why cyclone v soc HPS running linux can only get 200 BogoMIPS?

when linux running on cyclone v soc HPS, it can only get 200.00 BogoMIPS as below. ​ root@socfpga:~# cat /proc/cpuinfo processor : 0 model name : ARMv7 Processor rev 0 (v7l) BogoMIPS ...