linux-kernel - Re: [PATCH 16/20] dt-bindings: memory: snps: Detach Zynq DDRC controller support

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Message-ID: <afc181cd-46b7-4c69-d27a-d2005904f48a@linaro.org>
Date:   Tue, 23 Aug 2022 11:30:22 +0300
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Serge Semin <fancer.lancer@...il.com>
Cc:     Serge Semin <Sergey.Semin@...kalelectronics.ru>,
        Rob Herring <robh@...nel.org>,
        Michal Simek <michal.simek@...inx.com>,
        Borislav Petkov <bp@...en8.de>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Tony Luck <tony.luck@...el.com>,
        Rob Herring <robh+dt@...nel.org>,
        Manish Narani <manish.narani@...inx.com>,
        Alexey Malahov <Alexey.Malahov@...kalelectronics.ru>,
        Michail Ivanov <Michail.Ivanov@...kalelectronics.ru>,
        Pavel Parkhomenko <Pavel.Parkhomenko@...kalelectronics.ru>,
        Punnaiah Choudary Kalluri 
        <punnaiah.choudary.kalluri@...inx.com>,
        Dinh Nguyen <dinguyen@...nel.org>,
        James Morse <james.morse@....com>,
        Robert Richter <rric@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-edac@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 16/20] dt-bindings: memory: snps: Detach Zynq DDRC
 controller support

On 23/08/2022 11:27, Serge Semin wrote:
> On Tue, Aug 23, 2022 at 11:22:08AM +0300, Krzysztof Kozlowski wrote:
>> On 23/08/2022 11:17, Krzysztof Kozlowski wrote:
>>> On 22/08/2022 22:07, Serge Semin wrote:
>>>> The Zynq A05 DDRC controller has nothing in common with DW uMCTL2 DDRC:
>>>> the CSRs layout is absolutely different and it doesn't has IRQ unlike DW
>>>> uMCTL2 DDR controller of all versions (v1.x, v2.x and v3.x). Thus there is
>>>> no any reason to have these controllers described by the same bindings.
>>>> Thus let's split them up.
>>>>
>>>> While at it rename the original Synopsys uMCTL2 DT-schema file to a more
>>>> descriptive - snps,dw-umctl2-ddrc.yaml and add a more detailed title and
>>>> description of the device bindings.
>>>
>>> Filename should be based on compatible, so if renaming then
>>> snps,ddrc-3.80a.yaml or snps,ddrc.yaml... which leads to original
>>> filename anyway. Therefore nack for rename.
>>>
>>> BTW, if you perform renames, generate patches with proper -M/-C/-B
>>> arguments so this is detected.
>>>
>>>
>>>>
>>>> Signed-off-by: Serge Semin <Sergey.Semin@...kalelectronics.ru>
>>>> --->  .../snps,dw-umctl2-ddrc.yaml                  | 51 +++++++++++++
>>>
>>> This is a mess. I did not get any cover letters, any other patches any
>>> description of relation between this and your other one.
>>>
>>> It seems you make independent and conflicting changes to the same file,
>>> so this has to be properly organized.
>>>
>>> Send entire patchset with cover letter with description of all
>>> dependencies to all maintainers.
>>>
>>> This is unreviewable now, so a no.
>>
> 
>> And also untestable by Rob's bot, so will have to wait.
> 
> For what reason it's untestable? The patch has no dependencies from
> any other patchset.

This one is testable, but the next one is not, because it depends on
something. I don't see the reason to split the bindings between
different patchsets.

Best regards,
Krzysztof