Hi Stanley, On Tue, May 25, 2010 at 15:35:52, stanley.miao wrote: > Kevin Hilman wrote: > > <snip> > >>> > >>> > >> This patch causes that the sound can not work normally on OMAP_L138. > >> > >> > > > > Can you describe "can not work normally"? Does that mean simply does > > not work, or works with pops & clicks etc.? > > > > Just to clarify... how did you isolate it to this patch. > > > > If you revert just this patch on current davinci git, do you have > > working sound as you expect again? > > > Below is the test result: > > $/root> aplay audiodump.wav > Playing WAVE 'audiodump.wav' : Signed 16 bit Little Endian, Rate 44100 > Hz, Stereo > aplay: pcm_write:1269: write error: Input/output error > $/root> > > After revert it, the audio works fine. >
This patch works fine on DM644x which has McBSP but breaks audio on OMAP L138 (as you had mentioned) which has McASP. Ideally McBSP/McASP should start after EDMA is started. If not then this patch clears the EDMA event which is actually set by McBSP/McASP. As this patch is working fine on DM644x, I think there is some issue in the audio driver which needs to be debugged. Regards, Sudhakar _______________________________________________ Davinci-linux-open-source mailing list Davinci-linux-open-source@linux.davincidsp.com http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
