我修改了dm365的ubl，让芯片降频运行在ARM216_DDR173_OSC19P2 频率下，程序运行到启动内核时停止：
## Booting kernel from Legacy Image at 80700000 ...
Image Name: Linux-2.6.32.17-davinci1-g2b4942
Created: 2014-01-15 1:32:11 UTC
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 2201516 Bytes = 2.1 MiB
Load Address: 80008000
Entry Point: 80008000
Verifying Checksum ... OK
Loading Kernel Image ... OK
OK
Starting kernel ...
Uncompressing Linux............................................................................................................................................... done, booting the kernel.
请问在ubl中修改频率后内核需要做什么修改
