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Subject[PATCH 3.10 04/18] ARM: mvebu: fix NOR bus-width in Armada XP OpenBlocks AX3 Device Tree
3.10-stable review patch.  If anyone has any objections, please let me know.


From: Thomas Petazzoni <>

commit 6e20bae8a39c40d4e03698e4160bad2d2629062b 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 OpenBlocks AX3 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
a7d4f81821f7eec3175f8e23dd6949c71ab2da43 ('ARM: mvebu: Add support for
NOR flash device on Openblocks AX3 board') which was merged in v3.10.

Signed-off-by: Thomas Petazzoni <>
Fixes: a7d4f81821f7 ('ARM: mvebu: Add support for NOR flash device on Openblocks AX3 board')
Cc: # v3.10+
Acked-by: Ezequiel Garcia <>
Acked-by: Gregory CLEMENT <>
Signed-off-by: Jason Cooper <>
Signed-off-by: Greg Kroah-Hartman <>

arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts
+++ b/arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts
@@ -152,7 +152,7 @@
/* 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>;

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