linux-kernel - Re: [PATCH 2/4] dt-bindings: media: Add bindings for raspberrypi,rp1-cfe

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Message-ID: <CAEmqJPp7uGYe993L+ujth2mfRy66s8-S9FNxPY7vwkrboDq9yg@mail.gmail.com>
Date: Tue, 19 Mar 2024 12:06:54 +0000
From: Naushir Patuck <naush@...pberrypi.com>
To: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc: Tomi Valkeinen <tomi.valkeinen@...asonboard.com>, linux-media@...r.kernel.org, 
	linux-kernel@...r.kernel.org, devicetree@...r.kernel.org, 
	linux-rpi-kernel@...ts.infradead.org, linux-arm-kernel@...ts.infradead.org, 
	Laurent Pinchart <laurent.pinchart@...asonboard.com>, 
	Sakari Ailus <sakari.ailus@...ux.intel.com>, Jacopo Mondi <jacopo.mondi@...asonboard.com>, 
	Kieran Bingham <kieran.bingham@...asonboard.com>, 
	Mauro Carvalho Chehab <mchehab@...nel.org>, 
	Raspberry Pi Kernel Maintenance <kernel-list@...pberrypi.com>, Rob Herring <robh+dt@...nel.org>, 
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, Conor Dooley <conor+dt@...nel.org>, 
	Florian Fainelli <florian.fainelli@...adcom.com>, 
	Broadcom internal kernel review list <bcm-kernel-feedback-list@...adcom.com>
Subject: Re: [PATCH 2/4] dt-bindings: media: Add bindings for raspberrypi,rp1-cfe

Hi,

On Tue, 19 Mar 2024 at 09:32, Krzysztof Kozlowski
<krzysztof.kozlowski@...aro.org> wrote:
>
> On 19/03/2024 08:00, Tomi Valkeinen wrote:
> > On 19/03/2024 08:48, Tomi Valkeinen wrote:
> >> On 19/03/2024 08:23, Krzysztof Kozlowski wrote:
> >>> On 18/03/2024 16:49, Tomi Valkeinen wrote:
> >>>> Add DT bindings for raspberrypi,rp1-cfe.
> >>>>
> >>>> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@...asonboard.com>
> >>>> ---
> >>>>   .../bindings/media/raspberrypi,rp1-cfe.yaml        | 103
> >>>> +++++++++++++++++++++
> >>>>   1 file changed, 103 insertions(+)
> >>>>
> >>>> diff --git
> >>>> a/Documentation/devicetree/bindings/media/raspberrypi,rp1-cfe.yaml
> >>>> b/Documentation/devicetree/bindings/media/raspberrypi,rp1-cfe.yaml
> >>>> new file mode 100644
> >>>> index 000000000000..7b2beeaaab0e
> >>>> --- /dev/null
> >>>> +++ b/Documentation/devicetree/bindings/media/raspberrypi,rp1-cfe.yaml
> >>>> @@ -0,0 +1,103 @@
> >>>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> >>>> +%YAML 1.2
> >>>> +---
> >>>> +$id: http://devicetree.org/schemas/media/raspberrypi,rp1-cfe.yaml#
> >>>
> >>> Use compatible as filename.
> >>
> >> Ah, indeed. I changed the compatible quite late, adding the "rpi5" as
> >> versioning, and missed changing the file name.
> >>
> >> I'll rename.
> >
> > Actually, maybe it's better to have two compatibles,
> > "raspberrypi,rp1-cfe" as the generic one, and "raspberrypi,rpi5-rp1-cfe"
> > (or something similar) for RaspberryPi 5.
> >
> > And I'm not sure if the "rp1" part is relevant there, would
> > "raspberrypi,cfe" be just as fine? Naush?
>
> See writing bindings. Compatibles should be SoC specific. In some cases
> generic fallbacks make sense, in some note. But don't just choose
> "generic fallback" because you want. Provide rationale.

If the compatible is SoC specific, I suppose "raspberrypi,rp1-cfe"
would be the correct string.

Naush

>
> Best regards,
> Krzysztof
>