ARM: mvebu: enable no-1-8-v flag for Armada 385 DB SDHCI interface

The Marvell Armada 38x SoC's SDHCI interface is capable of using 1.8v voltage,
needed for driving "UHS-I" SD cards at their full speed. It is not, however,
possible on the DB board. Due to physical connectivity connector supply is tied
to 3v and any attempt of changing voltage in order to operate in the fastest UHS
modes fails.

This patch enables equivalent SDHCI quirk in order to adjust controller
operation to system capabilities.

Signed-off-by: Marcin Wojtas <mw@semihalf.com>
Reviewed-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Acked-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lkml.kernel.org/r/1415980652-7429-3-git-send-email-mw@semihalf.com
Signed-off-by: Jason Cooper <jason@lakedaemon.net>

diff --git a/arch/arm/boot/dts/armada-385-db.dts b/arch/arm/boot/dts/armada-385-db.dts
index 1af886f1e4864adad3f0d210b8dbc146a468fdd7..b1257120455c7ca7c23dc0c7aaa6a51348447cbd 100644 (file)
--- a/arch/arm/boot/dts/armada-385-db.dts
+++ b/arch/arm/boot/dts/armada-385-db.dts
@@ -121,6 +121,7 @@
                                wp-inverted;
                                bus-width = <8>;
                                status = "okay";
+                               no-1-8-v;
                        };
 
                        usb3@f0000 {