RE: [PATCH v2 3/5] soc: visconti: Add Toshiba Visconti DNN image processing accelerator

[<yuji2.ishikawa@xxxxxxxxxxxxx>]

Hi Greg

Thanks for your comments

> -----Original Message-----
> From: Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx>
> Sent: Monday, July 25, 2022 9:48 PM
> To: ishikawa yuji(石川 悠司 ○ＲＤＣ□ＡＩＴＣ○ＥＡ開)
> <yuji2.ishikawa@xxxxxxxxxxxxx>Hi
> Cc: Rob Herring <robh+dt@xxxxxxxxxx>; Hans Verkuil <hverkuil@xxxxxxxxx>;
> iwamatsu nobuhiro(岩松 信洋 □ＳＷＣ◯ＡＣＴ)
> <nobuhiro1.iwamatsu@xxxxxxxxxxxxx>; Jonathan Corbet <corbet@xxxxxxx>;
> Sumit Semwal <sumit.semwal@xxxxxxxxxx>; Christian König
> <christian.koenig@xxxxxxx>; linux-arm-kernel@xxxxxxxxxxxxxxxxxxx;
> linux-kernel@xxxxxxxxxxxxxxx; linux-media@xxxxxxxxxxxxxxx;
> dri-devel@xxxxxxxxxxxxxxxxxxxxx; linaro-mm-sig@xxxxxxxxxxxxxxxx
> 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@xxxxxxxxxxxxx>
> > Reviewed-by: Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@xxxxxxxxxxxxx>
> > ---
> > 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.

I'll add detailed description to Kconfig help text.

> 
> And why can't this be a module?

There're no special reasons to disable module build.
I'll test module build and add the option.

Regards,
  Yuji