On Wed, Mar 16, 2011 at 12:21 AM, Premi, Sanjeev <premi@xxxxxx> wrote: >> -----Original Message----- >> From: linux-omap-owner@xxxxxxxxxxxxxxx >> [mailto:linux-omap-owner@xxxxxxxxxxxxxxx] On Behalf Of Bob Liu >> Sent: Tuesday, March 15, 2011 3:27 PM >> To: Jarkko Nikula >> Cc: linux-omap@xxxxxxxxxxxxxxx; >> broonie@xxxxxxxxxxxxxxxxxxxxxxxxxxx; lrg@xxxxxxxxxxxxxxx; >> lars@xxxxxxxxxx; paul@xxxxxxxxx; peter.ujfalusi@xxxxxxxxx >> Subject: Re: [HELP] Audio on BeagleBoard xM can't work >> >> On Tue, Mar 15, 2011 at 5:53 PM, Jarkko Nikula >> <jhnikula@xxxxxxxxx> wrote: >> > On Tue, 15 Mar 2011 11:12:17 +0800 >> > Bob Liu <lliubbo@xxxxxxxxx> wrote: >> > >> >> It seems that the code in sound/soc/omap/omap-mcbsp.c uses >> the function >> >> "cpu-is-omap343x()" which fails and returns ENODEV. >> >> >> >> But I have enabled "OMAP3430 support" in "System Type" / >> "TI OMAP2/3/4 >> >> Specific Features", >> >> why it still return ENODEV? (Attached my kernel config). >> >> >> >> And after I changed that check to "cpu-is-omap34xx()", there was no >> >> error message but neither any audio output, >> >> I can't hear any sound. >> >> ---------------------------- >> > >> > Is the DMA running after you change the cpu_is_omap34xx and >> try to play >> > e.g. "aplay /dev/urandom"? If audio is running you should see DMA >> > interrupt count increasing with "grep DMA /proc/interrupts". >> > >> >> Yes, DMA interrupt count increased after aplay /dev/urandom or some >> other audio file. >> Thanks >> >> > If that is working then issue could be in codec side. I don't have a >> > beagle at the moment to verify but IRCC something like ~10 >> TWL4030 ALSA >> > controls must be adjusted in order to route audio from DAC >> to outputs >> > at proper volume. > > I don't have HW with me right now, can you try the following? > (Got the steps over phone from Abhilash) > > 1) run command "alsamixer" > 2) Un-mute by pressing the key "m" > 3) Play the audio using aplay > > If it doesn't work, you may want to check the options used by > alsamixer. I will be able to try it myself tomorrow morning. > Thanks for your reply. It seems pressing the key "m" has no effect during alsamixer and there are so many options I don't know how to adjust it. -- Regards, --Bob -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
