linux-kernel - Re: [alsa-devel] [RFC PATCH 2/2] ASoC: simple-card: Add documentation for force-dpcm property

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Date:   15 Oct 2019 10:18:41 +0900
From:   Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>
To:     Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>
Cc:     Mark Brown <broonie@...nel.org>,
        Devicetree List <devicetree@...r.kernel.org>,
        Daniel Baluta <daniel.baluta@...il.com>,
        Linux-ALSA <alsa-devel@...a-project.org>,
        Takashi Iwai <tiwai@...e.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Jerome Laclavere <jerome.laclavere@....com>,
        dl-linux-imx <linux-imx@....com>,
        Daniel Baluta <daniel.baluta@....com>,
        Guido Roncarolo <guido.roncarolo@....com>
Subject: Re: [alsa-devel] [RFC PATCH 2/2] ASoC: simple-card: Add        documentation for force-dpcm property


Hi

> > > > DPCM is an implementation detail of Linux (and one that we want to phase
> > > > out going forwards too), we shouldn't be putting it in the DT bindings
> > > > where it becomes an ABI.
> > 
> > > I see your point. This is way I marked the patch series as RFC. I need to find
> > > another way to reuse simple-card as machine driver for SOF.
> > 
> > Have a look at the way the Renesas systems are using this and the audio
> > graph card - they have DPCM.
> 
> Indeed we (= Renesas) are using this as DPCM, but unfortunately
> it is not upstreamed. Using local patch.

I mean DT part.

Thank you for your help !!
Best regards
---
Kuninori Morimoto