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    Subject[PATCH AUTOSEL 5.2 082/185] ARM: dts: imx7-colibri: disable HS400
    Date
    From: Stefan Agner <stefan.agner@toradex.com>

    [ Upstream commit a95fbda08ee20cd063ce5826e0df95a2c22ea8c5 ]

    Force HS200 by masking bit 63 of the SDHCI capability register.
    The i.MX ESDHC driver uses SDHCI_QUIRK2_CAPS_BIT63_FOR_HS400. With
    that the stack checks bit 63 to descide whether HS400 is available.
    Using sdhci-caps-mask allows to mask bit 63. The stack then selects
    HS200 as operating mode.

    This prevents rare communication errors with minimal effect on
    performance:
    sdhci-esdhc-imx 30b60000.usdhc: warning! HS400 strobe DLL
    status REF not lock!

    Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
    Signed-off-by: Philippe Schenker <philippe.schenker@toradex.com>
    Reviewed-by: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>
    Signed-off-by: Shawn Guo <shawnguo@kernel.org>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    arch/arm/boot/dts/imx7-colibri.dtsi | 1 +
    1 file changed, 1 insertion(+)

    diff --git a/arch/arm/boot/dts/imx7-colibri.dtsi b/arch/arm/boot/dts/imx7-colibri.dtsi
    index 895fbde4d4333..c1ed83131b495 100644
    --- a/arch/arm/boot/dts/imx7-colibri.dtsi
    +++ b/arch/arm/boot/dts/imx7-colibri.dtsi
    @@ -323,6 +323,7 @@
    vmmc-supply = <&reg_module_3v3>;
    vqmmc-supply = <&reg_DCDC3>;
    non-removable;
    + sdhci-caps-mask = <0x80000000 0x0>;
    };

    &iomuxc {
    --
    2.20.1
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