linux-kernel - Re: [PATCH 1/6] dt-bindings: mmc: mmci: Add st,stm32mp25-sdmmc2 compatible

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Message-ID: <3b6781cb-8f59-e70a-bcf8-9fb48fa47cbf@foss.st.com>
Date:   Thu, 15 Jun 2023 17:16:29 +0200
From:   Yann Gautier <yann.gautier@...s.st.com>
To:     Ulf Hansson <ulf.hansson@...aro.org>
CC:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        <linux-mmc@...r.kernel.org>, <devicetree@...r.kernel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Russell King <linux@...linux.org.uk>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Christophe Kerello <christophe.kerello@...s.st.com>,
        <linux-kernel@...r.kernel.org>, Marek Vasut <marex@...x.de>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Yang Yingliang <yangyingliang@...wei.com>,
        Xiang wangx <wangxiang@...rlc.com>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH 1/6] dt-bindings: mmc: mmci: Add st,stm32mp25-sdmmc2
 compatible

On 6/15/23 15:20, Ulf Hansson wrote:
> On Thu, 15 Jun 2023 at 11:20, Yann Gautier <yann.gautier@...s.st.com> wrote:
>>
>> For STM32MP25, we'll need to distinguish how is managed the delay block.
>> This is done through a new comptible dedicated for this SoC, as the
>> delay block registers are located in SYSCFG peripheral.
>>
>> Signed-off-by: Yann Gautier <yann.gautier@...s.st.com>
>> ---
>>   Documentation/devicetree/bindings/mmc/arm,pl18x.yaml | 6 ++++++
>>   1 file changed, 6 insertions(+)
>>
>> diff --git a/Documentation/devicetree/bindings/mmc/arm,pl18x.yaml b/Documentation/devicetree/bindings/mmc/arm,pl18x.yaml
>> index 1c96da04f0e53..e47b3418b6c77 100644
>> --- a/Documentation/devicetree/bindings/mmc/arm,pl18x.yaml
>> +++ b/Documentation/devicetree/bindings/mmc/arm,pl18x.yaml
>> @@ -59,6 +59,12 @@ properties:
>>             - const: st,stm32-sdmmc2
>>             - const: arm,pl18x
>>             - const: arm,primecell
>> +      - description: Entry for STMicroelectronics variant of PL18x for
>> +          STM32MP25. This dedicated compatible is used by bootloaders.
> 
> What does this last sentence mean? Can we drop it?

Hi Ulf,

I just copied (and added "for STM32MP25") what was done for STM32MP1x:
       - description: Entry for STMicroelectronics variant of PL18x.
           This dedicated compatible is used by bootloaders.
         items:
           - const: st,stm32-sdmmc2
           - const: arm,pl18x
           - const: arm,primecell
       - description: Entry for STMicroelectronics variant of PL18x for
           STM32MP25. This dedicated compatible is used by bootloaders.
         items:
           - const: st,stm32mp25-sdmmc2
           - const: arm,pl18x
           - const: arm,primecell


Should I remove (or adapt) both descriptions?


Best regards,
Yann

> 
>> +        items:
>> +          - const: st,stm32mp25-sdmmc2
>> +          - const: arm,pl18x
>> +          - const: arm,primecell
>>
>>     clocks:
>>       description: One or two clocks, the "apb_pclk" and the "MCLK"
>> --
>> 2.25.1
>>
> 
> Kind regards
> Uffe