Hi Hans,
On 4 January 2015 at 12:05, Hans de Goede hdegoede@redhat.com wrote:
Hi,
On 04-01-15 19:21, B.R. Oake wrote:
(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?
The problem is that u-boot does not allow building both ohci and ehci drivers into the same u-boot binary, so we cannot enable both usb-1 and usb-2 support at the same time.
So we're stuck with having only usb-2 support until someone reworks u-boot's usb code, and keyboards and mice are typically usb-1 devices, the workaround for this is to plug in a usb-2 hub so that the board sees a usb-2 device, and then plug the mouse / keyboard into that hub.
This could be solved by moving USB to driver model.
Marek do you know if anyone is looking at this?
Regards, Simon