[alsa-devel] asoc: no valid backend routes for PCM: SDP4430 Media
henryzhang62 at yahoo.com
Thu Jun 9 19:52:07 CEST 2011
--- On Thu, 6/9/11, Liam Girdwood <lrg at ti.com> wrote:
> From: Liam Girdwood <lrg at ti.com>
> Subject: Re: [alsa-devel] asoc: no valid backend routes for PCM: SDP4430 Media
> To: "hong zhang" <henryzhang62 at yahoo.com>
> Cc: "alsa-devel at alsa-project.org" <alsa-devel at alsa-project.org>
> Date: Thursday, June 9, 2011, 12:48 PM
> On 09/06/11 18:45, hong zhang wrote:
> > Liam,
> > Arecord gets data from DMIC! Using following
> > "arecord -f dat -D plughw:0,0 dmic.wav" with "amixer
> cset numid=61 1 and
> > amixer cset numid=60 2" to get data from DMIC after
> turning off two analog captures.
> > Information from "arecrod -l" is not sync with ABE
> routing table. For example, "arecord -l" indicates hw:0,10
> is DMIC capture but
> > ABE diagram indicates plughw:0,0 can be used for DMIC
> > Are "arecord -l" and "aplay -l" still useful?
> Yes, but not for OMAP4 atm.
1. What is OMAP4 ATM?
2. Why "hw:0,10 DMIC capture" does not work for DMIC input?
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