Re: [PATCH v1 08/14] dt-bindings: mtd: relax the nvmem compatible string

From: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
To: Michael Walle <michael@walle.cc>
Cc: "Miquel Raynal" <miquel.raynal@bootlin.com>,
	"Richard Weinberger" <richard@nod.at>,
	"Vignesh Raghavendra" <vigneshr@ti.com>,
	"Rob Herring" <robh+dt@kernel.org>,
	"Krzysztof Kozlowski" <krzysztof.kozlowski+dt@linaro.org>,
	"Srinivas Kandagatla" <srinivas.kandagatla@linaro.org>,
	"Shawn Guo" <shawnguo@kernel.org>, "Li Yang" <leoyang.li@nxp.com>,
	"Rafał Miłecki" <rafal@milecki.pl>,
	"David S . Miller" <davem@davemloft.net>,
	"Eric Dumazet" <edumazet@google.com>,
	"Jakub Kicinski" <kuba@kernel.org>,
	"Paolo Abeni" <pabeni@redhat.com>,
	"Frank Rowand" <frowand.list@gmail.com>,
	linux-mtd@lists.infradead.org, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org, netdev@vger.kernel.org,
	"Ahmad Fatoum" <a.fatoum@pengutronix.de>
Subject: Re: [PATCH v1 08/14] dt-bindings: mtd: relax the nvmem compatible string
Date: Wed, 31 Aug 2022 10:55:00 +0300	[thread overview]
Message-ID: <ffe0e6a8-96ba-e5ed-70c9-f7c6cd9c9ade@linaro.org> (raw)
In-Reply-To: <c8aea3ecb0fcf08c42852f99a4f265b6@walle.cc>

On 31/08/2022 10:48, Michael Walle wrote:
> Am 2022-08-31 09:37, schrieb Krzysztof Kozlowski:
>> On 26/08/2022 00:44, Michael Walle wrote:
>>> The "user-otp" and "factory-otp" compatible string just depicts a
>>> generic NVMEM device. But an actual device tree node might as well
>>> contain a more specific compatible string. Make it possible to add
>>> more specific binding elsewere and just match part of the compatibles
>>
>> typo: elsewhere
>>
>>> here.
>>>
>>> Signed-off-by: Michael Walle <michael@walle.cc>
>>> ---
>>>  Documentation/devicetree/bindings/mtd/mtd.yaml | 7 ++++---
>>>  1 file changed, 4 insertions(+), 3 deletions(-)
>>>
>>> diff --git a/Documentation/devicetree/bindings/mtd/mtd.yaml 
>>> b/Documentation/devicetree/bindings/mtd/mtd.yaml
>>> index 376b679cfc70..0291e439b6a6 100644
>>> --- a/Documentation/devicetree/bindings/mtd/mtd.yaml
>>> +++ b/Documentation/devicetree/bindings/mtd/mtd.yaml
>>> @@ -33,9 +33,10 @@ patternProperties:
>>>
>>>      properties:
>>>        compatible:
>>> -        enum:
>>> -          - user-otp
>>> -          - factory-otp
>>> +        contains:
>>> +          enum:
>>> +            - user-otp
>>> +            - factory-otp
>>
>> This does not work in the "elsewhere" place. You need to use similar
>> approach as we do for syscon or primecell.
> 
> I'm a bit confused. Looking at
>    Documentation/devicetree/bindings/arm/primecell.yaml
> it is done in the same way as this binding.

Yes. primecell is like your mtd here. And how are other places with
primcell (like other places with user-otp) done?

> 
> Whereas, the syscon use a "select:" on top of it. I'm
> pretty sure, I've tested it without the select and the
> validator picked up the constraints.
> 
> Could you elaborate on what is wrong here? Select missing?

You got warning from Rob, so run tests. I think you will see the errors,
just like bot reported them.

Best regards,
Krzysztof

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