From mboxrd@z Thu Jan  1 00:00:00 1970
From: Gustavo Zacarias <gustavo@zacarias.com.ar>
Date: Thu, 30 Jan 2014 10:51:20 -0300
Subject: [Buildroot] udev and serial port
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On 01/30/2014 10:45 AM, Marco Trapanese wrote:

> Hello,
> in my buildroot environment I have udev enabled. I need to connect some
> UART-to-USB converter based upon FTDI chip (I added the libftdi in the
> config).
> 
> When I plug-in the converter to my target dmesg see the new hardware but
> I can't see any /dev/ttyUSB device.
> 
> Do I need to add something other in the configuration?
> Where should I search information about this "how-to"?
> 
> Thanks
> Marco

Hi.
libftdi is for direct access to FTDI chips from applications.
This is used for GPIO, bitbanging, SPI and other purposes.
What you want is to enable the CONFIG_USB_SERIAL_FTDI_SIO knob in your
linux kernel config.
Regards.