Hi All,

In EHCI Controller, external USB Hub is connected. We have 2 boards of same type. In Board1, external USB hub is detected properly and in board2, it is not detected properly.

In board2, got the error as:

usb_control_msg: request: 0x3, requesttype: 0x23, value 0x8 index 0x1 length 0x0 port 1 returns 0 usb_control_msg: request: 0x0, requesttype: 0xA3, value 0x0 index 0x1 length 0x4 Port 1 Status 101 Change 1 port 1 connection change usb_control_msg: request: 0x0, requesttype: 0xA3, value 0x0 index 0x1 length 0x4 portstatus 101, change 1, 12 Mb/s usb_control_msg: request: 0x1, requesttype: 0x23, value 0x10 index 0x1 length 0x0 hub_port_reset: resetting port 0... usb_control_msg: request: 0x3, requesttype: 0x23, value 0x4 index 0x1 length 0x0 Port Status Reg: 1801 reg=180B In port reset error code After Reset, Port Status: 180B USB Status: 8C usb_control_msg: request: 0x0, requesttype: 0xA3, value 0x0 index 0x1 length 0x4 portstatus 101, change 13, 12 Mb/s STAT_C_CONNECTION = 1 STAT_CONNECTION = 1 USB_PORT_STAT_ENABLE 0

Here, the device is not enabled and connection status change bit is set and the register is port status and control registers. This status is after the port feature reset.

In board1,the working log as:

usb_control_msg: request: 0x3, requesttype: 0x23, value 0x8 index 0x1 length 0x0 port 1 returns 0 usb_control_msg: request: 0x0, requesttype: 0xA3, value 0x0 index 0x1 length 0x4 Port 1 Status 101 Change 1 port 1 connection change usb_control_msg: request: 0x0, requesttype: 0xA3, value 0x0 index 0x1 length 0x4 portstatus 101, change 1, 12 Mb/s usb_control_msg: request: 0x1, requesttype: 0x23, value 0x10 index 0x1 length 0x0 hub_port_reset: resetting port 0... usb_control_msg: request: 0x3, requesttype: 0x23, value 0x4 index 0x1 length 0x0 Port Status Reg: 1801 reg=8001205 In port reset error code After Reset, Port Status: 8001205 USB Status: 8C usb_control_msg: request: 0x0, requesttype: 0xA3, value 0x0 index 0x1 length 0x4 portstatus 503, change 10, 480 Mb/s STAT_C_CONNECTION = 0 STAT_CONNECTION = 1 USB_PORT_STAT_ENABLE 1

The U-Boot version is: U-Boot 2011.12 and the external Hub is: USB2514B-AEZC.

Whether need to introduce the delay is some place or it is due to some other problem?

How it works in one board and not works in another board. Please share the suggestions.

-Thanks.