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

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Date:   Wed, 31 Aug 2022 09:48:00 +0200
From:   Michael Walle <michael@...le.cc>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc:     Miquel Raynal <miquel.raynal@...tlin.com>,
        Richard Weinberger <richard@....at>,
        Vignesh Raghavendra <vigneshr@...com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Shawn Guo <shawnguo@...nel.org>, Li Yang <leoyang.li@....com>,
        Rafał Miłecki <rafal@...ecki.pl>,
        "David S . Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Frank Rowand <frowand.list@...il.com>,
        linux-mtd@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        netdev@...r.kernel.org, Ahmad Fatoum <a.fatoum@...gutronix.de>
Subject: Re: [PATCH v1 08/14] dt-bindings: mtd: relax the nvmem compatible
 string

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@...le.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.

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?

-michael