Hello, I'm writing serial tty driver (it's SPI/UART converter) and I get inspired by this driver: https://github.com/raspberrypi/linux/blob/rpi-5.15.y/drivers/tty/serial/sc16is7xx.c I have driver probed and also added port to driver which I see in console: [ 2616.826105] spi0.0: ttyTX0 at I/O 0x1 (irq = 0, base_baud = 9375) is a test_driver so I should see it in /dev/ttyTX0 but it seems node is not created. Udev is running on a platform. Any ideas what can cause this? Thanks and regards, marek -- as simple and primitive as possible ------------------------------------------------- Marek Belisko - OPEN-NANDRA Freelance Developer Ruska Nova Ves 219 | Presov, 08005 Slovak Republic Tel: +421 915 052 184 skype: marekwhite twitter: #opennandra web: http://open-nandra.com