Re: [PATCH v4 02/21] ARM: dts: imx7-colibri: disable HS400

Shawn Guo
2019-08-19T11:07:00Z

On Mon, Aug 12, 2019 at 02:21:17PM +0000, Philippe Schenker 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>

Applied, thanks.