On Mon, Aug 12, 2019 at 5:23 PM Philippe Schenker <[email protected]> wrote: > > From: Stefan Agner <[email protected]> > > 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 <[email protected]> > Signed-off-by: Philippe Schenker <[email protected]>
Reviewed-by: Oleksandr Suvorov <[email protected]> > --- > > 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 Toradex AG Altsagenstrasse 5 | 6048 Horw/Luzern | Switzerland | T: +41 41 500 4800 (main line)
