Messages in this thread Patch in this message | | | From | Oleksandr Suvorov <> | Subject | Re: [PATCH v4 02/21] ARM: dts: imx7-colibri: disable HS400 | Date | Thu, 15 Aug 2019 13:52:39 +0000 |
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On Mon, Aug 12, 2019 at 5:23 PM Philippe Schenker <philippe.schenker@toradex.com> wrote: > > 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>
Reviewed-by: Oleksandr Suvorov <oleksandr.suvorov@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 >
-- Best regards Oleksandr Suvorov
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