Hi, Kai Ruhnau <kai.ruhnau@xxxxxxxxxxxxx> writes: >>> I have activated CONFIG_USB_GADGET_DEBUG_FILES, and the contents of >>> /proc/driver/rndis-000 don't change when I pull the cable: >>> >>> Config Nr. 0 >>> used : y >>> state : RNDIS_DATA_INITIALIZED >>> medium : 0x00000000 >>> speed : 425984000 >>> cable : connected >>> vendor ID : 0x00000000 >>> vendor : (null) >>> >>> Only when changing the host to a Mac, it's different: >>> Config Nr. 0 >>> used : y >>> state : RNDIS_UNINITIALIZED >>> medium : 0x00000000 >>> speed : 425984000 >>> cable : connected >>> vendor ID : 0x00000000 >>> vendor : (null) >>> >>> Thanks for any help. >> >> Which peripheral controller is this board using? Is it chipidea? dwc2? >> dwc3? High Speed or Super Speed? > > According to the device tree it's 'fsl,imx6sx-usb' driven by chipidea/ci_hdrc_imx.c > When connecting to Windows, the dmesg shows: > configfs-gadget gadget: high-speed config #2: c Okay, adding Peter (chipidea maintainer) to the loop here. There are a few changes on UDC side of chipidea between 4.9 and 5.1: $ git --no-pager log --no-merges --oneline v4.9..v5.1 -- drivers/usb/chipidea/udc.c 16caf1fa37db usb: chipidea: Add dynamic pinctrl selection 51b751f112dc USB: chipidea: Remove redundant license text 5fd54ace4721 USB: add SPDX identifiers to all remaining files in drivers/usb/ fc5b920c3b9b usb: chipidea: do charger detection in vbus session 581821ae7f7e usb: chipidea: udc: Support SKB alignment quirk 734c58aefcc4 usb: chipidea: udc: compress return logic into line aa1f058d7d92 usb: chipidea: udc: fix NULL pointer dereference if udc_start failed a932a8041ff9 usb: chipidea: core: add sysfs group aeb78cda5100 usb: chipidea: use bus->sysdev for DMA configuration 4f4555cfe704 usb: chipidea: udc: update gadget state after bus resume afff6067b305 usb: chipidea: Drop lock across event_notify during gadget stop 732a4af85e87 usb: chipidea: Remove locking in ci_udc_start() 34445fb4333f usb: chipidea: Properly mark little endian descriptors 63b9e901e461 usb: chipidea: udc: remove unnecessary & operation a98e25e71d11 usb: chipidea: udc: make use of new usb_endpoint_maxp_mult() Peter, have you seen the problem described before? -- balbi
