On Tue, Mar 15, 2011 at 5:53 PM, Jarkko Nikula <jhnik...@gmail.com> wrote: > On Tue, 15 Mar 2011 11:12:17 +0800 > Bob Liu <lliu...@gmail.com> 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. > -- Regards, --Bob -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
