Hi Prad,
the error is generated by a simple sanity check function by SYS/BIOS. I'm not sure who is supposed to set up your system clock, but from my guess here the gel file from your previous ICE board left the CPU frequency at its default.
You have 2 options here, either find the code that configures the clock and comment it out (perhaps in the gel file) or tell SYS/BIOS of the new CPU frequency. Updating SYS/BIOS with the new frequency can be done during runtime or config time.
Runtime:
Types_FreqHz freq; freq.hi = 0; freq.lo = 21945621; BIOS_setCpuFreq(&freq);
Config time:
var BIOS = xdc.useModule('ti.sysbios.BIOS'); BIOS.cpuFreq.hi = 0; BIOS.cpuFreq.lo = 21945621;