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

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Date:   Thu, 15 Jun 2023 15:20:14 +0200
From:   Ulf Hansson <ulf.hansson@...aro.org>
To:     Yann Gautier <yann.gautier@...s.st.com>
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 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?

> +        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