[ 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" <jo...@kernel.org>:
> >> [ 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
