matsya>
Date:   Wed, 6 Jul 2022 21:59:20 +0530
From:   Vinod Koul <vkoul@...nel.org>
To:     Shengjiu Wang <shengjiu.wang@...il.com>
Cc:     Shengjiu Wang <shengjiu.wang@....com>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Sascha Hauer <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>, joy.zou@....com,
        NXP Linux Team <linux-imx@....com>,
        dmaengine@...r.kernel.org,
        "moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" 
        <linux-arm-kernel@...ts.infradead.org>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3] dmaengine: imx-sdma: Add FIFO stride support for
 multi FIFO script

On 06-07-22, 14:54, Shengjiu Wang wrote:
> On Wed, Jul 6, 2022 at 2:00 PM Vinod Koul <vkoul@...nel.org> wrote:
> 
> > On 21-06-22, 11:36, Shengjiu Wang wrote:
> > > The peripheral may have several FIFOs, but some case just select
> > > some FIFOs from them for data transfer, which means FIFO0 and FIFO2
> > > may be selected. So add FIFO address stride support, 0 means all FIFOs
> > > are continuous, 1 means 1 word stride between FIFOs. All stride between
> > > FIFOs should be same.
> > >
> > > Another option words_per_fifo means how many audio channel data copied
> > > to one FIFO one time, 1 means one channel per FIFO, 2 means 2 channels
> > > per FIFO.
> > >
> > > If 'n_fifos_src =  4' and 'words_per_fifo = 2', it means the first two
> > > words(channels) fetch from FIFO0 and then jump to FIFO1 for next two
> > words,
> > > and so on after the last FIFO3 fetched, roll back to FIFO0.
> >
> > this fails to apply for me, pls rebase on dmaengine/next and revise
> >
> >
> > it based on my another commit, the one that fixes the struct documentation
> should I send them together?

Pls mention that in patch title.. I have applied that, so rebase and
resend please

-- 
~Vinod