iMX6q Sabre AI GPIO wdt

francescocamard · ‎08-27-2015

Hello All,

does this board have a specific GPIO that triggers a wdt (watch dog timer) event as reboot, boot loading fail or similar?

Thanks,

Francesco

igorpadykov · ‎08-31-2015

Hi francesco

yes this is WDOG1_B signal on SPF-27142 p.9

Design files, including hardware schematics, layout files and BOM

Best regards

igor

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francescocamard · ‎09-30-2015

Hi Igor,

I had time now to probe this signal but it's not toggling when a reboot occurs, only when i detach the power.

I also probed (with oscillo) the:

and all have the same pattern. Could you suggest some signal as reboot indicator?

Thanks and Regards,

Francesco

igorpadykov · ‎09-30-2015

Hi Francesco

Table 100, Table 101 i.MX6DQ Datasheet (rev.4, 7/2015)

shows fixed after reset state of signals. So one can try to use

one pin (setting it to opposite state) as such indicator

Best regards

igor

francescocamard · ‎10-14-2015

Hi Igor,

any update?

Thanks & Regards,

Francesco

igorpadykov · ‎10-14-2015

Hi Francesco

I am afraid no message sent specific for wdt reset.

~igor

francescocamard · ‎10-12-2015

Hi Igor,

when a WDOG occurs ( I had two triggered events) do you know if any message is written into the dmesg (or some other log)? Or only a reboot occurs?

Thanks,

Francesco

francescocamard · ‎09-01-2015

Hello Igor,

thanks for the answer. I saw the WDOG in the layout, is there any TP where I can solder a wire?

Regards,

Francesco