linux-kernel - Re: [PATCH v4 2/3] dt-bindings: i2c-ast2600: Add support for AST2600 i2C driver

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Date:   Thu, 16 Feb 2023 10:22:02 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Ryan Chen <ryan_chen@...eedtech.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Joel Stanley <joel@....id.au>,
        Andrew Jeffery <andrew@...id.au>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        "openbmc@...ts.ozlabs.org" <openbmc@...ts.ozlabs.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-aspeed@...ts.ozlabs.org" <linux-aspeed@...ts.ozlabs.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v4 2/3] dt-bindings: i2c-ast2600: Add support for AST2600
 i2C driver

On 16/02/2023 10:20, Ryan Chen wrote:
> Hello Krzysztof
> 
>> -----Original Message-----
>> From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
>> Sent: Thursday, February 16, 2023 4:18 AM
>> To: Ryan Chen <ryan_chen@...eedtech.com>; Rob Herring
>> <robh+dt@...nel.org>; Krzysztof Kozlowski
>> <krzysztof.kozlowski+dt@...aro.org>; Joel Stanley <joel@....id.au>; Andrew
>> Jeffery <andrew@...id.au>; Philipp Zabel <p.zabel@...gutronix.de>;
>> openbmc@...ts.ozlabs.org; linux-arm-kernel@...ts.infradead.org;
>> linux-aspeed@...ts.ozlabs.org; linux-kernel@...r.kernel.org
>> Subject: Re: [PATCH v4 2/3] dt-bindings: i2c-ast2600: Add support for AST2600
>> i2C driver
>>
>> On 15/02/2023 06:43, Ryan Chen wrote:
>>>>> +  - $ref: /schemas/i2c/i2c-controller.yaml#
>>>>> +
>>>>> +properties:
>>>>> +  compatible:
>>>>> +    enum:
>>>>> +      - aspeed,ast2600-i2c
>>>>
>>>> NAK. It's already there. Please do not waste our time in submitting
>>>> duplicated drivers.
>>>
>>> It is not duplicated, as my description in cover " This series add AST2600 i2c
>> new register set driver"
>>> So, this will be different driver compatible.
>>> The original compatible is
>>>       - aspeed,ast2400-i2c-bus
>>>       - aspeed,ast2500-i2c-bus
>>>       - aspeed,ast2600-i2c-bus
>>> So the new register set compatible is "- aspeed,ast2600-i2c", remove "bus".
>>
>> Bindings are documenting hardware, so I claim - we already have this
>> hardware described and this is duplicated. Otherwise - what are these two I2C
>> controllers and what are the differences? Why they do not have really different
>> name? Bus looks more like a mistake than a differentiating name.
> For misunderstanding, or mistaken. 
> I purpose to be aspeed,ast2600-i2cv2, will it more clear way ? 

I don't know. I still did not get answers. I asked here several questions.

Best regards,
Krzysztof