audio issue

Jack 123

Hi all,

We have underrun and overrun problem on TI816x. We find when the memory bandwidth is high, the overrun and underrun sometimes will appear, and cpu loading is about 40%. We have set the priority of EDMA of audio as 0, but the result is the same. Do you have any idea ?

over 13 years ago

0 Pavel Botev over 13 years ago

TI__Guru**** 170625 points

Hi Jack,

Are you using EZSDK 5.05.02.00? The EZSDK performance benchmark is:

http://processors.wiki.ti.com/index.php/TI81XX_PSP_04.04.00.01_Feature_Performance_Guide#Driver_DMA_usage

http://processors.wiki.ti.com/index.php/TI81XX_PSP_04.04.00.01_Feature_Performance_Guide#ALSA_SoC_Audio_Driver

http://processors.wiki.ti.com/index.php/TI81XX_PSP_04.04.00.01_Feature_Performance_Guide#ALSA_SoC_HDMI_Audio_Driver

Best Regards,

Pavel

0 Jack 123 over 13 years ago in reply to Pavel Botev

Intellectual 990 points

Hi Pavel,

I am using RDK3.0. I have used aplay and arecord to playback and capture the audio, and the application has the same result. If the resolution of my video stream was D1, it will not happen. It seems sometimes the memory bandwidth reaches peak value.

0 Pavel Botev over 13 years ago in reply to Jack 123

TI__Guru**** 170625 points

Hi Jack,

Have a look at the below thread, it might be in help:

http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/716/p/221518/782660.aspx#782660

Best Regards,

Pavel

0 Jack 123 over 13 years ago in reply to Pavel Botev

Intellectual 990 points

Hi Pavel,

I have set high priority for EDMA of audio, but it can't solve the problem.

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audio issue