Problem with UART on SAMD51J20.

[tanreb1]

Hi everybody!

I'm using chip ATSAMD51J20A with I2C and UART. I prepared my own dts for the board. Project compile as well, but I can't send the data via UART (sercom). The device function device_get_binding doesn't return an error. Pinmux and dts looks like configured ok, but I don't know.

The uart console (sercom5) works very well. There is a problem with another sercoms (2 & 3)

For these sercoms function uart_tx return value 35 (ENOTSUP - not supported). It's weird because the board has support uart on this pins and sercom. The all definitions in proj.conf I have enable

Maybe someone knows this problem and can help me it to solve

prj.conf:
CONFIG_SOC_SERIES_SAMD51=y CONFIG_SOC_PART_NUMBER_SAMD51J20A=y CONFIG_BUILD_OUTPUT_HEX=y CONFIG_SOC_ATMEL_SAMD5X_OSCULP32K_AS_MAIN=y CONFIG_CORTEX_M_SYSTICK=y CONFIG_ARM_MPU=y CONFIG_CONSOLE=y CONFIG_UART_CONSOLE=y CONFIG_UART_SAM0=y CONFIG_UART_INTERRUPT_DRIVEN=y CONFIG_I2C=y CONFIG_I2C_SAM0=y CONFIG_SERIAL=y CONFIG_PINMUX=y

DTS: (https://pastebin.com/HRqi42MT)
Pinmux: (https://pastebin.com/z3RjpEjU)