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Subject: Re: [PATCH 07/18] MIPS: DTS: jz4780: fix otg node as reported by
 dtbscheck
From:   "H. Nikolaus Schaller" <hns@goldelico.com>
In-Reply-To: <2961d892-609c-c0bf-e9c1-c54306f608c7@linaro.org>
Date:   Sat, 9 Apr 2022 15:37:51 +0200
Cc:     Paul Cercueil <paul@crapouillou.net>,
        Rob Herring <robh+dt@kernel.org>,
        Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
        linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
        linux-mips@vger.kernel.org, letux-kernel@openphoenux.org
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References: <cover.1649443080.git.hns@goldelico.com>
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To:     Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
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> Am 09.04.2022 um 15:23 schrieb Krzysztof Kozlowski =
<krzysztof.kozlowski@linaro.org>:
>=20
> On 09/04/2022 15:18, H. Nikolaus Schaller wrote:
> hould have a specific compatible.
>>>> Please mention why it does not.
>>>=20
>>> Agreed. The "snps,dwc2" should be a fallback string, otherwise there =
is no way to uniquely identify the JZ4780 implementation of the IP.
>>=20
>> Well, there is no specifc implementation and driver for it. So no =
need to uniquely identify it.
>=20
> Specific implementation and driver are not arguments here. This does =
not
> matter. It's really unrelated argument.

The argumentation is in reverse: if there is no need for a specialized =
driver or implementation,
why is there is a need to define a specialization.

Your argument was:
"there is no way to uniquely identify the JZ4780 implementation of the =
IP"

My question is:
"what do we need that for?"

> Bindings are not about implementation in Linux. Implementation can
> change, so bindings should also?

No. Implementations should be agnostic.