From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hans de Goede Date: Sun, 04 Jan 2015 20:05:20 +0100 Subject: [U-Boot] [linux-sunxi] Mainline U-Boot, EHCI, usbkbd not working (workaround) In-Reply-To: <54A984C6.50007@openmailbox.org> References: <2396754.FY5fnKSFZ8@x64.localnet> <54A984C6.50007@openmailbox.org> Message-ID: <54A98EF0.6080209@redhat.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de 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. Regards, Hans > > Thank you, > B.R. Oake. >