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Altera_Forum's avatar
Altera_Forum
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8 years ago

Power Management in Cyclone V SOC

Hi Altera Team,

We would like to whether all the power reduction techniques for HPS listed in the below link is implemented on bare metal(Power_optimisation.zip) for Cyclone V SOC development kit?

https://www.altera.co.jp/documentation/iga1406135565764.html

Various methods discussed in the link are listed below:

hps method 1: fit code in cache

hps method 2: processor standby modes and dynamic clock gating

hps method 3: cpu1 in wfi/wfe or “standby loop”

hps method 4: “suspend to ram”/sdram “self refresh” or “suspend to disk”

hps method 5: lowering cpu frequency

hps method 6: energy efficient ethernet

hps method 7: usb power management

hps method 8: unused peripherals in reset

Please confirm.

Thanks in advance

Rabiammal A

2 Replies

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    8 years ago

    Hi, you can file a service request to Altera to confirm, but my suspicion is that ethernet and USB are probably not in baremetal (I've not seen baremetal drivers for both of these). I am not sure about the processor related power saving techniques though.

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    8 years ago

    --- Quote Start ---

    Hi, you can file a service request to Altera to confirm, but my suspicion is that ethernet and USB are probably not in baremetal (I've not seen baremetal drivers for both of these). I am not sure about the processor related power saving techniques though.

    --- Quote End ---

    Hi sunshine,

    Thanks for the reply.