linux-kernel - Re: [PATCH v3 6/9] dt-bindings: clock: nxp,imx95-blk-ctl: Add optional ldb property

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Message-ID: <67accd3e-8804-4f38-af6f-3c351ca7807d@kernel.org>
Date: Sun, 17 Aug 2025 09:25:32 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Laurentiu Palcu <laurentiu.palcu@....nxp.com>
Cc: imx@...ts.linux.dev, Abel Vesa <abelvesa@...nel.org>,
 Peng Fan <peng.fan@....com>, Michael Turquette <mturquette@...libre.com>,
 Stephen Boyd <sboyd@...nel.org>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>,
 Sascha Hauer <s.hauer@...gutronix.de>,
 Pengutronix Kernel Team <kernel@...gutronix.de>,
 Fabio Estevam <festevam@...il.com>, Frank Li <frank.li@....com>,
 linux-clk@...r.kernel.org, devicetree@...r.kernel.org,
 linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 6/9] dt-bindings: clock: nxp,imx95-blk-ctl: Add
 optional ldb property

On 07/08/2025 14:35, Laurentiu Palcu wrote:
>>
>> Why every device here has ldb child? Why camera has ldb?
> I guess I see what you mean... Would something like the following change
> be acceptable?
> 
> ---
> if:
>   properties:
>     compatible:
>       contains:
>         const: nxp,imx94-lvds-csr
> then:
>   patternProperties:
>     "^ldb@[0-9a-f]+$":
>       type: object
>       $ref: /schemas/display/bridge/fsl,ldb.yaml#

In if:then: you only narrow the existence or constraints, so "if:not:
.... then: patternProperties:.... ^ldb@[0-9a-f]+$:false". The node
should still be defined in top level.

Best regards,
Krzysztof