linux-kernel - Re: [PATCH v3 7/7] ASoC: dt-bindings: imx-rpmsg: Add binding doc for rpmsg machine driver

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Message-ID: <CAA+D8APUVqyRRPc4GDwJqQEcnEPLxQMcZ+VhkbbrOx7hQs1jSA@mail.gmail.com>
Date:   Mon, 8 Mar 2021 21:16:16 +0800
From:   Shengjiu Wang <shengjiu.wang@...il.com>
To:     Rob Herring <robh@...nel.org>
Cc:     Shengjiu Wang <shengjiu.wang@....com>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>, alsa-devel@...a-project.org,
        Timur Tabi <timur@...nel.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        linuxppc-dev <linuxppc-dev@...ts.ozlabs.org>,
        Xiubo Li <Xiubo.Lee@...il.com>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Takashi Iwai <tiwai@...e.com>,
        Nicolin Chen <nicoleotsuka@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Fabio Estevam <festevam@...il.com>
Subject: Re: [PATCH v3 7/7] ASoC: dt-bindings: imx-rpmsg: Add binding doc for
 rpmsg machine driver

On Sun, Mar 7, 2021 at 4:37 AM Rob Herring <robh@...nel.org> wrote:
>
> On Thu, Feb 25, 2021 at 10:52:43AM +0800, Shengjiu Wang wrote:
> > Imx-rpmsg is a new added machine driver for supporting audio on Cortex-M
> > core. The Cortex-M core will control the audio interface, DMA and audio
> > codec, setup the pipeline, the audio driver on Cortex-A core side is just
> > to communitcate with M core, it is a virtual sound card and don't touch
> > the hardware.
>
> This sounds like 1 h/w block (the interface to the cortex-M), your DT
> should be 1 node. If you need 2 drivers to satisfy the needs of the OS,
> then instantiate one device from the other device's driver.
>

Ok, I will change it in v4.

best regards
wang shengjiu