linux-kernel - RE: [PATCH v2 1/5] ASoC: dt-bindings: Add FSD I2S controller bindings

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Date:   Mon, 9 Jan 2023 09:35:47 +0530
From:   "Padmanabhan Rajanbabu" <p.rajanbabu@...sung.com>
To:     "'Mark Brown'" <broonie@...nel.org>
Cc:     <lgirdwood@...il.com>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <s.nawrocki@...sung.com>,
        <perex@...ex.cz>, <tiwai@...e.com>, <pankaj.dubey@...sung.com>,
        <alim.akhtar@...sung.com>, <rcsekar@...sung.com>,
        <aswani.reddy@...sung.com>, <alsa-devel@...a-project.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-samsung-soc@...r.kernel.org>
Subject: RE: [PATCH v2 1/5] ASoC: dt-bindings: Add FSD I2S controller
 bindings



> -----Original Message-----
> From: Mark Brown [mailto:broonie@...nel.org]
> Sent: 03 January 2023 11:35 PM
> To: Padmanabhan Rajanbabu <p.rajanbabu@...sung.com>
> Cc: lgirdwood@...il.com; robh+dt@...nel.org;
> krzysztof.kozlowski+dt@...aro.org; s.nawrocki@...sung.com;
> perex@...ex.cz; tiwai@...e.com; pankaj.dubey@...sung.com;
> alim.akhtar@...sung.com; rcsekar@...sung.com;
> aswani.reddy@...sung.com; alsa-devel@...a-project.org;
> devicetree@...r.kernel.org; linux-kernel@...r.kernel.org; linux-samsung-
> soc@...r.kernel.org
> Subject: Re: [PATCH v2 1/5] ASoC: dt-bindings: Add FSD I2S controller
> bindings
> 
> On Tue, Jan 03, 2023 at 10:26:09AM +0530, Padmanabhan Rajanbabu wrote:
> 
> > +
> > +      tesla,fsd-i2s: with all the available features of Exynos7 I2S,
> > +      supporting only stereo channel playback and capture.
> 
> The driver claims that 7.1 is also supported.

For I2S mode, data lines for channel 3 to 6 are not routed out of the SoC.
i.e FSD SoC has only SDO0 line routed out. SDO1 and 2 are floating pins. 

So Exynos7-I2S in FSD SoC supports only stereo playback and capture in
I2S mode. I'll reword the description in the next patch set to reflect the
above information.

Thanks,
Padmanabhan R.