linux-kernel - Re: [PATCH v2 3/5] soc: visconti: Add Toshiba Visconti DNN image processing accelerator

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Date:   Mon, 25 Jul 2022 14:48:15 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Yuji Ishikawa <yuji2.ishikawa@...hiba.co.jp>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Hans Verkuil <hverkuil@...all.nl>,
        Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@...hiba.co.jp>,
        Jonathan Corbet <corbet@....net>,
        Sumit Semwal <sumit.semwal@...aro.org>,
        Christian König <christian.koenig@....com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-media@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        linaro-mm-sig@...ts.linaro.org
Subject: Re: [PATCH v2 3/5] soc: visconti: Add Toshiba Visconti DNN image
 processing accelerator

On Fri, Jul 22, 2022 at 05:28:56PM +0900, Yuji Ishikawa wrote:
> Add support to DNN image processing accelerator on Toshiba Visconti ARM SoCs.
> The accelerator is applicable to DNN inference tasks.
> 
> Signed-off-by: Yuji Ishikawa <yuji2.ishikawa@...hiba.co.jp>
> Reviewed-by: Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@...hiba.co.jp>
> ---
> v1 -> v2:
>   - applied checkpatch.pl --strict
>   - removed unused code
> ---
>  drivers/soc/visconti/Kconfig           |   6 +
>  drivers/soc/visconti/Makefile          |   2 +
>  drivers/soc/visconti/dnn/Makefile      |   6 +
>  drivers/soc/visconti/dnn/dnn.c         | 523 +++++++++++++++++++++++++
>  drivers/soc/visconti/dnn/hwd_dnn.c     | 183 +++++++++
>  drivers/soc/visconti/dnn/hwd_dnn.h     |  68 ++++
>  drivers/soc/visconti/dnn/hwd_dnn_reg.h | 228 +++++++++++
>  drivers/soc/visconti/uapi/dnn.h        |  77 ++++
>  8 files changed, 1093 insertions(+)
>  create mode 100644 drivers/soc/visconti/dnn/Makefile
>  create mode 100644 drivers/soc/visconti/dnn/dnn.c
>  create mode 100644 drivers/soc/visconti/dnn/hwd_dnn.c
>  create mode 100644 drivers/soc/visconti/dnn/hwd_dnn.h
>  create mode 100644 drivers/soc/visconti/dnn/hwd_dnn_reg.h
>  create mode 100644 drivers/soc/visconti/uapi/dnn.h
> 
> diff --git a/drivers/soc/visconti/Kconfig b/drivers/soc/visconti/Kconfig
> index 8b1378917..a25287d0c 100644
> --- a/drivers/soc/visconti/Kconfig
> +++ b/drivers/soc/visconti/Kconfig
> @@ -1 +1,7 @@
> +if ARCH_VISCONTI
> +
> +config VISCONTI_DNN
> +    bool "Visconti DNN driver"
> +

We can't take Kconfig options with no help text at all, please provide
the needed information here.

And why can't this be a module?