linux-kernel - Re: [PATCH v2 1/6] dt-bindings: mmc: mmci: Add st,stm32mp25-sdmmc2 compatible

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Message-ID: <598c14f9-395c-d218-4af9-31bba022dcf6@linaro.org>
Date:   Mon, 19 Jun 2023 14:23:25 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Yann Gautier <yann.gautier@...s.st.com>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        linux-mmc@...r.kernel.org, devicetree@...r.kernel.org
Cc:     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 v2 1/6] dt-bindings: mmc: mmci: Add st,stm32mp25-sdmmc2
 compatible

On 19/06/2023 13:51, Yann Gautier 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>
> ---
> Changes in v2:
> - update dt-bindings file (remove bootloader reference and use enum)
> 
>  Documentation/devicetree/bindings/mmc/arm,pl18x.yaml | 7 ++++---
>  1 file changed, 4 insertions(+), 3 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/mmc/arm,pl18x.yaml b/Documentation/devicetree/bindings/mmc/arm,pl18x.yaml
> index 1c96da04f0e53..2459a55ed540b 100644
> --- a/Documentation/devicetree/bindings/mmc/arm,pl18x.yaml
> +++ b/Documentation/devicetree/bindings/mmc/arm,pl18x.yaml
> @@ -53,10 +53,11 @@ properties:
>          items:
>            - const: arm,pl18x
>            - const: arm,primecell
> -      - description: Entry for STMicroelectronics variant of PL18x.
> -          This dedicated compatible is used by bootloaders.
> +      - description: Entries for STMicroelectronics variant of PL18x.
>          items:
> -          - const: st,stm32-sdmmc2
> +          - enum:
> +              - st,stm32-sdmmc2
> +              - st,stm32mp25-sdmmc2

It's nicely visible that old stm32 entry was family-generic, not
device-specific, thus not really correct. :( I hope we can learn from
this for future stm submissions.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>


Best regards,
Krzysztof