linux-kernel - RE: [PATCH v4 1/6] dt-bindings: media: platform: visconti: Add Toshiba Visconti Video Input Interface bindings

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Message-ID: <TYAPR01MB62014698C65E5ADFBD07C65F92FD9@TYAPR01MB6201.jpnprd01.prod.outlook.com>
Date:   Thu, 12 Jan 2023 02:05:38 +0000
From:   <yuji2.ishikawa@...hiba.co.jp>
To:     <krzk@...nel.org>, <hverkuil@...all.nl>,
        <laurent.pinchart@...asonboard.com>, <mchehab@...nel.org>,
        <nobuhiro1.iwamatsu@...hiba.co.jp>
CC:     <linux-media@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>
Subject: RE: [PATCH v4 1/6] dt-bindings: media: platform: visconti: Add
 Toshiba Visconti Video Input Interface bindings



> -----Original Message-----
> From: Krzysztof Kozlowski <krzk@...nel.org>
> Sent: Wednesday, January 11, 2023 10:29 PM
> To: ishikawa yuji(石川 悠司 ○ＲＤＣ□ＡＩＴＣ○ＥＡ開)
> <yuji2.ishikawa@...hiba.co.jp>; hverkuil@...all.nl;
> laurent.pinchart@...asonboard.com; mchehab@...nel.org; iwamatsu
> nobuhiro(岩松 信洋 □ＳＷＣ◯ＡＣＴ) <nobuhiro1.iwamatsu@...hiba.co.jp>
> Cc: linux-media@...r.kernel.org; linux-arm-kernel@...ts.infradead.org;
> linux-kernel@...r.kernel.org; devicetree@...r.kernel.org
> Subject: Re: [PATCH v4 1/6] dt-bindings: media: platform: visconti: Add Toshiba
> Visconti Video Input Interface bindings
> 
> On 11/01/2023 14:21, yuji2.ishikawa@...hiba.co.jp wrote:
> > Hello Krzysztof,
> >
> > Sorry, I missed your comments following the topic of recipients list.
> >
> > Below are the rest of the responses
> >
> >> -----Original Message-----
> >> From: Krzysztof Kozlowski <krzk@...nel.org>
> >> Sent: Wednesday, January 11, 2023 4:31 AM
> >> To: ishikawa yuji(石川 悠司 ○ＲＤＣ□ＡＩＴＣ○ＥＡ開)
> >> <yuji2.ishikawa@...hiba.co.jp>; Hans Verkuil <hverkuil@...all.nl>;
> >> Laurent Pinchart <laurent.pinchart@...asonboard.com>; Mauro Carvalho
> >> Chehab <mchehab@...nel.org>; iwamatsu nobuhiro(岩松 信洋 □ＳＷＣ◯
> ＡＣＴ)
> >> <nobuhiro1.iwamatsu@...hiba.co.jp>
> >> Cc: linux-media@...r.kernel.org;
> >> linux-arm-kernel@...ts.infradead.org;
> >> linux-kernel@...r.kernel.org; devicetree@...r.kernel.org
> >> Subject: Re: [PATCH v4 1/6] dt-bindings: media: platform: visconti:
> >> Add Toshiba Visconti Video Input Interface bindings
> >>
> >> On 10/01/2023 02:41, Yuji Ishikawa wrote:
> >>> Adds the Device Tree binding documentation that allows to describe
> >>> the Video Input Interface found in Toshiba Visconti SoCs.
> >>>
> >>> Signed-off-by: Yuji Ishikawa <yuji2.ishikawa@...hiba.co.jp>
> >>> Reviewed-by: Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@...hiba.co.jp>
> >>
> >> Please use scripts/get_maintainers.pl to get a list of necessary
> >> people and lists to CC.  It might happen, that command when run on an
> >> older kernel, gives you outdated entries.  Therefore please be sure
> >> you base your patches on recent Linux kernel.
> >>
> >> You missed few of them, so clearly this was not sent correctly.
> >>
> >>
> >> Subject: drop second/last, redundant "bindings". The "dt-bindings"
> >> prefix is already stating that these are bindings.
> 
> Follow all comments.
> 

I'll remove the trailing word "bindings".

> >>
> >>> ---
> >>> Changelog v2:
> >>> - no change
> >>>
> >>> Changelog v3:
> >>> - no change
> >>>
> >>> Changelog v4:
> >>> - fix style problems at the v3 patch
> >>> - remove "index" member
> >>> - update example
> >>> ---
> >>>  .../bindings/media/toshiba,visconti-viif.yaml | 98
> >>> +++++++++++++++++++
> >>>  1 file changed, 98 insertions(+)
> >>>  create mode 100644
> >>> Documentation/devicetree/bindings/media/toshiba,visconti-viif.yaml
> >>>
> >>> diff --git
> >>> a/Documentation/devicetree/bindings/media/toshiba,visconti-viif.yaml
> >>> b/Documentation/devicetree/bindings/media/toshiba,visconti-viif.yaml
> >>> new file mode 100644
> >>> index 00000000000..71442724d1a
> >>> --- /dev/null
> >>> +++ b/Documentation/devicetree/bindings/media/toshiba,visconti-viif.
> >>> +++ ya
> >>> +++ ml
> >>> @@ -0,0 +1,98 @@
> >>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) %YAML 1.2
> >>> +---
> >>> +$id:
> >>> +http://devicetree.org/schemas/media/toshiba,visconti-viif.yaml#
> >>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> >>> +
> >>> +title: Toshiba Visconti5 SoC Video Input Interface Device Tree
> >>> +Bindings
> >>
> >> Drop "Device Tree Bindings"
> >
> > I'll drop it.
> >
> >>
> >>> +
> >>> +maintainers:
> >>> +  - Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@...hiba.co.jp>
> >>> +
> >>> +description:
> >>> +  Toshiba Visconti5 SoC Video Input Interface (VIIF)
> >>> +  receives MIPI CSI2 video stream,
> >>> +  processes the stream with embedded image signal processor (L1ISP,
> >>> +L2ISP),
> >>> +  then stores pictures to main memory.
> >>
> >> Fix wrapping.
> >
> > I'll fix this.
> > I didn't realize a new line has been added through formatting a patch.
> >
> >>> +
> >>> +properties:
> >>> +  compatible:
> >>> +    const: toshiba,visconti-viif
> >>
> >> Compatible must be specific. You called your SoC visconti5, didn't you?
> >>
> >
> > The Video Input Interface hardware is likely to be used at future SoCs
> > of Visconti Architecture.
> > Does compatible have to be specific to SoC's model name rather than
> > architecture name?
> 
> Compatibles should always be specific to SoC model name. Adding more generic
> family fallback is also good idea when it is applicable.
> 

I'll update the compatible to "toshiba,visconti5-viif".
I'll consider adding generic version "toshiba,visconti-viif" when a successor SoC gets available.

> Best regards,
> Krzysztof

Regards,
Yuji