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Cycle Measurement on TI Netra EVM

Hi,

I am running codec on Netra EVM. The application and some code is running on CortexM3 while other HWAs are enabled (IVA-HD).  

I want to do the cycle measurement for this code on M3. I want to calculate the cycles taken by IVA-HD. 

For that I am tracking the register at the location 0x58040054 which is a capture time register in ICE crusher. 

Will this register give me the cycles taken by the IVA-HD per frame? I am facing a problem, I read this register before encode_frame( ) call and after encode_frame( ) call. 

The value in this register after encode_frame( ) call is less than the value before encode_frame( ) call.

Somebody please tell me whether I am doing it correct or not.

 

-Viranjan Pagar