This is a note to let you know that I've just added the patch titled
ARM: mvebu: Netgear RN104: Use Hardware BCH ECC
to the 3.17-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
arm-mvebu-netgear-rn104-use-hardware-bch-ecc.patch
and it can be found in the queue-3.17 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 225b94cdf719d0bc522a354bdafc18e5da5ff83b Mon Sep 17 00:00:00 2001
From: Arnaud Ebalard <arno@xxxxxxxxxxxx>
Date: Sat, 6 Sep 2014 22:49:25 +0200
Subject: ARM: mvebu: Netgear RN104: Use Hardware BCH ECC
From: Arnaud Ebalard <arno@xxxxxxxxxxxx>
commit 225b94cdf719d0bc522a354bdafc18e5da5ff83b upstream.
The bootloader on the Netgear ReadyNAS RN104 uses Hardware BCH
ECC (strength = 4), while the pxa3xx NAND driver by default uses
Hamming ECC (strength = 1).
This patch changes the ECC mode on these machines to match that
of the bootloader and of the stock firmware. That way, it is
now possible to update the kernel from userland (e.g. using
standard tools from mtd-utils package); u-boot will happily
load and boot it.
The issue was initially reported and fixed by Ben Pedell for
RN102. The RN104 shares the same Hynix H27U1G8F2BTR NAND
flash and setup. This patch is based on Ben's fix for RN102.
Fixes: 0373a558bd79 ("ARM: mvebu: Enable NAND controller in ReadyNAS 104 .dts file")
Signed-off-by: Arnaud Ebalard <arno@xxxxxxxxxxxx>
Link: https://lkml.kernel.org/r/920c7e7169dc6aaaa3eb4bced2336d38e77b8864.1410035142.git.arno@xxxxxxxxxxxx
Signed-off-by: Jason Cooper <jason@xxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/arm/boot/dts/armada-370-netgear-rn104.dts | 4 ++++
1 file changed, 4 insertions(+)
--- a/arch/arm/boot/dts/armada-370-netgear-rn104.dts
+++ b/arch/arm/boot/dts/armada-370-netgear-rn104.dts
@@ -145,6 +145,10 @@
marvell,nand-enable-arbiter;
nand-on-flash-bbt;
+ /* Use Hardware BCH ECC */
+ nand-ecc-strength = <4>;
+ nand-ecc-step-size = <512>;
+
partition@0 {
label = "u-boot";
reg = <0x0000000 0x180000>; /* 1.5MB */
Patches currently in stable-queue which might be from arno@xxxxxxxxxxxx are
queue-3.17/arm-mvebu-netgear-rn2120-use-hardware-bch-ecc.patch
queue-3.17/arm-mvebu-netgear-rn102-use-hardware-bch-ecc.patch
queue-3.17/arm-mvebu-netgear-rn104-use-hardware-bch-ecc.patch
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