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AWu6's avatar
AWu6
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6 years ago

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 ...
minmax's avatar
minmax
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5 years ago

Hi @SimoneBo,

I'm facing the same issue on DE10-nano platform and kernel 4.14 or later.
I tried to add some changes to device tree referring .dts file created by sopc2dts and put the updated dtb file to my system, but I was not able to solve this issue. I still see 200.00 BogoMIPS.

Could you kindly tell me what changes you applied to dts file ?

Best Regards,
minmax

SimoneBo's avatar
SimoneBo
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5 years ago

Hi @minmax ,

I still see "200.00 BogoMIPS" but I can see that the overall performances was heavily improved.

I updated, in .dts file, the clocks/pll section as reported in 4.14.x of linux-socfpga git repo.

Regards,

Simone

  • minmax's avatar
    minmax
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    5 years ago

    Hi @Simone,
    I see. I got your situation. Thank you.
    Since I already used the latest dts file of 4.14.x branch of linux-socfpga git repo, it seems that I'm now on the same page of you.
    I hope 200 BogoMIPS issue itself will be fixed in the future.

    Best Regards,
    minmax

  • vrbavojtech's avatar
    vrbavojtech
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    3 years ago

    Hello,

    I am still facing the same issue with Linux kernel 5.19 + u-boot v2022.10. What exactly did you update in the device tree section to make the MPU clock frequency 800MHz?

    Thanks in advance.

    Vojtěch