Starterware/OMAPL138B-EP: OMAPL138 with 456Mhz Speed. what are the changes required in AISGEN tool Setting

To set the OMAPL138 speed to 456 Mhz , you need to configure the PLL0 to set SYSCLK1 to 456 Mhz which you seem to have configured correctly.

Note all of the other clocks also need to follow the datasheet guideline so you can simulate the clocks using the clock spreadsheet here to make sure you meet the spec on all the clocks. Note DDR configuration needs to match the DDR2 part that you will use on your custom board. If you are using LCDK then this correct.

Note, after the AIS gen tool sets the clocks make sure that uboot/secondary bootloader or application code doesn`t modify the PLL to lower clock setting. If this is the case, the device will boot at 456 Mhz and then the application software will bring down the clock setting.

Regards,
Rahul