From mboxrd@z Thu Jan 1 00:00:00 1970 From: Eric Nelson Date: Wed, 17 Sep 2014 12:29:07 -0700 Subject: [U-Boot] Need help with u-boot problem with usb-keyboard / kvm switch In-Reply-To: <5419DCEA.1050507@redhat.com> References: <5419DCEA.1050507@redhat.com> Message-ID: <5419E103.2060607@boundarydevices.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 Hans, On 09/17/2014 12:11 PM, Hans de Goede wrote: > Hi Marek, et al, > > I'm working on cleaning up Luc's hdmi out support patchset for > sunxi. > > As part of this I want to also add support for usb keyboards, > so as to get a full console without needing to solder wires > to testpoints on some boards :) > > So when I plug in the usb coming from my kvm I get this: > > (Re)start USB... > USB0: USB EHCI 1.00 > scanning bus 0 for devices... EHCI timed out on TD - token=0x80008c80 > 3 USB Device(s) found > scanning usb for storage devices... 0 Storage Device(s) found > > And the usb keyboard does not work. > > If I plug in a single usb-2 hub (no ohci support for sunxi in u-boot > yet), then things do work, but after a few minutes of inactivity the > usb code starts spamming the console with: > > EHCI timed out on TD - token=0x80008c80 > EHCI timed out on TD - token=0x80008c80 > ... > > Could this be a problem with the phy settings (iow a sunxi specific > problem)? > Probably not. We've seen the same thing on SABRE Lite and Nitrogen6X boards. U-Boot > usb start ; setenv stdin serial,usbkbd (Re)start USB... USB0: USB EHCI 1.00 scanning bus 0 for devices... 2 USB Device(s) found USB1: USB EHCI 1.00 scanning bus 1 for devices... EHCI timed out on TD - token=0x80008c80 EHCI timed out on TD - token=0x80008c80 EHCI timed out on TD - token=0x80008c80 6 USB Device(s) found scanning usb for storage devices... 1 Storage Device(s) found scanning usb for ethernet devices... 0 Ethernet Device(s) found Timeout poll on interrupt endpoint Failed to get keyboard state from device 1c4f:0002 U-Boot > usb tree USB device tree: 1 Hub (480 Mb/s, 0mA) | u-boot EHCI Host Controller | +-2 Mass Storage (480 Mb/s, 100mA) Generic Mass Storage 4A3709D5 3 Hub (480 Mb/s, 0mA) | u-boot EHCI Host Controller | +-4 Hub (480 Mb/s, 2mA) | +-5 Human Interface (1.5 Mb/s, 100mA) | Logitech USB Optical Mouse | +-6 Hub (480 Mb/s, 100mA) | | USB 2.0 Hub | | | +-7 Human Interface (1.5 Mb/s, 98mA) | USB USB Keykoard | +-8 (12 Mb/s, 100mA) Oddly, the issue seems to be specific to **some** USB keyboards. We have some (mostly older) USB keyboards that just work and have had investigation on our to-do list for quite some time now. I was going to start with a question to the list: Is anyone else using USB keyboard support? USB mass storage seems to be pretty reliable. We have folks using it as an alternate boot for emergency situations. Regards, Eric