Hi, just to give a maybe final feedback on this topic: Although it is not a really satisfying solution, I decided to switch off the sysrq functionality by setting kernel.sysrq=0 in /etc/sysctl.conf. This was 1 month ago and there were no sysrq events in my logs since then. So for now this is a "good enough" solution for me. Thank you all for your support, I learned again a lot ...

You should check uboot logs if the dtbo is loaded correctly. You can get those using a debug serial console. If you don't know what that is or how to connect: https://debug.armbian.de

@blackc Exact the original U-boot DRAM settings from your boot.bin or an update. https://forum.armbian.com/topic/29794-how-to-install-armbian-in-h618/page/23/#findComment-218660 If you are still having issues ask the sunxi guys on IRC. https://oftc.catirclogs.org/linux-sunxi/2025-11-14

Hello, I've been using https://joshua-riek.github.io/ubuntu-rockchip-download/boards/orangepi-5-plus.html with a custom kernel that I built to activate my TPM2.0 device and it works. Now I'm asked to use an UEFI compatible image with my Orange Pi 5 Plus. So what I did is more or less the same thing that in here But instead of the legacy kernel I used the 6.1.115-rockchip-vendor-rk35xx kernel and my device booted, I got an HDMI output, etc. And then I updated it to my custom kernel (6.1.0-1027-rockchip) that has the necessary configurations to allow TPM over SPI. Now I'm trying to activate my TPM2.0 as I did before. To do that I added my compiled *.dtbo (rk3588-spi0-tpm-cs1.dtbo) to /boot/dtb/rockchip/overlay and activated it with armbian-config. After reboot this is my /boot/armbianEnv.txt orangepi@uefi-arm64:~$ cat /boot/armbianEnv.txt verbosity=1 bootlogo=true console=both extraargs=cma=256M overlay_prefix=rk3588 fdtfile=rockchip/rk3588-orangepi-5-plus.dtb rootdev=UUID=3e555b58-fdf4-4e2f-a3af-a8ecfd8034b6 rootfstype=ext4 overlays=spi0-tpm-cs1 param_spidev_spi_bus=0 However I still can't see my tpm under /dev/. I don't know what I'm missing, I'm quite new to this sorry Thank you for your time

Could you please tell me in detail how to use these files? My knowledge of Linux is very limited. Do I need to recompile a custom image suitable for myself, or how should I use these files to carry out specific operations to solve my problem? Thank you.