NPU Support

_Alex_ — Fri, 15 Jul 2022 20:28:46 GMT

Hello,

We are trying to get NPU running on a IMX8Plus, and are often ending up with warnings about unsupported evis version. We were starting with an "imx-image-multimedia" build and adding the packagegroup-imx-ml on top of that and not having much luck.

We ended up putting on a an imx-image-full build onto a couple systems and two of the three SOM's we had worked, but one still reported unsupported evis version when running samples. Looking into the differences we noticed the not working system had some things like "vipsi" and "dsp" in /sys/devices/platform/, but the SOM that didn't work doesn't have these.

Any ideas as to what the minimum set of features required to get ML examples working on NPU is?
Any idea why some boards would have VIPSI/DSP and others wouldn't?

38500000.vipsi

3b6e8000.dsp

Thanks,

Alex

Re: NPU Support

Zhiming_Liu — Thu, 21 Jul 2022 07:43:17 GMT

Hi @_Alex_

Please check the log about npu in kernel

Re: NPU Support

_Alex_ — Thu, 21 Jul 2022 14:42:44 GMT

I don't totally understand what you mean by check the log about the NPU in the kernel, however we did realize that we had a mixture of SOM's with and without NPU and that was the main issue.

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NPU Support

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Re: NPU Support