linux-kernel - Re: [PATCH 01/10] dt: bindings: clock: add mtmips SoCs clock device tree binding documentation

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Message-ID: <1c279b0a-c814-2fe3-0432-2aa6b3dff16e@arinc9.com>
Date:   Tue, 21 Mar 2023 11:53:18 +0300
From:   Arınç ÜNAL <arinc.unal@...nc9.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Sergio Paracuellos <sergio.paracuellos@...il.com>
Cc:     linux-clk@...r.kernel.org, linux-mips@...r.kernel.org,
        tsbogend@...ha.franken.de, john@...ozen.org,
        linux-kernel@...r.kernel.org, p.zabel@...gutronix.de,
        mturquette@...libre.com, sboyd@...nel.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, matthias.bgg@...il.com,
        devicetree@...r.kernel.org
Subject: Re: [PATCH 01/10] dt: bindings: clock: add mtmips SoCs clock device
 tree binding documentation

On 21.03.2023 11:39, Krzysztof Kozlowski wrote:
> On 21/03/2023 09:33, Arınç ÜNAL wrote:
>> On 21.03.2023 11:27, Krzysztof Kozlowski wrote:
>>> On 21/03/2023 09:24, Arınç ÜNAL wrote:
>>>>>>
>>>>>> If we take the calling new things mediatek route, we will never get to
>>>>>> the bottom of fixing the naming inconsistency.
>>>>>
>>>>> All new things, so new SoCs, should be called mediatek, because there is
>>>>> no ralink and mediatek is already used for them. So why some new
>>>>> Mediatek SoCs are "mediatek" but some other also new SoCs are "ralink"?
>>>>>
>>>>> You can do nothing (and no actual need) about existing inconsistency...
>>>>
>>>> I couldn't change ralink -> mediatek because company acquisitions don't
>>>> grant the change. I don't see any reason to prevent changing mediatek ->
>>>> ralink without breaking the ABI on the existing schemas.
>>>
>>> You cannot change mediatek->ralink without breaking the ABI for the same
>>> reasons.
>>
>> Then this is where I ask for an exception.
>>
>> The current solution only complicates things more.
>>
>> https://github.com/paraka/linux/pull/1/files#diff-0ae6c456898d08536ce987c32f23f2eb6f4a0f7c38bff9a61bdf3d0daa3f6549R21
> 
> Sorry, I don't understand what's under this link and how some Github
> repo pull helps in this discussion. I don't see there any text, which
> could help.

That's Sergio's current branch, before he sends out a new version of the 
patch series. So that's the current solution, having 
mediatek,mt7620-sysc and ralink,mt7620a-sysc on the schema.

> 
> I also do not understand why this pull proves that you can change
> existing mediatek compatibles (we talk also about ARM, which is shipped
> to million of devices) to ralink without breaking the ABI.

No no, I only want to do this on schemas that concern the MTMIPS 
platform. It doesn't concern the MediaTek ARM schemas.

> 
> I do not see how choosing one variant for compatibles having two
> variants of prefixes, complicates things. Following this argument
> choosing "ralink" also complicates!

The idea is to make every compatible string of MTMIPS to have the ralink 
prefix so it's not mediatek on some schemas and ralink on others. Simpler.

Arınç