From: Lars-Peter Clausen <lars@metafoo.de>
To: Sergej Sawazki <ssawazki@gmx.de>, alsa-devel@alsa-project.org
Cc: Benoit Cousson <bcousson@baylibre.com>
Subject: Re: ASoC: How to connect a single CPU DAI to two codecs?
Date: Sat, 27 Sep 2014 19:17:24 +0200 [thread overview]
Message-ID: <5426F124.2070607@metafoo.de> (raw)
In-Reply-To: <5426BCB8.6030002@gmx.de>
On 09/27/2014 03:33 PM, Sergej Sawazki wrote:
> Hello,
>
> I'm writing an ALSA SoC machine driver for a board that has two mono codecs
> (left and right audio channel). Each codec is controlled over I2C and has
> itsown address.Both codecs are connected to the same I2S CPU DAI (as shown
> below).
>
> +--------- (adr: 0x1a) -----+
> | |
> | +--------> codec_1 ----> (left channel audio)
> | |
> I2C I2S ----+
> | |
> | +--------> codec_2 ----> (right channel audio)
> | |
> +--------- (adr: 0x1b) -----+
>
> Can someone give me some advice on how to setup the 'snd_soc_card' and
> 'snd_soc_dai_link' in this case? Do I need two dai_links with the same
> 'cpu_dai_name' and 'platform_name'?
>
> Are there examples for such a configuration? I didn't had much luck in
> finding one in the mainline?
>
> Any help would be highly appreciated. Thanks!
Hi,
Support for multiple CODEC DAIs on the same link has recently been added by
Benoit. See commit 88bd870f ("ASoC: core: Add initial support for DAI
multicodec"). You now have the possibility to specify multiple CODEC DAIs in
the link using the snd_soc_dai_link_component struct.
- Lars
next prev parent reply other threads:[~2014-09-27 17:17 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-27 13:33 ASoC: How to connect a single CPU DAI to two codecs? Sergej Sawazki
2014-09-27 17:17 ` Lars-Peter Clausen [this message]
2014-09-28 17:20 ` Sergej Sawazki
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