Hi, On Wed, Jun 21, 2017 at 8:44 PM, Bin Meng <bmeng...@gmail.com> wrote: > Hi Stefan, > > On Wed, Jun 21, 2017 at 8:07 PM, Stefan Roese <s...@denx.de> wrote: >> Hi Bin, >> >> On 21.06.2017 12:24, Bin Meng wrote: >>> On Wed, Jun 21, 2017 at 5:28 PM, Stefan Roese <s...@denx.de> wrote: >> >> <snip> >> >>>> As you can see, the 2 USB mass storage devices which are connected >>>> to the xHCI HSIC port are only detected after a power-up and not >>>> after a system reset. >>>> >>>> Is this something that you can reproduce on your setup? Could you >>>> please check and let me know if this works for you or if you have >>>> an idea on this issue? >>> >>> I cannot reproduce this on MinnowMax board. My testing env is one USB >>> 2.0 flash disk connected to the upper port and another USB 3.0 flash >>> disk connected to the bottom port. Please check log below. >> >> Thanks for testing. This issue seems to be related to the HSIC ports >> only connected to the xHCI and not the EHCI. I did the same test with >> USB memory devices connected to the "normal" USB ports that are also >> connected to the EHCI and they "survive" the reset the same way >> as your test on MinnowMax shows. I assume that those HSIC ports are >> not available / connected on MinnowMax, right? >> > > Correct. There are no HSIC ports available on MinnowMax. > >> Do you by any chance have some ideas on why this might be handled >> differently on these HSIC ports? >> > > Maybe there are some quirks that the HSIC ports are having issues > after a reset. Like the issue I observed on the SS port as mentioned > in this patch [1] that SS port does not report CSC. > > Can you enable -DDEBUG and send me the log? >
Just in case others on the ML are interested, Stefan sent me the log offline. > [1] http://patchwork.ozlabs.org/patch/776728/ And to close this thread, the issue is related to the device connected to HSIC port was not properly reset after a 'reset' command. Regards, Bin _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot
