From mboxrd@z Thu Jan 1 00:00:00 1970 From: Liam Girdwood Subject: Re: asoc: no valid backend routes for PCM: SDP4430 Media Date: Thu, 9 Jun 2011 10:42:10 +0100 Message-ID: <4DF09572.6070900@ti.com> References: <537926.35497.qm@web161718.mail.bf1.yahoo.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from devils.ext.ti.com (devils.ext.ti.com [198.47.26.153]) by alsa0.perex.cz (Postfix) with ESMTP id 0D0C02413F for ; Thu, 9 Jun 2011 11:42:16 +0200 (CEST) In-Reply-To: <537926.35497.qm@web161718.mail.bf1.yahoo.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: alsa-devel-bounces@alsa-project.org Errors-To: alsa-devel-bounces@alsa-project.org To: hong zhang Cc: "alsa-devel@alsa-project.org" List-Id: alsa-devel@alsa-project.org Hi Henry, On 08/06/11 20:08, hong zhang wrote: > Liam, > > I have downloaded kernel tar ball. Three questions need your help. > > 1. which defconfig should be used in arch/arm/configs? > I do not see OMAP4 for SDP4430 (blaze board). Panda does not have DMIC > only blaze has it. > There is an omap2plus defconfig. > 2. On blaze board, I have to turn off two analog captures and leave DMIC open. Can you verify my gst-launch is correct? I cannot capture voice from DMIC on OMAP4 blaze board us it. > > gst-launch-0.10 -v alsasrc num-buffers=1000 ! 'audio/x-raw-int,rate=8000,channels=1,endianness=1234,width=16,depth=16' ! audioconvert ! wavenc! filesink location=/home/normanc/Desktop/8000.wav > > 3. If I specify DMIC device, command is rejected. > > gst-launch-0.10 -v alsasrc device="hw:0,10" num-buffers=1000 ! 'audio/x-raw-int, rate=8000,channels=1,endianness=1234,width=16,depth=16' ! audioconvert ! wavenc! filesink location=/home/normanc/Desktop/8000.wav > The easiest thing todo first is to get arecord working. Use hw:0,1 for DMIC and make sure you use alsamixer to configure the correct audio paths for DMIC to hw:0,1. > TI support team in France says item 2 should work for DMIC. But I simply could not get it. TI team says item 2 works for "official release 2.6.35-990-omap4 #9". > > I have spent 1 week on it with 2.6.35-990-omap4 #9 > > Please advise! > It does look like you have not configured the audio route here for the DMIC to hw:0,1. Use the ABE diagram to create your route with alsamixer. Liam > Thanks. > > ---henry > > --- On Wed, 6/8/11, Liam Girdwood wrote: > >> From: Liam Girdwood >> Subject: Re: [alsa-devel] asoc: no valid backend routes for PCM: SDP4430 Media >> To: "hong zhang" >> Cc: "alsa-devel@alsa-project.org" >> Date: Wednesday, June 8, 2011, 9:22 AM >> On 07/06/11 20:59, hong zhang wrote: >>> Liam, >>> >>> Actually, I could not prove DMIC on OMAP4 blaze board >> is working in both kernel 2.6.35 and 2.6.38 using arecord >> and gstreamer-alsa. >>> >>> In 2.6.35, arecord returns 44 bytes with read error >>> In 2.6.38, arecord collects native data. >>> >>> Gstreamer-alsa could not get voice after turning off >> analog captures using amixer. >>> >>> Any information regarding DMIC on OMAP4? I see people >> send DMIC patch to 2.6.38. >>> >> >> DMIC works on OMAP4, can you try my branch :- >> >> https://gitorious.org/omap-audio/linux-audio/commits/lrg/topic/omap-asoc-next-3.1 >> >> Liam >> >>