Again, I have the same question.Sorry, but you are wrong. Hardware responsible for changing voltage and frequency called Power Reset Control Management Unit doesn't know frequency that is set by you in frequency table. It knows only OPPs. There's not any way to tell PRCMU to set other frequency than defined in OPPs.
When 1.2GHz is mapped to ARM_100_OPP, the device refuses to boot. But when mapped to ARM_MAX_OPP, it boots without trouble.
Check your PM.