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? [1] http://patchwork.ozlabs.org/patch/776728/ Regards, Bin _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot