> From: Stephen Warren [mailto:swarren@xxxxxxxxxxxxx] > Sent: Tuesday, July 02, 2013 7:41 PM > > On 07/02/2013 07:47 PM, Stephen Warren wrote: > > On 06/26/2013 02:20 PM, Paul Zimmerman wrote: > ... > >> I hope whoever is supporting the Pi in the mainline kernel will try adding > >> dwc2 support now that it seems to be working. I'm not sure who that would > >> be, though. > > > > Well, it appears to work! I tested it on both a model A and B (rev 2) > > and devices enumerate on the bus OK now. I haven't actually tested data > > transfer yet though. > > ... although unfortunately, pretty much any use of the USB devices > crashes or hangs the kernel:-( I guess due to the wildly varying > symptoms, there is some random memory corruption going on. > > I did manage to dd about 1MiB off an SD card in a USB->SD card adapter > (with powered hub between the adapter and the Pi), but often just > plugging in the card or having it plugged in during boot causes hangs > and crashes. Similarly, I have a ZD1211 WiFi USB adapter, and having > that plugged during boot in causes all kinds of oops within a few or > tens of seconds after booting, in code unrelated to USB or networking. > > Paul, are you able to try out upstream Linux and see what the issue > might be? The following G+ post should outline the steps required: > > https://plus.google.com/101715070573995136397/posts/gWkwrfNfYVm > > although these days you might want to use u-boot.git not u-boot-arm.git > (or perhaps git://github.com/swarren/u-boot.git rpi_dev), and > git://github.com/swarren/linux-rpi.git rpi_dev to get the USB enabled. Hi Stephen, As I mentioned in private email, I was not able to get your mainline-based kernel from git://github.com/swarren/linux-rpi.git to boot. I would appreciate if you could send me your compiled u-boot.bin and boot.scr.uimg, in case the problem is with compiling u-boot. And also your kernel .config. I suspect the majority of the issues you saw are due to missing dt support for several of the module parameters that need to be set to non-default values for the pi, like the DMA mode and the FIFO sizes. I did some more extensive testing with the driver on the downstream Pi kernel. Keyboard, mouse, hub, and mass-storage seem to be working OK. I did see a driver crash with a wireless adapter, I will debug that when I get some time. -- Paul -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
