[U-Boot] Need help with u-boot problem with usb-keyboard / kvm switch

[Hans de Goede <hdegoede@redhat.com>]

Hi Marek, et al,

I'm working on cleaning up Luc's hdmi out support patchset for
sunxi.

As part of this I want to also add support for usb keyboards,
so as to get a full console without needing to solder wires
to testpoints on some boards :)

So when I plug in the usb coming from my kvm I get this:

(Re)start USB...
USB0:   USB EHCI 1.00
scanning bus 0 for devices... EHCI timed out on TD - token=0x80008c80
3 USB Device(s) found
       scanning usb for storage devices... 0 Storage Device(s) found

And the usb keyboard does not work.

If I plug in a single usb-2 hub (no ohci support for sunxi in u-boot
yet), then things do work, but after a few minutes of inactivity the
usb code starts spamming the console with:

EHCI timed out on TD - token=0x80008c80
EHCI timed out on TD - token=0x80008c80
...

Could this be a problem with the phy settings (iow a sunxi specific
problem)?

When using the kvm on my pc, the tree structure looks like this:

/:  Bus 06.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/2p, 480M
    |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 480M
        |__ Port 4: Dev 4, If 0, Class=Mass Storage, Driver=usb-storage, 480M
    |__ Port 2: Dev 3, If 0, Class=Hub, Driver=hub/4p, 480M
        |__ Port 3: Dev 11, If 0, Class=Human Interface Device, Driver=usbhid, 1.5M
        |__ Port 4: Dev 9, If 0, Class=Hub, Driver=hub/4p, 12M
            |__ Port 1: Dev 10, If 0, Class=Human Interface Device, Driver=usbhid, 12M
            |__ Port 1: Dev 10, If 1, Class=Human Interface Device, Driver=usbhid, 12M
            |__ Port 1: Dev 10, If 2, Class=Human Interface Device, Driver=usbhid, 12M

Hmm, after a bit longer I also get these errors:

ERROR: v7_dcache_inval_range - start address is not aligned - 0xe59ff014

Could the problem be that the usb code is feeding unaligned buffers to the ehci
controller ?

Regards,

Hans