NPU and RKLLM support on Rockchip RK3588 (NanoPC-T6) and RK3576 (NanoPi M5)

[fever_wits]

Hello,

I am currently working on a project involving local LLM inference on Rockchip SoCs using the rknn-llm framework. I have two specific questions regarding Armbian support for the NPU:
 1. NanoPi M5 (RK3576): FriendlyElec recently released the NanoPi M5 based on the RK3576. If I use the Armbian image for this board, will I be able to run LLM models using the NPU? I am considering purchasing this board for LLM
    testing and would like to know if the driver support is already there.
 2. NanoPC-T6 (RK3588): I have a NanoPC-T6 running Armbian, but I cannot find the /dev/rknpu device node. I have tested this with both 6.1.115-vendor-rk35xx and 6.12.58-current-rockchip64 kernels, but the NPU device is not appearing.
    Is there a specific overlay or a manual configuration step needed to enable NPU support on these kernels?
 tried adding tags npu and nanopi m5, but there was no such option.
I am happy to provide any additional information, logs (such as `armbianmonitor -u`), or command outputs if needed to help diagnose the issue.
Thank you in advance for your help and guidance!

Best regards,
A.H.