[ts-7000] Sub 10ms delay on TS-7552 (Cavium cpu)

[JF Morneau <>]

With the default kernel, I can't get delays of less than 10ms. I 
increased the CONFIG_HZ from 100 to 1000 and I now can get sub 10ms delays.

Timing in our program seems to work. I could verify from an external 
time source that a 2 ms delay is really 2 ms. However, our custom setup 
was booting in around 13 sec from sd.  It now boots in 30 sec. I also 
noticed this change from dmesg:

[    0.020000] Calibrating delay loop (skipped)... 1916.92 BogoMIPS preset

Before, it was:

[    0.010000] Calibrating delay loop (skipped)... 191.69 BogoMIPS preset

It seems that there is more to it than just changing the CONFIG_HZ 
kernel config.




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