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USB1 HOST VBUS error workaround (delay coming) issue

Other Parts Discussed in Thread: AM3354, AM3359

Hi

In my board with am3354,  I found that the USB1 HOST is not work; The USB1_VBUS pin is fixed to connect with 5V  , and USB1_ID is connected to ground directly for USB1 HOST configure;

when power on the board, the logs show USB1 work at HOST mode, and USB1_DRVVBUS will have wave from Low to high, about several millisecond, the USB1_DRVVBUS be Low, then show a log message "VBUS error workaround (delay coming)";

Because USB1_VBUS pin is power by 5v directly, so I think regardless the USB1_DRVVBUS status, VBUS pin should detect a high status(>4.4V); So where maybe I mistake and need to check ?

below is the log of usb1:

root@am335x-evm:~# cat /proc/driver/musb_hdrc.1
Status: MHDRC, Mode=Host (Power=e0, DevCtl=88)
OTG state: a_wait_vfall; inactive
Options: pio, otg (peripheral+host), [eps=16]
Peripheral address: 00
Root port status: 00000100