The patch below does not apply to the 3.10-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@xxxxxxxxxxxxxxx>.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
>From 6e20bae8a39c40d4e03698e4160bad2d2629062b Mon Sep 17 00:00:00 2001
From: Thomas Petazzoni <thomas.petazzoni@xxxxxxxxxxxxxxxxxx>
Date: Mon, 14 Apr 2014 17:29:21 +0200
Subject: [PATCH] ARM: mvebu: fix NOR bus-width in Armada XP OpenBlocks AX3
Device Tree
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 <thomas.petazzoni@xxxxxxxxxxxxxxxxxx>
Link: https://lkml.kernel.org/r/1397489361-5833-5-git-send-email-thomas.petazzoni@xxxxxxxxxxxxxxxxxx
Fixes: a7d4f81821f7 ('ARM: mvebu: Add support for NOR flash device on Openblocks AX3 board')
Cc: stable@xxxxxxxxxxxxxxx # v3.10+
Acked-by: Ezequiel Garcia <ezequiel.garcia@xxxxxxxxxxxxxxxxxx>
Acked-by: Gregory CLEMENT <gregory.clement@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Jason Cooper <jason@xxxxxxxxxxxxxx>
diff --git a/arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts b/arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts
index 985948ce67b3..5d42feb31049 100644
--- a/arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts
+++ b/arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts
@@ -39,7 +39,7 @@
/* 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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