linux-kernel - Re: [EXT] Re: [PATCH 0/8] ethosu: Add Arm Ethos-U driver

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Message-ID: <2023061646-coil-broadly-9efc@gregkh>
Date:   Fri, 16 Jun 2023 11:04:21 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Alison Wang <alison.wang@....com>
Cc:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        Leo Li <leoyang.li@....com>, Forrest Shi <xuelin.shi@....com>,
        "X.F. Ren" <xiaofeng.ren@....com>, Feng Guo <feng.guo@....com>
Subject: Re: [EXT] Re: [PATCH 0/8] ethosu: Add Arm Ethos-U driver

On Fri, Jun 16, 2023 at 08:26:28AM +0000, Alison Wang wrote:
> 
> On Fri, Jun 16, 2023 at 01:59:05PM +0800, Alison Wang wrote:
> > This series contains Arm's NPU Ethos-U driver for NXP i.MX93 platform.
> >
> > Ethos-U Linux driver is to provide an example of how a rich operating 
> > system like Linux can dispatch inferences to an Arm Cortex-M 
> > subsystem, consisting of an Arm Cortex-M and an Arm Ethos-U NPU.
> 
> What is an "inference"?
> [Alison Wang] The inference here means machine learning inference. It is the process of
> running data points into a machine learning model to calculate an output such as a single 
> numerical score. For example, we use this driver, user space application and Cortex-M firmware
> to complete an inference about image classification.

Nice, so why isn't this under drivers/accel/ then?  Does it not need
that framework?

> Where are the userspace tools (if any) that are needed for this driver to work properly?
> [Alison Wang] You could refer to https://github.com/nxp-imx/ethos-u-driver-stack-imx.git .

Please put that in the documentation for the commit.

thanks,

greg k-h