On Thu, Jun 21, 2018 at 7:08 AM Fabio Estevam <festevam@xxxxxxxxx> wrote: > > Hi Andrey, > > On Thu, Jun 21, 2018 at 9:47 AM, Andrey Smirnov > <andrew.smirnov@xxxxxxxxx> wrote: > > > I never assumed it was a regression and that USB worked on RDU1 board > > before, so I never tried to see if this was a regression. I can only > > tell you that it hangs as soon as any PORTSC registers are accessed. > > I think we need to investigate this portsc register hang further. > I just finished experimenting with it on RDU1 and Babbage boards and I can't reproduce the hang that you describe against 4.18-rc1. At this point I wonder if it's the bootloader that is a variable that plays into this. I was booting both boards with 2018.06.0 version of barebox + the custom patches that can be found here https://github.com/ndreys/barebox/commits/rdu1-netboot. Note that the last patch in that branch/stack was added as a part of this investigation, but even before it, I was able to boot Linux just fine, albeit without working USB. Any chance you can try it on your end and see if that makes a difference? Thanks, Andrey Smirnov -- 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
