CP210x not support CP2104 device

[Nuno Lambuca]

I am trying to use CP2104 (Silicon Labs), which should be support by CP210X driver and I am not able to get good baud rate or even to modify it. Bit time 40nS which means really high speed. Using Ubuntu kernel driver for it.
Is the kernel driver supposed to handle CP2104? May I have access to kernel CP210x driver so that I would "modify" it to support CP2104?
What are the steps to reconfigure (re-compile) the driver?

Thanks
Nuno

[Nuno Lambuca (nunolambuca)]

Hi,
I know already what is the problem. The CP210x kernel driver was not designed using the most standard protocol, meaning, new devices do not implement that function (set baud div).
I am modifying driver and let you know afterwards result.

[Nuno Lambuca (nunolambuca)]

OK, I tested and works OK. SOLVED.
I built my own kernel with new my modified driver and works perfect.

Not sure how to modify driver file so that it could be kernel updated....

[tutuba (tububa)]

Hi Nuno Lambuca.
i have the same problem like you ,could you tell me the way to fix it? Thanks a lot!
my mail-address is <email address hidden>

[sunrise1002 (sch0828)]

Hi Nuno,

me to with the same problem,
can you show the slution? thank you.

[Brad Figg (brad-figg)]

This bug is missing log files that will aid in dianosing the problem. From a terminal window please run:

apport-collect 793261

and then change the status of the bug back to 'New'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]

[bigx (xavier-seignard)]

Any updates? It seems it is still not solved in ubuntu 15.04.

Regards

[Andrew (keen101)]

Running PopOS 19.10

There seems to be no support for CP2104 in the default kernel!

This makes uploading to the new Adafruit feather arduino's difficult.

[You-Sheng Yang (vicamo)]

@Andrew, cp210x is the kernel driver for such devices. Please file a new bug and attach `lsusb -v -v -v` info if you still unable activate it.