device tree, cpu

Hello,

    I am currently designing a computer board similar to the Beaglebone Black and Starter Kit.  I was looking at the device tree for the CPU@0

am33xx.dtsi:

operating-points = <

                                                                /* kHz    uV */

                                                              720000  1285000

                                                                600000  1225000

                                                                500000  1125000

                                                                275000  1125000

                                                >;

                                                voltage-tolerance = <2>; /* 2 percentage */

                                                clock-latency = <300000>; /* From omap-cpufreq driver */

1) i am planning to use the  AM3359BZCZA80 which is rated at 800MHz, so the obvious question is

 Do you operating points need to be changed for this device?

2) second question is: Is this clock latency always going to be 300000 for any am33xx device or is this 

 dependant on the device, clock frequency, and / or pcb board layout?

3) how does one check or measure the clock latency, do you probe directly on the board, or do you 

 use a emulator or debugger and how do you know if you are having problems?

Thanks

Rocketrod