linux-kernel - Re: [PATCH 2/2] media: dt-bindings: Use additionalProperties: false for endpoint: properties:

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Message-ID: <2afe4f3c-e2ce-4cc0-88ac-348e6f3f7e26@linaro.org>
Date: Mon, 14 Oct 2024 10:03:43 +0100
From: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
To: Krzysztof Kozlowski <krzk@...nel.org>
Cc: Mauro Carvalho Chehab <mchehab@...nel.org>, Rob Herring
 <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
 Conor Dooley <conor+dt@...nel.org>,
 Dave Stevenson <dave.stevenson@...pberrypi.com>,
 Sakari Ailus <sakari.ailus@...ux.intel.com>, Shawn Guo
 <shawnguo@...nel.org>, Sascha Hauer <s.hauer@...gutronix.de>,
 Pengutronix Kernel Team <kernel@...gutronix.de>,
 Fabio Estevam <festevam@...il.com>, Martin Kepplinger <martink@...teo.de>,
 Paul Kocialkowski <paul.kocialkowski@...tlin.com>,
 "Paul J. Murphy" <paul.j.murphy@...el.com>,
 Daniele Alessandrelli <daniele.alessandrelli@...el.com>,
 Tommaso Merciai <tomm.merciai@...il.com>,
 Martin Hecht <martin.hecht@...et.eu>, Zhi Mao <zhi.mao@...iatek.com>,
 Alain Volmat <alain.volmat@...s.st.com>,
 Mikhail Rudenko <mike.rudenko@...il.com>,
 Ricardo Ribalda <ribalda@...nel.org>,
 Kieran Bingham <kieran.bingham@...asonboard.com>,
 Umang Jain <umang.jain@...asonboard.com>,
 Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
 Vladimir Zapolskiy <vladimir.zapolskiy@...aro.org>,
 Dongchun Zhu <dongchun.zhu@...iatek.com>,
 Quentin Schulz <quentin.schulz@...obroma-systems.com>,
 Todor Tomov <todor.too@...il.com>,
 Laurent Pinchart <laurent.pinchart@...asonboard.com>,
 linux-media@...r.kernel.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org, imx@...ts.linux.dev,
 linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 2/2] media: dt-bindings: Use additionalProperties: false
 for endpoint: properties:

On 14/10/2024 09:47, Krzysztof Kozlowski wrote:
> If a common binding for a group of devices encourages you to list its
> subset, then it is not that common.
> 
> Solution is to fix that, e.g. split it per classes of devices.

It might be possible to have

          $ref: /schemas/media/video-interfaces-endpoint-defaults.yaml#

which declares the typical list ->

$ref: /schemas/media/video-interfaces.yaml#
additonalProperties:false

properties:
     data-lanes: true
     link-frequencies: true
     remote-endpoints: true

required:
     data-lanes
     link-frequencies
     remote-endpoints

and then if you need say clock-noncontinuous you'd just include

$ref: /schemas/media/video-interfaces.yaml#
unevaluatedProperties: false

and then list whatever you need

> Or don't care and use unevaluatedProps because it makes people's life
> easier and is still correct. If it is not correct, then this should be
> used as an argument.

I'll wait to see what people think before progressing this patch further.

---
bod