USBHOST not working in CCIMX6UL with yocto 2.2-r2 release

Dear all,
I have noticed that from Yocto version 2.2-r2 FTDI devices are not recognized when connected into any of USB host ports. In previous versions (2.0-r5), when this device was connected, it appeared in as /etc/ttyUSB0 and worked correctly. Any idea or suggestion why this is happenning?
It doesn’t work either with version 2.2-r1.
Thank you very much for your kind cooperation.

Yes, we decided to disable all unused kernel modules in order to save space in the rootfs. As you know, in the 256MiB CC6UL variant space is really valuable.

You can easily re-add the module.
So to re-enable USB host support you need to reconfigure the kernel by adding appropriate drivers to the kernel or as modules, then rebuild kernel/boot image
specifically, the Kconfig entry in your case is:


Thank you very much for your feedback! It is working now.

In which file the entry CONFIG_USB_SERIAL_FTDI_SIO
has to be inserted?
I’m using dey-2.6, board is ConnectCore 6UL SBC.