According to the table 1 of AN5170, it shows voltage levels in some case of ARM freq.
For example, VDDARM is 0.925V when frequency is 198MHz.
Also according to the table 2 of AN4715, it shows voltage levels in some case of ARM freq, too.
For example, VDDARM is 0.95V when frequency is 396MHz.
I have a question about those .
Which drivers control those VDDARM's voltage ?