[ Reshuffling your reply, and responding inline below ] On Mon, Aug 20, 2018 at 04:27:37PM +0300, Алексей Болдырев wrote: > > 20.08.2018, 11:42, "Johan Hovold" <johan@xxxxxxxxxx>: > >> [ Adding linux-usb on CC. ] > >> > >> On Fri, Aug 17, 2018 at 10:41:20PM +0300, Алексей Болдырев wrote: > >>> please add support to device from cdc-acm: > >>> > >>> Bus 004 Device 003: ID 1782:3d00 Spreadtrum Communications Inc. > >> > >> Can you please post the output of "lsusb -v" for this device? > Bus 004 Device 004: ID 1782:3d00 Spreadtrum Communications Inc. > Couldn't open device, some information will be missing > Device Descriptor: > bLength 18 > bDescriptorType 1 > bcdUSB 1.10 > bDeviceClass 0 (Defined at Interface level) > bDeviceSubClass 0 > bDeviceProtocol 0 > bMaxPacketSize0 64 > idVendor 0x1782 Spreadtrum Communications Inc. > idProduct 0x3d00 > bcdDevice 0.01 > iManufacturer 0 > iProduct 0 > iSerial 0 > bNumConfigurations 1 > Configuration Descriptor: > bLength 9 > bDescriptorType 2 > wTotalLength 55 > bNumInterfaces 2 > bConfigurationValue 1 > iConfiguration 0 > bmAttributes 0xc0 > Self Powered > MaxPower 100mA > Interface Descriptor: > bLength 9 > bDescriptorType 4 > bInterfaceNumber 0 > bAlternateSetting 0 > bNumEndpoints 2 > bInterfaceClass 255 Vendor Specific Class > bInterfaceSubClass 0 > bInterfaceProtocol 0 > iInterface 0 > Endpoint Descriptor: > bLength 7 > bDescriptorType 5 > bEndpointAddress 0x81 EP 1 IN > bmAttributes 2 > Transfer Type Bulk > Synch Type None > Usage Type Data > wMaxPacketSize 0x0040 1x 64 bytes > bInterval 0 > Endpoint Descriptor: > bLength 7 > bDescriptorType 5 > bEndpointAddress 0x02 EP 2 OUT > bmAttributes 2 > Transfer Type Bulk > Synch Type None > Usage Type Data > wMaxPacketSize 0x0040 1x 64 bytes > bInterval 0 > Interface Descriptor: > bLength 9 > bDescriptorType 4 > bInterfaceNumber 1 > bAlternateSetting 0 > bNumEndpoints 2 > bInterfaceClass 255 Vendor Specific Class > bInterfaceSubClass 0 > bInterfaceProtocol 0 > iInterface 0 > Endpoint Descriptor: > bLength 7 > bDescriptorType 5 > bEndpointAddress 0x83 EP 3 IN > bmAttributes 2 > Transfer Type Bulk > Synch Type None > Usage Type Data > wMaxPacketSize 0x0040 1x 64 bytes > bInterval 0 > Endpoint Descriptor: > bLength 7 > bDescriptorType 5 > bEndpointAddress 0x04 EP 4 OUT > bmAttributes 2 > Transfer Type Bulk > Synch Type None > Usage Type Data > wMaxPacketSize 0x0040 1x 64 bytes > bInterval 0 Thanks for the details. This isn't a CDC device, so this probably needs to be handled by a USB serial driver. What kind of device is it? Does it have more than one port? Judging from the above you should get two ttyUSBx devices if you do: # modprobe usbserial # echo 1782 3d00 > /sys/bus/usb-serial/drivers/generic/new_id as root. Are those two ports usable? Thanks, Johan
