mangOH yellow reboots when expansion cable plugged in

mangOH Yellow
1

When the expansion cable is plugged in - even with nothing connected to it - the yellow continuously reboots with the following messages. Has anyone else experienced this?

[   34.732250] dpm_run_callback(): platform_pm_suspend+0x0/0x38 returns -16
[   34.732276] PM: Device alarmtimer failed to suspend: error -16
[   34.733532] PM: Some devices failed to suspend, or early wake event detected
[   36.820734] dpm_run_callback(): platform_pm_suspend+0x0/0x38 returns -16
[   36.820758] PM: Device alarmtimer failed to suspend: error -16
[   36.820773] PM: Some devices failed to suspend, or early wake event detected
[   38.864299] dpm_run_callback(): platform_pm_suspend+0x0/0x38 returns -16
[   38.864327] PM: Device alarmtimer failed to suspend: error -16
[   38.865677] PM: Some devices failed to suspend, or early wake event detected
[   40.928616] dpm_run_callback(): platform_pm_suspend+0x0/0x38 returns -16
[   40.928641] PM: Device alarmtimer failed to suspend: error -16
[   40.929915] PM: Some devices failed to suspend, or early wake event detected
[   43.001692] dpm_run_callback(): platform_pm_suspend+0x0/0x38 returns -16
[   43.001719] PM: Device alarmtimer failed to suspend: error -16
[   43.002435] PM: Some devices failed to suspend, or early wake event detected
[   45.081999] dpm_run_callback(): platform_pm_suspend+0x0/0x38 returns -16
[   45.082027] PM: Device alarmtimer failed to suspend: error -16
[   45.083292] PM: Some devices failed to suspend, or early wake event detected
[   47.122230] Freezing of tasks aborted after 0.005 seconds
[   47.244717] dpm_run_callback(): platform_pm_suspend+0x0/0x38 returns -16
[   47.244743] PM: Device alarmtimer failed to suspend: error -16
[   47.246114] PM: Some devices failed to suspend, or early wake event detected
2

Couple of points:

a. We dont allow hot plug of cable. It will lead to reset
b. Make sure no wires are shorted to each other

We dont observe any reboots in normal operation.

3

Thanks for the response. I’m pretty sure it wasn’t a hot plug (I’m posting on behalf of someone in another location). UART1 was connected to another board though the cable. It might be that the wrong wires were connected. I will pass on the information.