ARM: mvebu: fix NOR bus-width in Armada XP DB Device Tree

commit f3aec8f3f05025e7b450102dae0759375346706e upstream.

The mvebu-devbus driver had a serious bug, which lead to a 8 bits bus
width declared in the Device Tree being considered as a 16 bits bus
width when configuring the hardware.

This bug in mvebu-devbus driver was compensated by a symetric mistake
in the Armada XP DB Device Tree: a 8 bits bus width was declared, even
though the hardware actually has a 16 bits bus width connection with
the NOR flash.

Now that we have fixed the mvebu-devbus driver to behave according to
its Device Tree binding, this commit fixes the problematic Device Tree
files as well.

This bug was introduced in commit
b484ff42df475c5087d614c4d477273e1906bcb9 ('ARM: mvebu: Add support for
NOR flash device on Armada XP-DB board') which was merged in v3.11.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Link: https://lkml.kernel.org/r/1397489361-5833-4-git-send-email-thomas.petazzoni@free-electrons.com
Fixes: b484ff42df47 ('ARM: mvebu: Add support for NOR flash device on Armada XP-DB board')
Acked-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/arch/arm/boot/dts/armada-xp-db.dts b/arch/arm/boot/dts/armada-xp-db.dts
index bcf6d79a57ec55febf5f037affdee94e901f3628..8c2fe44e4dfec87e87e09531de2849f29a3b9fdf 100644 (file)
--- a/arch/arm/boot/dts/armada-xp-db.dts
+++ b/arch/arm/boot/dts/armada-xp-db.dts
@@ -40,7 +40,7 @@
                        /* Device Bus parameters are required */
 
                        /* Read parameters */
-                       devbus,bus-width    = <8>;
+                       devbus,bus-width    = <16>;
                        devbus,turn-off-ps  = <60000>;
                        devbus,badr-skew-ps = <0>;
                        devbus,acc-first-ps = <124000>;