linux-kernel - Re: [PATCH 03/18] MIPS: DTS: jz4780: fix tcu timer as reported by dtbscheck

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Message-Id: <A023438A-B8A8-4F91-BA25-7BE9A76C6730@goldelico.com>
Date:   Sat, 9 Apr 2022 15:03:12 +0200
From:   "H. Nikolaus Schaller" <hns@...delico.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Paul Cercueil <paul@...pouillou.net>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        linux-mips@...r.kernel.org, letux-kernel@...nphoenux.org
Subject: Re: [PATCH 03/18] MIPS: DTS: jz4780: fix tcu timer as reported by
 dtbscheck



> Am 09.04.2022 um 13:11 schrieb Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>:
> 
> On 08/04/2022 20:37, H. Nikolaus Schaller wrote:
>> arch/mips/boot/dts/ingenic/ci20.dtb: timer@...02000: compatible: 'oneOf' conditional failed, one must be fixed:
>> 	['ingenic,jz4780-tcu', 'ingenic,jz4770-tcu', 'simple-mfd'] is too long
>> 	'ingenic,jz4780-tcu' is not one of ['ingenic,jz4740-tcu', 'ingenic,jz4725b-tcu', 'ingenic,jz4760-tcu', 'ingenic,x1000-tcu']
>> 	'simple-mfd' was expected
>> 	'ingenic,jz4760-tcu' was expected
> 
> Trim it a bit...
> 
>> 	From schema: Documentation/devicetree/bindings/timer/ingenic,tcu.yaml
> 
> You need to explain this. You're changing the effective compatible of
> the device and doing so based only on schema warning does not look
> enough. Please write real reason instead of this fat warning, e.g. that
> both devices are actually compatible and this has no real effect except
> schema checks.

both use jz4740_soc_info / jz4770_soc_info and there is no ingenic,jz4780-tcu...
So it doesn't change function, just makes it fit to the bindings.

We could solve it differently add ingenic,jz4780-tcu to bindings and the
driver compatible table.