[U-Boot] [linux-sunxi] Mainline U-Boot, EHCI, usbkbd not working (workaround)

B.R. Oake
2015-01-04T18:21:58Z

(This started on the linux-sunxi mailing list but will hopefully be
of interest on the U-Boot list)

On 04/01/15 13:45, Lars Doelle wrote:
> while testing with mainline u-boot, I came over the
> problem, that the USB keyboard is not recognized.
>
> The device is an A20-OLinuXIno-LIME2. I used the
> current A20-OLinuXino-Lime2_defconfig for building.
>
> In my understanding, the issue should be reproducible
> with all devices having an EHCI root hub.
>
> ---
> sun7i# usb reset
> (Re)start USB...
> USB0: USB EHCI 1.00
> scanning bus 0 for devices... cannot reset port 1!?
> 1 USB Device(s) found
> USB1: USB EHCI 1.00
> scanning bus 1 for devices... 1 USB Device(s) found
> scanning usb for storage devices... 0 Storage Device(s) found
> sun7i# usb tree
> USB device tree:
> 1 Hub (480 Mb/s, 0mA)
> u-boot EHCI Host Controller
>
> 2 Hub (480 Mb/s, 0mA)
> u-boot EHCI Host Controller
> ---
>
> As a workaround, i plugged an USB hub in between:
> [...]

I also have this problem. I've tried three different USB keyboards on
an A20-Olinuxino-Micro and a Banana Pi, and I always get that error
"cannot reset port N!?" where N is whichever USB socket I've plugged
it into, and U-Boot cannot see the keyboard. Once Linux has loaded,
the keyboard works without any trouble.

Can anyone suggest what is causing this?

Thank you,
B.R. Oake.