Why does the ARM A15 processor have so many DVFS levels ?

For eg. the A15 on the Samsung Exynos 5422 has around 19 DVFS levels which varies frequencies from 200MHz to 2GHz.
DVFS implementation in C

Hello, Is there any API to implement DVFS in a Linux C environment? I would like to use DVFS to implement an energy-efficient application for a research project. Best regards
Is First-level table skippable? (VMSA)

Hi forks. I am a newbie engineer for arm-processor and I have a question about VMSAv7-32. According to ARMv8 architecture manual, page 3592: arm processor can skip first level table if a first level table...
Square root calculation results. FPU logic of A15 and A7 CPUs on Odroid-XU3 board.

Hello, I did experiments with Odroid XU3. I have noticed interesting effect of square root calculation. I have received unexpected results, during experiments with execution time of 50 million square...
What's the cortex-A7 pipeline's in-order and cortex-A15 pipeline's out-of-order mean?

What's the cortex-A7 pipeline's in-order and cortex-A15 pipeline's out-of-order mean? In ARM's white paper(about the cortex-A7 and cortex-A15) says as follow: I want ask the in-order and out-of-order...