Messages in this thread Patch in this message | | | From | Philippe Schenker <> | Subject | [PATCH v4 02/21] ARM: dts: imx7-colibri: disable HS400 | Date | Mon, 12 Aug 2019 14:21:17 +0000 |
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From: Stefan Agner <stefan.agner@toradex.com>
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> ---
Changes in v4: None Changes in v3: None Changes in v2: None
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 f1c1971f2160..f7c9ce5bed47 100644 --- a/arch/arm/boot/dts/imx7-colibri.dtsi +++ b/arch/arm/boot/dts/imx7-colibri.dtsi @@ -325,6 +325,7 @@ vmmc-supply = <®_module_3v3>; vqmmc-supply = <®_DCDC3>; non-removable; + sdhci-caps-mask = <0x80000000 0x0>; }; &iomuxc { -- 2.22.0
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