Is there a way to choose different processor clock rates on the T4240RDB board?

[nickcaruso]

That's it, that's the question:  Is there a way to choose different processor clock rates on the T4240RDB board, either by setting options in the uboot shell, or by recompiling uboot, or ... ?

I tried to search the documentation but I couldn't find the answer.

Thanks for your help!

[ufedor · Accepted solution]

Of course it is possible using modified RCW.

The RCW is described in the T4240 Reference Manual, 4.6.4.1 RCW Field Definitions:

https://www.nxp.com/webapp/Download?colCode=T4240RM

Current RCW is printed by U-Boot.

It could be imported and modified using the PBL Tool from the QorIQ Configuration and Validation Suite which is bundled with CodeWarrior evaluation version available at:

CodeWarrior Dev Tools for Power Architecture|NXP

The RCW programming is explained in the Linux SDK Documentation:

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