* Re: Question about codec which is supporting TDM / 5.1ch
2015-01-21 7:44 ` Question about codec which is supporting TDM / 5.1ch Kuninori Morimoto
@ 2015-01-21 11:33 ` Mark Brown
2015-01-22 1:04 ` Kuninori Morimoto
2015-01-21 12:05 ` Lars-Peter Clausen
1 sibling, 1 reply; 5+ messages in thread
From: Mark Brown @ 2015-01-21 11:33 UTC (permalink / raw)
To: Kuninori Morimoto
Cc: TOMOHARU FUKAWA, Linux-ALSA, shiiba, YOSHIFUMI HOSOYA, shimoda,
Magnus, komatsu, tanaka
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On Wed, Jan 21, 2015 at 07:44:17AM +0000, Kuninori Morimoto wrote:
> Now, we want to create new board, and then, we want to use below codec if exist.
> Can you show it to us if it was exist ?
> (I researched it on upstream Linux source tree, but couldn't find....)
> - upstream Linux supports its driver
> - it supports TDM format
> - it supports 5.1ch sound
> - it supports DT bindings (if possible)
Some of the Wolfson/Cirrus mobile CODECs can do that with some fiddling
and mixing of output types but they're not really a good fit. Most of
the things doing 5.1 are like the WM8580 - they use separate data lines
rather than TDM, as far as I can tell a lot of 5.1 systems out there do
this by hooking up multiple stereo CODECs in parallel as slaves rather
than by using a single 5.1 CODEC.
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^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Question about codec which is supporting TDM / 5.1ch
2015-01-21 11:33 ` Mark Brown
@ 2015-01-22 1:04 ` Kuninori Morimoto
0 siblings, 0 replies; 5+ messages in thread
From: Kuninori Morimoto @ 2015-01-22 1:04 UTC (permalink / raw)
To: Mark Brown
Cc: TOMOHARU FUKAWA, Linux-ALSA, shiiba, YOSHIFUMI HOSOYA, shimoda,
Magnus, komatsu, tanaka
Hi Mark
> > Now, we want to create new board, and then, we want to use below codec if exist.
> > Can you show it to us if it was exist ?
> > (I researched it on upstream Linux source tree, but couldn't find....)
>
> > - upstream Linux supports its driver
> > - it supports TDM format
> > - it supports 5.1ch sound
> > - it supports DT bindings (if possible)
>
> Some of the Wolfson/Cirrus mobile CODECs can do that with some fiddling
> and mixing of output types but they're not really a good fit. Most of
> the things doing 5.1 are like the WM8580 - they use separate data lines
> rather than TDM, as far as I can tell a lot of 5.1 systems out there do
> this by hooking up multiple stereo CODECs in parallel as slaves rather
> than by using a single 5.1 CODEC.
Thank you for your information.
I guess multi-codec is for this purpose ?
If yes, I wonder what is different between DPCM and multi-codec ?
Best regards
---
Kuninori Morimoto
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Question about codec which is supporting TDM / 5.1ch
2015-01-21 7:44 ` Question about codec which is supporting TDM / 5.1ch Kuninori Morimoto
2015-01-21 11:33 ` Mark Brown
@ 2015-01-21 12:05 ` Lars-Peter Clausen
2015-01-22 1:05 ` Kuninori Morimoto
1 sibling, 1 reply; 5+ messages in thread
From: Lars-Peter Clausen @ 2015-01-21 12:05 UTC (permalink / raw)
To: Kuninori Morimoto, Mark Brown, Mark Brown, Linux-ALSA
Cc: TOMOHARU FUKAWA, shiiba, YOSHIFUMI HOSOYA, shimoda, Magnus,
komatsu, tanaka
On 01/21/2015 08:44 AM, Kuninori Morimoto wrote:
>
> Hi ALSA / ALSA SoC
>
> Now, we want to create new board, and then, we want to use below codec if exist.
> Can you show it to us if it was exist ?
> (I researched it on upstream Linux source tree, but couldn't find....)
>
> - upstream Linux supports its driver
> - it supports TDM format
> - it supports 5.1ch sound
> - it supports DT bindings (if possible)
Hi,
The AD1937(I2C) and AD1938/AD1939/ADAU1328(SPI) have TDM support and 8 DACs.
So they can support up to 7.1.
For more info see
http://wiki.analog.com/resources/tools-software/linux-drivers/sound/ad1936
- Lars
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Question about codec which is supporting TDM / 5.1ch
2015-01-21 12:05 ` Lars-Peter Clausen
@ 2015-01-22 1:05 ` Kuninori Morimoto
0 siblings, 0 replies; 5+ messages in thread
From: Kuninori Morimoto @ 2015-01-22 1:05 UTC (permalink / raw)
To: Lars-Peter Clausen
Cc: TOMOHARU FUKAWA, Linux-ALSA, shiiba, Mark Brown, YOSHIFUMI HOSOYA,
shimoda, Magnus, komatsu, Mark Brown, tanaka
Hi Lars
> > Now, we want to create new board, and then, we want to use below codec if exist.
> > Can you show it to us if it was exist ?
> > (I researched it on upstream Linux source tree, but couldn't find....)
> >
> > - upstream Linux supports its driver
> > - it supports TDM format
> > - it supports 5.1ch sound
> > - it supports DT bindings (if possible)
>
> Hi,
>
> The AD1937(I2C) and AD1938/AD1939/ADAU1328(SPI) have TDM support and 8 DACs.
> So they can support up to 7.1.
>
> For more info see
> http://wiki.analog.com/resources/tools-software/linux-drivers/sound/ad1936
Thank you for your information !!
Best regards
---
Kuninori Morimoto
^ permalink raw reply [flat|nested] 5+ messages in thread