Linux/AM3352: USB overcurrent

yimin bai34

Genius 4755 points

Part Number: AM3352

Tool/software: Linux

Hi Sir

We used TI AM335x 05.03.00.07 SDK for development and has usb current limit request.

When USB over current phenomenon happened , the log showed as below

musb-hdrc musb-hdrc.1: VBUS_ERROR in a_wait_vrise (80, <SessEnd), retry #3, port1 0008010c

Do we have any method to recover USB port to normal work after unplugging device except rebooting.

Please advise

BR
Yimin

over 4 years ago

0 RonB over 4 years ago

TI__Mastermind 30276 points

Yimin,

Thanks for the post. Unfortunately, the best person to respond is out for a couple of days and will not be able to reply until later this week. I'm sorry for the delay.

0 yimin bai34 over 4 years ago in reply to RonB

Genius 4755 points

Hi Sir

Any update

0 Bin Liu over 4 years ago in reply to yimin bai34

TI__Guru*** 125176 points

Hi,

Is this on your custom board or TI EVM? Please ensure the VBUS line has a >= 120uF capacitor near the USB receptacle. This is required by the USB SPec.

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Linux/AM3352: USB overcurrent