SK-AM62-LP: Is there a way to distinguish which PIN the wake-up signal originates from when a wake-up signal arrives?

xiao-an lei

Part Number: SK-AM62-LP

Tool/software:

Hi Expert:

when configuring GPIO pins as wake-up sources for low-power modes, is there any way to distinguish which specific pin triggered the system's resumption from sleep？

4 months ago

0 Kendall Willis 4 months ago

TI__Prodigy 330 points

Hi Xiao-An,

When the system resumes, the wake reason along with the pin that triggered wakeup are printed on the console. The following documentation explains it in depth here: https://software-dl.ti.com/processor-sdk-linux/esd/AM62X/latest/exports/docs/linux/Foundational_Components/Power_Management/pm_wakeup_sources.html#confirming-the-wakeup-event-type

Best,

Kendall

0 Anshu Madwesh 4 months ago in reply to Kendall Willis

TI__Mastermind 18460 points

Hi Xiao-An,

Just to clarify, the message with the exact pin information only applies to Linux SDK 11.0+:

[  249.472314] ti-sci 44043000.system-controller: ti_sci: wakeup source:0x80, pin:0x72, mode:0x1

For SDK version prior to 11.0, the message will return just the source:

[   37.357710] ti-sci 44043000.system-controller: ti_sci_resume: wakeup source: 0x50

Best Regards,

Anshu

0 xiao-an lei 3 months ago in reply to Anshu Madwesh

Intellectual 420 points

THANKS VERY MUCH

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SK-AM62-LP: Is there a way to distinguish which PIN the wake-up signal originates from when a wake-up signal arrives?