linux-kernel - Re: [PATCH] ASoC: dwc: Add Single DMA mode support

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Message-ID: <ZP8Irf6g+sG6Ax9j@finisterre.sirena.org.uk>
Date:   Mon, 11 Sep 2023 13:31:41 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Myunguk Kim <mwkim@...nchips.com>
Cc:     alsa-devel@...a-project.org, Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Maxim Kochetkov <fido_max@...ox.ru>,
        Xingyu Wu <xingyu.wu@...rfivetech.com>,
        Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>,
        Uw e Kleine-König 
        <u.kleine-koenig@...gutronix.de>, linux-kernel@...r.kernel.org,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Jose Abreu <joabreu@...opsys.com>, devicetree@...r.kernel.org
Subject: Re: [PATCH] ASoC: dwc: Add Single DMA mode support

On Mon, Sep 11, 2023 at 11:40:23AM +0900, Myunguk Kim wrote:
> There is a SoC between dwc and DMA block (ie. PL330)
> that does not have a burst signal and supports only single.
> 
> So write not-support-burst property on dts, it support single DMA mode.

This feels like something we ought to be discovering from the DMA API
somehow, while it's not quite a property of the DMA controller (but
rather of the SoC integration) in this case it could be a property of
some DMA controller elsewhere and the whole process of finding and
figuring out the properties of the DMA controler is handled by the DMA
API.

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