Bug Report: Orange Pi 5 Max UART2 M0 Device Tree Overlay

[joeyboey]

What happened?

Razberry Zwave UART Adapter

I tried moving my Home Server Setup to the Orange Pi 5 Max Board. Unfortunately i can't get the UART2 Port to work.

I added the following line to the u-boot file according to the manual:

U_BOOT_FDT_OVERLAYS="device-tree/rockchip/overlay/rk3588-uart2-m0.dtbo"

Everything else is commented out, the full file looks like this:

## /etc/default/u-boot - configuration file for u-boot-update(8)

#U_BOOT_UPDATE="true"

#U_BOOT_ALTERNATIVES="default recovery"
#U_BOOT_DEFAULT="l0"
#U_BOOT_PROMPT="1"
#U_BOOT_ENTRIES="all"
#U_BOOT_MENU_LABEL="Debian GNU/Linux"
#U_BOOT_PARAMETERS="ro earlycon"
#U_BOOT_ROOT=""
#U_BOOT_TIMEOUT="50"
#U_BOOT_FDT=""
#U_BOOT_FDT_DIR="/lib/firmware/"
#U_BOOT_FDT_OVERLAYS=""
#U_BOOT_FDT_OVERLAYS_DIR="/lib/firmware/"
#U_BOOT_SYNC_DTBS="false"
U_BOOT_FDT_OVERLAYS="device-tree/rockchip/overlay/rk3588-uart2-m0.dtbo"

The reboot after applying the chages fails until i remove the Razberry Adapter. The Pi is just stuck on the teal Power LED.
The Pi does boot normally when the UART Adapter is removed.
The Adapter ist working fine, as it was in constant use just before the switch.

Thanks for your help!

Kernel version

6.1.0-1025-rockchip

SBC model

Orange Pi 5 Max

What operating system are you seeing this problem on?

Ubuntu 24.04 LTS (Noble Nombat)

Relevant logs

No response