From: Greg KH <gregkh@linuxfoundation.org>
To: dima.pasechnik@cs.ox.ac.uk
Cc: linux-usb@vger.kernel.org
Subject: Re: usb 1-3: Product: BBC micro:bit CMSIS-DAP not recognised
Date: Mon, 19 Dec 2022 16:00:29 +0100 [thread overview]
Message-ID: <Y6B8jd7dHsa85Wny@kroah.com> (raw)
In-Reply-To: <Y6Bfx+Ksm/Qz3N8y@hilbert>
On Mon, Dec 19, 2022 at 12:57:43PM +0000, dima.pasechnik@cs.ox.ac.uk wrote:
> Hello,
>
> this is a popular in UK education board: https://microbit.org/
> - the currently sold (Version 2) one. It does on the same USB 3 things:
> mass storage, ACM, and serial. Serial appears unknown to the kernel.
>
> With Linux kernel 6.0.8 on x86_54, and various USB serial drivers installed, upon plugging into USB
> port, I see in dmesg:
>
> [45460.035306] usb 1-3: new full-speed USB device number 10 using xhci_hcd
> [45460.166959] usb 1-3: New USB device found, idVendor=0d28, idProduct=0204, bcdDevice=10.00
> [45460.166965] usb 1-3: New USB device strings: Mfr=1, Product=2, SerialNumber=3
> [45460.166967] usb 1-3: Product: BBC micro:bit CMSIS-DAP
> [45460.166968] usb 1-3: Manufacturer: Arm
> [45460.166970] usb 1-3: SerialNumber: 9905360200052833525e24a702a68552000000006e052820
> [45460.172168] usb-storage 1-3:1.0: USB Mass Storage device detected
> [45460.172538] scsi host1: usb-storage 1-3:1.0
> [45460.173203] cdc_acm 1-3:1.1: ttyACM0: USB ACM device
> [45460.175258] hid-generic 0003:0D28:0204.0005: hiddev96,hidraw0: USB HID v1.00 Device [Arm BBC micro:bit CMSIS-DAP] on usb-0000:00:14.0-3/input3
> [45460.175581] usbserial_generic 1-3:1.4: The "generic" usb-serial driver is only for testing and one-off prototypes.
> [45460.175585] usbserial_generic 1-3:1.4: Tell linux-usb@vger.kernel.org to add your device to a proper driver.
> [45460.175587] usbserial_generic 1-3:1.4: device has no bulk endpoints
> [45460.175818] usbserial_generic 1-3:1.5: The "generic" usb-serial driver is only for testing and one-off prototypes.
> [45460.175821] usbserial_generic 1-3:1.5: Tell linux-usb@vger.kernel.org to add your device to a proper driver.
> [45460.175823] usbserial_generic 1-3:1.5: generic converter detected
Is there some script adding this device id to the generic driver such
that you are binding to this device? Did the script come with the
device?
How well does it work? Why did the developer choose to use this generic
driver instead of a real one?
> [45460.175905] usb 1-3: generic converter now attached to ttyUSB0
It is not unknown, seems to bind here, but does it work?
thanks,
greg k-h
next prev parent reply other threads:[~2022-12-19 15:01 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-19 12:57 usb 1-3: Product: BBC micro:bit CMSIS-DAP not recognised dima.pasechnik
2022-12-19 15:00 ` Greg KH [this message]
2022-12-19 16:29 ` dima.pasechnik
2022-12-19 18:10 ` dima.pasechnik
2022-12-19 18:25 ` Greg KH
2022-12-19 22:20 ` dima.pasechnik
2022-12-19 23:36 ` Alan Stern
2022-12-20 13:08 ` dima.pasechnik
2022-12-23 14:50 ` Greg KH
2022-12-23 23:51 ` dima.pasechnik
2022-12-24 6:53 ` Greg KH
2022-12-25 11:08 ` dima.pasechnik
2022-12-25 18:52 ` Mike Spivey
2022-12-20 6:57 ` Greg KH
2022-12-20 14:50 ` dima.pasechnik
2022-12-20 19:57 ` Alan Stern
2022-12-22 10:32 ` Dima Pasechnik
2022-12-22 21:24 ` Alan Stern
2022-12-23 12:58 ` Dmitrii Pasechnik
2022-12-23 14:52 ` Alan Stern
2022-12-23 23:41 ` Dmitrii Pasechnik
2022-12-24 16:00 ` Alan Stern
2022-12-31 19:49 ` Jó Ágila Bitsch
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