Kevin, With the cpufreq support on DA850/OMAP-L138 SoC we are observing that audio does not function as expected at all sampling rates for various operating points. At a CPU frequency of 96MHz, audio works fine with a sampling frequency of 8kHz. For other sampling rates, there are lot of underrun/overrun errors. This is because of EDMA also runs at a lower speed and is not able to transfer data at the desired rate.
To overcome the above, we can depend on the user to set the scaling min frequency to be the same as scaling max frequency (in this case 300 MHz) before starting aplay/arecord or temporarily move to performance governor so that the audio quality is not affected. Do you think this is the right approach to this problem? Any other solutions you suggest exploring? Regards, Chaithrika _______________________________________________ Davinci-linux-open-source mailing list [email protected] http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
