Running inference on Hexagon 686 DSP

[antonivanov-r]

Hello,
I've got a HExagon 686 DSP on my SoC on Android. NNAPI lacks HAL support unfortunately so the only way to utilize it is qualcomm sdk I guess. I tried building onnxruntime with qnn ep support and running it via Htp but it gives me an error during initialization and falling back to CPU. I guess it's because Hexagon 686 is a v66 DSP and doesn't support DSP inference.
I tried using qnn_options["backend_path"] = "libQnnDsp.so"; as well but only got a crash I guess it's because qnn ep doesn't support DSP inference.

My question is - how can I utilize v66 DSP using onnxruntime currently? I found that before onnxruntime had support for snpe which directly supported DSP but now it's dropped.