Problem porting code from LAUNCHXL-F28377S to LAUNCHXL-F28379D

Hello,

For a H bridge inverter application, when i try to port my code from LAUNCHXL-F28377S to LAUNCHXL-F28379D, ePwm frequencys of  LAUNCHXL-F28379D are half of what i used to see at  LAUNCHXL-F28377S ePwm frequencys. İ did not change any variable in my code. Is there any clocking difference between there two boards.

And also, for  LAUNCHXL-F28379D when i build my code with compiler version TI v.6.4.10 there is no problem, but when i build my code with TI v.15.12.0LTS to 15.12.3LTS, i get 10 warnings, #10190-D. 

Thank you for your help