Hi,
On 05-01-15 03:49, Simon Glass wrote:
Hi Hans,
On 4 January 2015 at 12:05, Hans de Goede <[email protected]> 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.
Yes, that is what I was thinking too.
Marek do you know if anyone is looking at this?
Actually I was about to ask you (Simon) if you are looking into converting
the usb stuff to dm, AFAIK no one else is working on this.
Regards,
Hans
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