From: Mark Brown <broonie@kernel.org>
To: Tzung-Bi Shih <tzungbi@google.com>
Cc: Hariprasad Kelam <hariprasad.kelam@gmail.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
howie.huang@mediatek.com, Takashi Iwai <tiwai@suse.com>,
ALSA development <alsa-devel@alsa-project.org>,
Jiaxin Yu <jiaxin.yu@mediatek.com>,
Liam Girdwood <lgirdwood@gmail.com>,
linux-mediatek@lists.infradead.org,
Matthias Brugger <matthias.bgg@gmail.com>,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH] ASoC: mediatek: mt6358: support DMIC one-wire mode
Date: Fri, 29 May 2020 19:16:06 +0100 [thread overview]
Message-ID: <20200529181606.GU4610@sirena.org.uk> (raw)
In-Reply-To: <CA+Px+wVhXoU=BdBmMW0sdPtUrnQH+Kn6dkFdW-n67qEDGceCEQ@mail.gmail.com>
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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.
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WARNING: multiple messages have this Message-ID (diff)
From: Mark Brown <broonie@kernel.org>
To: Tzung-Bi Shih <tzungbi@google.com>
Cc: Hariprasad Kelam <hariprasad.kelam@gmail.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
howie.huang@mediatek.com, Takashi Iwai <tiwai@suse.com>,
ALSA development <alsa-devel@alsa-project.org>,
Jiaxin Yu <jiaxin.yu@mediatek.com>,
Liam Girdwood <lgirdwood@gmail.com>,
linux-mediatek@lists.infradead.org,
Matthias Brugger <matthias.bgg@gmail.com>,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH] ASoC: mediatek: mt6358: support DMIC one-wire mode
Date: Fri, 29 May 2020 19:16:06 +0100 [thread overview]
Message-ID: <20200529181606.GU4610@sirena.org.uk> (raw)
In-Reply-To: <CA+Px+wVhXoU=BdBmMW0sdPtUrnQH+Kn6dkFdW-n67qEDGceCEQ@mail.gmail.com>
[-- Attachment #1.1: Type: text/plain, Size: 657 bytes --]
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.
[-- Attachment #1.2: signature.asc --]
[-- Type: application/pgp-signature, Size: 488 bytes --]
[-- Attachment #2: Type: text/plain, Size: 170 bytes --]
_______________________________________________
Linux-mediatek mailing list
Linux-mediatek@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-mediatek
WARNING: multiple messages have this Message-ID (diff)
From: Mark Brown <broonie@kernel.org>
To: Tzung-Bi Shih <tzungbi@google.com>
Cc: Hariprasad Kelam <hariprasad.kelam@gmail.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
howie.huang@mediatek.com, Takashi Iwai <tiwai@suse.com>,
ALSA development <alsa-devel@alsa-project.org>,
Jiaxin Yu <jiaxin.yu@mediatek.com>,
Liam Girdwood <lgirdwood@gmail.com>,
linux-mediatek@lists.infradead.org,
Matthias Brugger <matthias.bgg@gmail.com>,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH] ASoC: mediatek: mt6358: support DMIC one-wire mode
Date: Fri, 29 May 2020 19:16:06 +0100 [thread overview]
Message-ID: <20200529181606.GU4610@sirena.org.uk> (raw)
In-Reply-To: <CA+Px+wVhXoU=BdBmMW0sdPtUrnQH+Kn6dkFdW-n67qEDGceCEQ@mail.gmail.com>
[-- Attachment #1.1: Type: text/plain, Size: 657 bytes --]
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.
[-- Attachment #1.2: signature.asc --]
[-- Type: application/pgp-signature, Size: 488 bytes --]
[-- Attachment #2: Type: text/plain, Size: 176 bytes --]
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
WARNING: multiple messages have this Message-ID (diff)
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
Date: Fri, 29 May 2020 19:16:06 +0100 [thread overview]
Message-ID: <20200529181606.GU4610@sirena.org.uk> (raw)
In-Reply-To: <CA+Px+wVhXoU=BdBmMW0sdPtUrnQH+Kn6dkFdW-n67qEDGceCEQ@mail.gmail.com>
[-- Attachment #1: Type: text/plain, Size: 657 bytes --]
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.
[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 488 bytes --]
next prev parent reply other threads:[~2020-05-29 18:17 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-29 11:04 [PATCH] ASoC: mediatek: mt6358: support DMIC one-wire mode Jiaxin Yu
2020-05-29 11:04 ` Jiaxin Yu
2020-05-29 11:04 ` Jiaxin Yu
2020-05-29 11:04 ` Jiaxin Yu
2020-05-29 11:09 ` Mark Brown
2020-05-29 11:09 ` Mark Brown
2020-05-29 11:09 ` Mark Brown
2020-05-29 11:09 ` Mark Brown
2020-05-29 11:22 ` Tzung-Bi Shih
2020-05-29 11:22 ` Tzung-Bi Shih
2020-05-29 11:22 ` Tzung-Bi Shih
2020-05-29 11:22 ` Tzung-Bi Shih
2020-05-29 13:05 ` Mark Brown
2020-05-29 13:05 ` Mark Brown
2020-05-29 13:05 ` Mark Brown
2020-05-29 13:05 ` Mark Brown
2020-05-29 17:26 ` Tzung-Bi Shih
2020-05-29 17:26 ` Tzung-Bi Shih
2020-05-29 17:26 ` Tzung-Bi Shih
2020-05-29 17:26 ` Tzung-Bi Shih
2020-05-29 18:16 ` Mark Brown [this message]
2020-05-29 18:16 ` Mark Brown
2020-05-29 18:16 ` Mark Brown
2020-05-29 18:16 ` Mark Brown
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