Hi Gavin ,
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 ??
are you sure it is that NEC bug? We had a similar error message when the PCI bridge was not properly setup and the OHCI could not access RAM through PCI (DMA), hence the "unrecoverable error".
Martin