"dsps_interrupt 401: CAUTION: musb: Babble Interrupt Occurred", disconnection/connection, pendrive does not get detected

Gangadhar Gangu

Hi All,

I'm using AM335x based board. There is some problem when I use USB hub.

Disconnection happens on babble interrupt,

kernel print that I get,
---- "dsps_interrupt 401: CAUTION: musb: Babble Interrupt Occurred"

Again connection happens.
This disconnection/connection keeps on happening.
Pendrive does not get detected most of the time.

What is the solution for this?

Regards,

Gangadhar

over 10 years ago

0 Biser Gatchev-XID over 10 years ago

TI__Guru**** 393215 points

Hi Gangadhar,

What do you have connected to the hub?

0 -DK- over 10 years ago in reply to Biser Gatchev-XID

TI__Mastermind 27890 points

What model hub is attached? Have you tried different model hubs?

0 Gangadhar Gangu over 10 years ago in reply to -DK-

Expert 1865 points

The issue is fixed by disabling run time power management. Custom board does not have PMIC. Pendrive detection used to slow down, thought that system might be going to sleep. Something was messing up. Sometimes pendrive used to get detected when keys were pressed. Disabled run-time power management and the problem vanished. Don't know the exact reason.

Regards,

Gangadhar

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"dsps_interrupt 401: CAUTION: musb: Babble Interrupt Occurred", disconnection/connection, pendrive does not get detected