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Deep sleep mode in AM35xx starter kit

Goutam Mandal
Prodigy 10 points

Hi,

I am currently working with  AM335x starter kit and I am not able to come out of the deep sleep mode via UART or touch screen interface.


Could you please let me know how I can enable UART to come out of the deep sleep mode

Thanks,

Goutam

  • 0
    Expert 1990 points

    We always use software code to sleep board, when wake it up, we can not do such by software. This wiki will helps you to successful suspend resume cycle user guide.

    TI EZSDK, and starter kit has woken up from the console with prebuilt bunaries.

    Log below.

     root@am335x-evm:/# echo mem > /sys/power/state

    [   81.322540] PM: Syncing filesystems ... done.

    [   81.330322] Freezing user space processes ... (elapsed 0.01 seconds) done.

    [   81.354705] Freezing remaining freezable tasks ... (elapsed 0.01 seconds) done.

    [   81.374725] Suspending console(s) (use no_console_suspend to debug)

    [   81.502044] PM: suspend of devices complete after 119.964 msecs

    [   81.503601] PM: late suspend of devices complete after 1.495 msecs

    [   84.120788] GFX domain entered low power state

    [   84.120849] Successfully transitioned all domains to low power state

    [   84.329895] PM: early resume of devices complete after 208.587 msecs

    [   84.420227]  gadget: high-speed config #1: Linux File-Backed Storage

    [   84.457244] net eth0: CPSW phy found : id is : 0x7c0f1

    [   84.460296] PM: resume of devices complete after 129.978 msecs

    [   84.509948] Restarting tasks ... done.