Hi Hans, On 5 January 2015 at 00:10, Hans de Goede <[email protected]> wrote: > 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.
I think Marek is busy for a while. I'd like to get PCI over the line first, and I have a few other things on my plate. But I think it would not be too difficult to move the usb_lowlevel_init() stuff into driver model. That would solve the primary problem I think. I'll see how things look later in the month. Regards, Simon _______________________________________________ U-Boot mailing list [email protected] http://lists.denx.de/mailman/listinfo/u-boot
