Enabling cache on J4 DSP.

Hello,

We are porting WMV7/8 decoder on J4 DSP and observing very low performance.
Same is ported and tested for VGA on Davinci DSP and there we get 30 fps.
Hence expect similar performance on J4 DSP.

We are trying to enable the cache to see if there is any performance improvement.
For this, we are using cache code for J4 from aaclcdec given in sdk.
After using this code we are unable to decode a frame out of the decoder.
Decoder throws some error which is specific to decoding.

As we understand on J4 ,the memory used by dsp is cached. We want to make sure that cache is enabled in our setup.
Are there any specific register settings we need to make to enable the cache?
How to check if cache is already enabled or not?

Please find attached cache code for your reference and help us to understand this.