Part Number: AM4382
Hi,
Here, We are attaching a USB device to am438x epos evm Board on usb type A host. And we are getting log as follow.
usb usb1-port1: Cannot enable. Maybe the USB cable is bad?
usb usb1-port1: Cannot enable. Maybe the USB cable is bad?
usb usb1-port1: attempt power cycle
usb usb1-port1: Cannot enable. Maybe the USB cable is bad?
usb usb1-port1: Cannot enable. Maybe the USB cable is bad?
usb usb1-port1: unable to enumerate USB device
If we connect the same device on another board and PC, Device is detected successfully.
Now, we connect the same device to micro-usb port(client) of am438x epos-evm board and we got log as follow.
xhci-hcd xhci-hcd.4.auto: xHCI Host Controller
xhci-hcd xhci-hcd.4.auto: new USB bus registered, assigned bus number 3
xhci-hcd xhci-hcd.4.auto: hcc params 0x0238f06d hci version 0x100 quirks 0x02010010
xhci-hcd xhci-hcd.4.auto: irq 262, io mem 0x48390000
hub 3-0:1.0: USB hub found
hub 3-0:1.0: 1 port detected
xhci-hcd xhci-hcd.4.auto: xHCI Host Controller
xhci-hcd xhci-hcd.4.auto: new USB bus registered, assigned bus number 4
usb usb4: We don't know the algorithms for LPM for this host, disabling LPM.
hub 4-0:1.0: USB hub found
hub 4-0:1.0: 1 port detected
xhci-hcd xhci-hcd.4.auto: remove, state 1
usb usb4: USB disconnect, device number 1
xhci-hcd xhci-hcd.4.auto: USB bus 4 deregistered
xhci-hcd xhci-hcd.4.auto: remove, state 1
usb usb3: USB disconnect, device number 1
xhci-hcd xhci-hcd.4.auto: USB bus 3 deregistered
Now, The questions are,
1.> Why usb device can not detected, we cheked power rating, usb connection and this are perfect and max curren required for this usb device is 120mA. We replaced cable but same issue.
2.>Is there any driver changes required according to above log?