Hi Mark,
Thanks for your advice!
On Thu, 2010-08-26 at 13:41 +0100, Mark Brown wrote:
On Thu, Aug 26, 2010 at 08:05:38PM +0800, Jie Jiang wrote:
The configuration of mx27 ssi1 transmission channel is as follows(using ssi api from kernel 2.6.19.2):
This is an extremely old kernel version, the current kernel version is 2.6.35 with 2.6.36 in development. Current mainline kernels have a different API for configuring the IOMUX. I'd strongly recommend working with a more current kernel if you're looking for community support.
Here I'm not very sure about the setting of frame rate and frame sync length. Is the above setting right? But even I set frame rate to 1, it does not make any difference.
What's the possible reason causing the incorrect faster playback speed? Any suggestion is appreciated.
Normally this will be the result of either an incorrect frame rate or the hardware trying to play back mono data as stereo (which will cause data to be consumed as twice the expected rate).
Yes, it seems to be this reason that causes problem. When I playback a stereo wav file(8kHz,16bit, stereo), everything goes well.But when trying to playback a mono wav (8kHz,16bit, mono)file, problem stills exist.
What's the possible reason for incorrect handling of mono file? How to solve it so I can playback mono file correctly?
Regards, Jie