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

Hi El,

boot info as below:

U-Boot SPL 2013.01.01 (Dec 04 2019 - 18:04:45)

BOARD : Altera SOCFPGA Cyclone V Board

------current cpu : 0 ------

CLOCK: EOSC1 clock 25000 KHz

CLOCK: EOSC2 clock 25000 KHz

CLOCK: F2S_SDR_REF clock 0 KHz

CLOCK: F2S_PER_REF clock 0 KHz

CLOCK: MPU clock 800 MHz

CLOCK: DDR clock 400 MHz

CLOCK: UART clock 100000 KHz

CLOCK: MMC clock 3125 KHz

CLOCK: QSPI clock 400000 KHz

RESET: WARM

SDRAM: Initializing MMR registers

SDRAM: Calibrating PHY

SEQ.C: Preparing to start memory calibration

SEQ.C: CALIBRATION PASSED

SDRAM: 1024 MiB

NAND: Denali NAND controller

U-Boot 2013.01.01 (Dec 04 2019 - 18:07:52)

CPU : Altera SOCFPGA Platform

BOARD : Altera SOCFPGA Cyclone V Board

I2C: ready

DRAM: 1 GiB

NAND: NAND: Denali NAND controller

512 MiB

MMC: ALTERA DWMMC: 0

In: serial

Out: serial

Err: serial

Net: mii0

Hit any key to stop autoboot: 0

printer-loader #