MPC8641 based custom board Kernel stuck at 1000Mhz core clock

[Valdis.Kletnieks at vt.edu]

On Thu, 27 Mar 2014 16:04:37 +0530, Ashish said:
> Hi,
>
>   I am using MPC8641-HPCN based custom board and able to boot linux at
> MPX clock 400Mhz and core clock 800mhz. When I am increasing core
> frequency ie MPX clock at 400Mhz and core at 1Ghz, kernel stuck.

Step 0:  Prove to us that your core actually runs reliable and stably at 1Ghz.

Step 1: Figure out *where* it gets stuck.  If you have earlyprintk working on
your board, adding 'initcall_debug ignore_loglevel' to the kernel cmdline often
helps track down where a kernel hangs during boot.

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