On Tuesday, December 3, 2013 12:32:03 PM UTC-5, Lei Wang wrote: > > Follow your finding on the unexpected TPS65217C behavior, I patched the > tps65217 driver with irq handling. The 3.2 kernel does not handle > nNMI/PMIC_INT interrupt; the 3.8 kernel does. I placed printk in the > interrupt handler and got the same result as yours. The PMIC_INT was issued > every 2 seconds which is caused by the USBI flag in the TPS65217C interrupt > register. > > This appears to be related to USB OTG. The VBUS, ID, and D+ pins on USB0 are all generating 0.5 Hz signals. The signal on VBUS that the TPS65217C is detecting may be OTG probing. This may not be the cause of the random reboots, but it's worth some examination.
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