* pl2303 converter detected, unknown device type
@ 2021-11-23 7:16 Anton Lundin
2021-11-23 8:13 ` Johan Hovold
0 siblings, 1 reply; 6+ messages in thread
From: Anton Lundin @ 2021-11-23 7:16 UTC (permalink / raw)
To: linux-usb
I just picked up a new usb-rs232 adapter and was met by the following on
a modern kernel:
# uname -r
5.16.0-rc2
usb 3-7: new full-speed USB device number 5 using xhci_hcd
usb 3-7: New USB device found, idVendor=067b, idProduct=23a3, bcdDevice= 1.05
usb 3-7: New USB device strings: Mfr=1, Product=2, SerialNumber=0
usb 3-7: Product: ATEN USB to Serial Bridge
usb 3-7: Manufacturer: Prolific Technology Inc.
pl2303 3-7:1.0: pl2303 converter detected
pl2303 3-7:1.0: unknown device type, please report to linux-usb@vger.kernel.org
# lsusb -vv -d 067b:23a3
Bus 003 Device 005: ID 067b:23a3 Prolific Technology, Inc. ATEN USB to Serial Bridge
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x067b Prolific Technology, Inc.
idProduct 0x23a3
bcdDevice 1.05
iManufacturer 1 Prolific Technology Inc.
iProduct 2 ATEN USB to Serial Bridge
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 0x0027
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xbf
(Bus Powered)
Remote Wakeup
Battery Powered
MaxPower 100mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 3
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 0
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x000a 1x 10 bytes
bInterval 1
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
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
can't get device qualifier: Resource temporarily unavailable
can't get debug descriptor: Resource temporarily unavailable
Device Status: 0x0000
(Bus Powered)
But it worked on a bit older Debian Bullseye kernel:
# uname -r
5.10.0-8-amd64
usb 1-2: new full-speed USB device number 5 using xhci_hcd
usb 1-2: New USB device found, idVendor=067b, idProduct=23a3, bcdDevice= 1.05
usb 1-2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
usb 1-2: Product: ATEN USB to Serial Bridge
usb 1-2: Manufacturer: Prolific Technology Inc.
usbcore: registered new interface driver usbserial_generic
usbserial: USB Serial support registered for generic
usbcore: registered new interface driver pl2303
usbserial: USB Serial support registered for pl2303
pl2303 1-2:1.0: pl2303 converter detected
usb 1-2: pl2303 converter now attached to ttyUSB0
I'm guessing it just needs a case for this bcdDevice.
//Anton
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: pl2303 converter detected, unknown device type
2021-11-23 7:16 pl2303 converter detected, unknown device type Anton Lundin
@ 2021-11-23 8:13 ` Johan Hovold
2021-11-23 8:34 ` Anton Lundin
0 siblings, 1 reply; 6+ messages in thread
From: Johan Hovold @ 2021-11-23 8:13 UTC (permalink / raw)
To: Anton Lundin; +Cc: linux-usb
On Tue, Nov 23, 2021 at 08:16:13AM +0100, Anton Lundin wrote:
> I just picked up a new usb-rs232 adapter and was met by the following on
> a modern kernel:
>
> # uname -r
> 5.16.0-rc2
>
> usb 3-7: new full-speed USB device number 5 using xhci_hcd
> usb 3-7: New USB device found, idVendor=067b, idProduct=23a3, bcdDevice= 1.05
> usb 3-7: New USB device strings: Mfr=1, Product=2, SerialNumber=0
> usb 3-7: Product: ATEN USB to Serial Bridge
> usb 3-7: Manufacturer: Prolific Technology Inc.
> pl2303 3-7:1.0: pl2303 converter detected
> pl2303 3-7:1.0: unknown device type, please report to linux-usb@vger.kernel.org
> I'm guessing it just needs a case for this bcdDevice.
Indeed, and thanks for reporting this. I'll add the missing entry.
Do you know what kind of PL2303 this is (e.g. PL2303GC)?
Johan
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: pl2303 converter detected, unknown device type
2021-11-23 8:13 ` Johan Hovold
@ 2021-11-23 8:34 ` Anton Lundin
2021-11-23 8:59 ` Johan Hovold
0 siblings, 1 reply; 6+ messages in thread
From: Anton Lundin @ 2021-11-23 8:34 UTC (permalink / raw)
To: Johan Hovold; +Cc: linux-usb
On 23 November, 2021 - Johan Hovold wrote:
> On Tue, Nov 23, 2021 at 08:16:13AM +0100, Anton Lundin wrote:
> > I just picked up a new usb-rs232 adapter and was met by the following on
> > a modern kernel:
> >
> > # uname -r
> > 5.16.0-rc2
> >
> > usb 3-7: new full-speed USB device number 5 using xhci_hcd
> > usb 3-7: New USB device found, idVendor=067b, idProduct=23a3, bcdDevice= 1.05
> > usb 3-7: New USB device strings: Mfr=1, Product=2, SerialNumber=0
> > usb 3-7: Product: ATEN USB to Serial Bridge
> > usb 3-7: Manufacturer: Prolific Technology Inc.
> > pl2303 3-7:1.0: pl2303 converter detected
> > pl2303 3-7:1.0: unknown device type, please report to linux-usb@vger.kernel.org
>
> > I'm guessing it just needs a case for this bcdDevice.
>
> Indeed, and thanks for reporting this. I'll add the missing entry.
>
> Do you know what kind of PL2303 this is (e.g. PL2303GC)?
Sorry nope. The device is potted with some kind of opaque plastic, so I
can see that there are two qfp's on the board, but not the numbers on
them.
If there is some way of identifying the chip I can build a custom driver
that can read out any information if that helps.
//Anton
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: pl2303 converter detected, unknown device type
2021-11-23 8:34 ` Anton Lundin
@ 2021-11-23 8:59 ` Johan Hovold
0 siblings, 0 replies; 6+ messages in thread
From: Johan Hovold @ 2021-11-23 8:59 UTC (permalink / raw)
To: Anton Lundin; +Cc: linux-usb
On Tue, Nov 23, 2021 at 09:34:30AM +0100, Anton Lundin wrote:
> On 23 November, 2021 - Johan Hovold wrote:
>
> > On Tue, Nov 23, 2021 at 08:16:13AM +0100, Anton Lundin wrote:
> > > I just picked up a new usb-rs232 adapter and was met by the following on
> > > a modern kernel:
> > >
> > > # uname -r
> > > 5.16.0-rc2
> > >
> > > usb 3-7: new full-speed USB device number 5 using xhci_hcd
> > > usb 3-7: New USB device found, idVendor=067b, idProduct=23a3, bcdDevice= 1.05
> > > usb 3-7: New USB device strings: Mfr=1, Product=2, SerialNumber=0
> > > usb 3-7: Product: ATEN USB to Serial Bridge
> > > usb 3-7: Manufacturer: Prolific Technology Inc.
> > > pl2303 3-7:1.0: pl2303 converter detected
> > > pl2303 3-7:1.0: unknown device type, please report to linux-usb@vger.kernel.org
> >
> > > I'm guessing it just needs a case for this bcdDevice.
> >
> > Indeed, and thanks for reporting this. I'll add the missing entry.
> >
> > Do you know what kind of PL2303 this is (e.g. PL2303GC)?
>
> Sorry nope. The device is potted with some kind of opaque plastic, so I
> can see that there are two qfp's on the board, but not the numbers on
> them.
Ok, thanks for checking. Judging from the Prolific site the only G type
device that comes in a QFP type package appears to be PL2303GC.
> If there is some way of identifying the chip I can build a custom driver
> that can read out any information if that helps.
Thanks. Currently bcdDevice is the only known way to do this, but I may
get back to you on this later.
Let's assume it's a PL2303GC for now.
Johan
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: pl2303 converter detected, unknown device type
2022-06-19 9:10 Giles Roadnight
@ 2022-06-20 7:15 ` Johan Hovold
0 siblings, 0 replies; 6+ messages in thread
From: Johan Hovold @ 2022-06-20 7:15 UTC (permalink / raw)
To: Giles Roadnight; +Cc: glance, linux-usb
On Sun, Jun 19, 2022 at 10:10:37AM +0100, Giles Roadnight wrote:
> Was there ever any resolution to this? I am having the same issue and
> have tried multiple combinations of different Raspberry pi os and pi
> and get the same issue.
>
> Johan - did you add support for this model? If so how to update to the
> latest version so that I can use this usb device?
You appear to have a different device than the one Anton reported (e.g.
PL2303GS instead of PL2303GC), but the fix is similar and was
merged in March as I just mentioned in my other mail.
> (forgive the basic questions, I am not very experienced with linux so
> don't know what bit I need to update to get the latest usb drivers -
> or whatever it is you updated)
Just make sure you update to a recent mainline or stable kernel (e.g.
5.17.2, 5.16.19, 5.15.33 or newer) or wait until your distro kernel
catches up.
The commit you need is
5b6ab28d0678 ("USB: serial: pl2303: fix GS type detection")
if you want to report it to the distro.
Johan
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: pl2303 converter detected, unknown device type
@ 2022-06-19 9:10 Giles Roadnight
2022-06-20 7:15 ` Johan Hovold
0 siblings, 1 reply; 6+ messages in thread
From: Giles Roadnight @ 2022-06-19 9:10 UTC (permalink / raw)
To: johan; +Cc: glance, linux-usb
Was there ever any resolution to this? I am having the same issue and
have tried multiple combinations of different Raspberry pi os and pi
and get the same issue.
Johan - did you add support for this model? If so how to update to the
latest version so that I can use this usb device?
(forgive the basic questions, I am not very experienced with linux so
don't know what bit I need to update to get the latest usb drivers -
or whatever it is you updated)
Thanks
Giles Roadnight
http://giles.roadnight.name
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2022-06-20 7:15 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-11-23 7:16 pl2303 converter detected, unknown device type Anton Lundin
2021-11-23 8:13 ` Johan Hovold
2021-11-23 8:34 ` Anton Lundin
2021-11-23 8:59 ` Johan Hovold
2022-06-19 9:10 Giles Roadnight
2022-06-20 7:15 ` Johan Hovold
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