Hi All, Let's me explain the story first. We need NEC pci-to-usb host controller work on U-boot. Because using Faraday technology PCI controller, I need to complete the PCI driver first. Now the PCI driver is completed. At this time, the NEC host controller can work. When plugging a keyboard, 2 devices can be found showing on console. But things are not as easy as we think, OHCI host controller encounter an "Unrecoverable Error" when getting device descriptor from keyboard. In the Linux kernel, I found that there is a workaround if the OHCI host controller is NEC's. The following link explain more detail: http://www.mail-archive.com/linux-usb-devel@lists.sourceforge.net/msg54465.h.... After looking at the source code in U-boot, it seems that there isn't any workaround about the NEC's bug ? Any idea about how to get the controller, or do I need to implement the workaround by myself ??
The following is the debug message when "usb start": NDS32 # usb start (Re)start USB... USB: ftpci pci_find_devices OHCI pci controller (1033, 0035) found @(0:8:0) OHCI regs address 0xa0000000 scanning bus for devices... New Device 0 usb_control_msg: request: 0x6, requesttype: 0x80, value 0x100 index 0x0 length 0x40 set address 1 usb_control_msg: request: 0x5, requesttype: 0x0, value 0x1 index 0x0 length 0x0 usb_control_msg: request: 0x6, requesttype: 0x80, value 0x100 index 0x0 length 0x12 usb_control_msg: request: 0x6, requesttype: 0x80, value 0x200 index 0x0 length 0x9 usb_control_msg: request: 0x6, requesttype: 0x80, value 0x200 index 0x0 length 0x19 get_conf_no 0 Result 25, wLength 25 if 0, ep 0 ##EP epmaxpacketin[1] = 2 set configuration 1 usb_control_msg: request: 0x9, requesttype: 0x0, value 0x1 index 0x0 length 0x0 new device strings: Mfr=0, Product=1, SerialNumber=0 usb_control_msg: request: 0x6, requesttype: 0x80, value 0x300 index 0x0 length 0xFF USB device number 1 default language ID 0x409 usb_control_msg: request: 0x6, requesttype: 0x80, value 0x301 index 0x409 length 0xFF Manufacturer Product OHCI Root Hub SerialNumber USB hub found usb_control_msg: request: 0x6, requesttype: 0xA0, value 0x2900 index 0x0 length 0x4 usb_control_msg: request: 0x6, requesttype: 0xA0, value 0x2900 index 0x0 length 0x9 3 ports detected ganged power switching standalone hub individual port over-current protection power on to power good time: 30ms hub controller current requirement: 0mA port 1 is removable port 2 is removable port 3 is removable usb_control_msg: request: 0x0, requesttype: 0xA0, value 0x0 index 0x0 length 0x4 get_hub_status returned status 0, change 0 local power source is good no over-current condition exists enabling power on all ports usb_control_msg: request: 0x3, requesttype: 0x23, value 0x8 index 0x1 length 0x0 port 1 returns 0 usb_control_msg: request: 0x3, requesttype: 0x23, value 0x8 index 0x2 length 0x0 port 2 returns 0 usb_control_msg: request: 0x3, requesttype: 0x23, value 0x8 index 0x3 length 0x0 port 3 returns 0 usb_control_msg: request: 0x0, requesttype: 0xA3, value 0x0 index 0x1 length 0x4 Port 1 Status 100 Change 0 usb_control_msg: request: 0x0, requesttype: 0xA3, value 0x0 index 0x2 length 0x4 Port 2 Status 301 Change 1 port 2 connection change usb_control_msg: request: 0x0, requesttype: 0xA3, value 0x0 index 0x2 length 0x4 portstatus 301, change 1, 1.5 Mb/s usb_control_msg: request: 0x1, requesttype: 0x23, value 0x10 index 0x2 length 0x0 hub_port_reset: resetting port 1... usb_control_msg: request: 0x3, requesttype: 0x23, value 0x4 index 0x2 length 0x0 usb_control_msg: request: 0x0, requesttype: 0xA3, value 0x0 index 0x2 length 0x4 portstatus 303, change 10, 1.5 Mb/s STAT_C_CONNECTION = 0 STAT_CONNECTION = 1 USB_PORT_STAT_ENABLE 1 usb_control_msg: request: 0x1, requesttype: 0x23, value 0x14 index 0x2 length 0x0 New Device 1 usb_control_msg: request: 0x6, requesttype: 0x80, value 0x100 index 0x0 length 0x40 ERROR: OHCI Unrecoverable Error, controller usb-ohci_ftpci disabled usb_new_device: usb_get_descriptor() failed hub: disabling port 2 usb_control_msg: request: 0x1, requesttype: 0x23, value 0x1 index 0x2 length 0x0 usb_control_msg: request: 0x0, requesttype: 0xA3, value 0x0 index 0x3 length 0x4 Port 3 Status 100 Change 0 2 USB Device(s) found drv_usb_kbd_init scan end
Best Regards, Gavin Guo