Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
Date:   Fri, 29 May 2020 19:16:06 +0100
From:   Mark Brown <broonie@kernel.org>
To:     Tzung-Bi Shih <tzungbi@google.com>
Cc:     Jiaxin Yu <jiaxin.yu@mediatek.com>,
        Liam Girdwood <lgirdwood@gmail.com>,
        Takashi Iwai <tiwai@suse.com>,
        Matthias Brugger <matthias.bgg@gmail.com>,
        Hariprasad Kelam <hariprasad.kelam@gmail.com>,
        ALSA development <alsa-devel@alsa-project.org>,
        linux-arm-kernel@lists.infradead.org,
        linux-mediatek@lists.infradead.org,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        howie.huang@mediatek.com
Subject: Re: [PATCH] ASoC: mediatek: mt6358: support DMIC one-wire mode
Message-ID: <20200529181606.GU4610@sirena.org.uk>
References: <1590750293-12769-1-git-send-email-jiaxin.yu@mediatek.com>
 <20200529110915.GH4610@sirena.org.uk>
 <CA+Px+wVSwJK-=75chKLjSEe3bPRtV2wD95W5D_pdR0Pw0G470A@mail.gmail.com>
 <20200529130539.GK4610@sirena.org.uk>
 <CA+Px+wVhXoU=BdBmMW0sdPtUrnQH+Kn6dkFdW-n67qEDGceCEQ@mail.gmail.com>
MIME-Version: 1.0
Content-Type: multipart/signed; micalg=pgp-sha512;
        protocol="application/pgp-signature"; boundary="oP9at/Ymg5VWhwKB"
Content-Disposition: inline
In-Reply-To: <CA+Px+wVhXoU=BdBmMW0sdPtUrnQH+Kn6dkFdW-n67qEDGceCEQ@mail.gmail.com>
User-Agent: Mutt/1.10.1 (2018-07-13)
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk


--oP9at/Ymg5VWhwKB
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline

On Sat, May 30, 2020 at 01:26:20AM +0800, Tzung-Bi Shih wrote:
> On Fri, May 29, 2020 at 9:05 PM Mark Brown <broonie@kernel.org> wrote:

> > I thought that was normal for DMICs - is this selecting between left and
> > right or something?

> Not sure what is the common name but use the same context here.

> MT6358 accepts up to 2 PDM wires for 2 DMICs.
> If one wire mode is on, MT6358 only accepts 1 PDM wire.
> If one wire mode is off, MT6358 merges L/R from 2 PDM wires into 1
> I2S-like to SoC.

Oh, interesting - so it's essentially a mixer?  Not seen that before but
makes sense.  In any case this definitely seems like a good fit for a DT
property.

--oP9at/Ymg5VWhwKB
Content-Type: application/pgp-signature; name="signature.asc"

-----BEGIN PGP SIGNATURE-----

iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAl7RUWYACgkQJNaLcl1U
h9DzCAf/eSG8ftQqt2zLUXgVK2VdTkdi/4wwtHrEUTnLh92NVK3qVJo7AlDSmwxK
nq/ophHJqVsYmeXUCott6BaJKspd6r+KnrnyJRupzBixtLTx573x7VdREPful5eW
6cVUHkoI0quLHqspblBrZFW0kvt6iwuol2dK0pIORn6rRiaaQlzB9kTmE1BI5Clt
GZrYuFcCzsW7IHYLPWD3Mbl9IsTFius8mjWym4jiglkPFu+8c8bgXRLJE7wGgoGz
x60eHOnNmXwuzOBkrao6njQPWLX+/jtRU5aw4mQ5csVzf662KRmsciNScxyWLHMV
v00PW1FlfI9AGrtQdlSKb1UMyO+Rpg==
=ODhy
-----END PGP SIGNATURE-----

--oP9at/Ymg5VWhwKB--