On Thu, 8 Jan 2009, Lopez Cruz, Misael wrote: > > * Lopez Cruz, Misael <[email protected]> [081219 04:53]: > > > This patch enables writing to McBSP Transmit Configuration Control > > > Register (XCCR) and Receive Configuration Control Register > > (RCCR) for > > > 2430/34xx platforms. It also adds XCCR, RCCR entries in > > McBSP register > > > configuration structure and bit definitions for both registers. > > > > Pushing to l-o. Can you briefly describe what happens with > > ASoC if these registers are not used? We may be able to send > > this as a fix to mainline during the -rc cycle. > > If we enable the writing to those registers for 2430/34xx and don't set the > default values (setting 0 as a consequence) in ASoC driver, the > Transmit/Receive DMA mode gets disabled and the the transmission/reception > doesn't happen, ending with a "write error: Input/Output error" when playing > with 'aplay'. > > -Misa--
Something is wrong with this patch, at least on Beagle. When starting audio playback, there is a several second pause, then a console message: ALSA sound/core/pcm_native.c:1493: playback drain error (DMA or IRQ trouble?) No audio emerges from the board. With this patch reverted, a very basic audio test here seems to work. - Paul -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
