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Problem about changing the cpu frequency on OMAP-L137

yiran chang
Prodigy 90 points

Hi.

My board is working fine at 300MHz, and now I need to boost the frequency to 375MHz.

I change the PLL Initialization code in ARM ubl, and the Uboot is successfully booted with uart console showing " ARM clock : 372000000 Hz". While booting the kernel, it just stopped after  "booting the kernel".

I suppose  the uart is not initialized correctly because of the PLL frequency change, but I don't know how to modify the kernel to change the operating point. 

I try the instructions on http://processors.wiki.ti.com/index.php/OMAPL1:_Changing_the_Operating_Point but I can't find the corresponding config option in menuconfig.

Can anyone help?