Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
Date:   15 Oct 2019 10:18:41 +0900
Message-ID: <87mue26c26.wl-kuninori.morimoto.gx@renesas.com>
From:   Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
To:     Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Cc:     Mark Brown <broonie@kernel.org>,
        Devicetree List <devicetree@vger.kernel.org>,
        Daniel Baluta <daniel.baluta@gmail.com>,
        Linux-ALSA <alsa-devel@alsa-project.org>,
        Takashi Iwai <tiwai@suse.com>,
        Liam Girdwood <lgirdwood@gmail.com>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Rob Herring <robh+dt@kernel.org>,
        Jerome Laclavere <jerome.laclavere@nxp.com>,
        dl-linux-imx <linux-imx@nxp.com>,
        Daniel Baluta <daniel.baluta@nxp.com>,
        Guido Roncarolo <guido.roncarolo@nxp.com>
Subject: Re: [alsa-devel] [RFC PATCH 2/2] ASoC: simple-card: Add        documentation for force-dpcm property
In-Reply-To: <87pniy6cso.wl-kuninori.morimoto.gx@renesas.com>
References: <20191013190014.32138-1-daniel.baluta@nxp.com>
        <20191013190014.32138-3-daniel.baluta@nxp.com>
        <20191014115635.GB4826@sirena.co.uk>
        <CAEnQRZDbXZUhix_aR_DCUzFn1NYz1Zh7MxW5uwnuycps9PNohw@mail.gmail.com>
        <20191014161054.GD4826@sirena.co.uk>
        <87pniy6cso.wl-kuninori.morimoto.gx@renesas.com>
User-Agent: Wanderlust/2.15.9 Emacs/24.5 Mule/6.0
MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue")
Content-Type: text/plain; charset=US-ASCII
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk


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