Hi Jochen, On 2019-02-08 20:35, Jochen Sprickerhof wrote: > Hi Marek, > > * Marek Szyprowski <m.szyprowski@xxxxxxxxxxx> [2019-02-08 13:36]: >>>>> On 21/01/19 16:02, Jochen Sprickerhof wrote: >>>> [..] >>>>>> I'm not sure why this it only works with the driver compiled into >>>>>> the >>>>>> kernel nor why it needs a hard reset or why it was the line was >>>>>> dropped >>>>>> when the patch was accepted. Would be great to get some feedback >>>>>> of the >>>>>> authors. >>>>> When XHCI driver is compiled into the kernel are the relevant PHY >>>>> drivers >>>>> compiled in as well? >>>> Only CONFIG_USB_PHY=y (I took the config from the >>>> linux-image-4.19.0-1-armmp_4.19.13-1_armhf.deb Debian package as a >>>> basis where this is the default). >> >> I confirm that on Odroid XU4 USB 3.0 works only when all related drivers >> (dwc3, xhci and exynos5 drd phy) are compiled into the kernel. If they >> are compiled as modules, USB 3.0 calibration doesn't work. The mentioned >> patch doesn't fix anything. > > I've just tried Linux v5.0-rc5 with the Debian config and > USB_XHCI_PLATFORM=y and it works, thanks! > > Is there a way to make it work with xhci compiled as a module, so it > would work in Debian out of the box? One more comment - 5000M mode will also work with everything compiled as modules (dwc3, exynos5 drd phy and xhci-plat) too. Just make sure that xhci-plat is loaded before dwc3. This would require some manual configuration, because autoloading will load xhci-plat after dwc3 probe and switch to host mode. Best regards -- Marek Szyprowski, PhD Samsung R&D Institute Poland
