It seems just part of your device tree rather than the full one.
Please refer to Issue with enabling UARTB serial@3110000 on Orin NX with L4T 36.3 - #3 by KevinFFF to add aliases for your current serial@3110000
If you want to use this interface with Tegra High Speed Uart driver, please modify the following:
serial@3110000 {
- compatible = "nvidia,tegra234-uart", "nvidia,tegra20-uart";
+ compatible = "nvidia,tegra194-hsuart";