linux-kernel - Re: [PATCH V4 1/3] dt-bindings: mmc: imx-esdhc: Update compatible fallbacks

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Date:   Mon, 11 Apr 2022 08:42:42 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Adam Ford <aford173@...il.com>, linux-mmc@...r.kernel.org
Cc:     aford@...conembedded.com, haibo.chen@....com,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH V4 1/3] dt-bindings: mmc: imx-esdhc: Update compatible
 fallbacks

On 10/04/2022 21:35, Adam Ford wrote:
> The SDHC controller in the imx8mn and imx8mp have the same controller
> as the imx8mm which is slightly different than that of the imx7d.
> 
> Using the fallback of the imx8mm enables the controllers to support
> HS400-ES which is not available on the imx7d. After discussion with NXP,
> it turns out that the imx8qm should fall back to the imx8qxp, because
> those have some additional flags not present in the imx8mm.
> 
> Mark the current state of the fallbacks as deprecated, and add the
> proper fallbacks so in the future, the deprecated combination can be
> removed and prevent any future devices from using the wrong fallback.
> 
> Suggested-by: haibo.chen@....com
> Signed-off-by: Adam Ford <aford173@...il.com>


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


Best regards,
Krzysztof