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I have a question about omapl138. I want to change the frequency about the arm and DSP of the omapl138.

1 Can I only  modify the linux kernal source code about this ? If it was,where could I change?

2 I have a project about UBL which I can open in CCS3.3. Can I compile it in CCS3.3 and then load it into nandflash ?

3 I try to compile  the project about UBL in CCS3.3. It is sucessful,but it can not run well after I load it. The cld screen is blank and the console can not reciece any output. How can I debug this progect?