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authorArnaud Ebalard <arno@natisbad.org>2014-09-06 22:49:38 +0200
committerJason Cooper <jason@lakedaemon.net>2014-09-09 15:50:53 +0000
commit500abb6ccb9e3f8d638a7f422443a8549245ef90 (patch)
treec4378f3301da9839b956118fd6d06cb5507f98c4 /arch/arm/boot/dts/armada-xp-netgear-rn2120.dts
parent225b94cdf719d0bc522a354bdafc18e5da5ff83b (diff)
downloadblackbird-op-linux-500abb6ccb9e3f8d638a7f422443a8549245ef90.tar.gz
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ARM: mvebu: Netgear RN2120: Use Hardware BCH ECC
The bootloader on the Netgear ReadyNAS RN2120 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 RN2120 shares the same Hynix H27U1G8F2BTR NAND flash and setup. This patch is based on Ben's fix for RN102. Fixes: ad51eddd95ad ("ARM: mvebu: Enable NAND controller in ReadyNAS 2120 .dts file") Cc: <stable@vger.kernel.org> # v3.14+ Signed-off-by: Arnaud Ebalard <arno@natisbad.org> Link: https://lkml.kernel.org/r/61f6a1b7ad0adc57a0e201b9680bc2e5f214a317.1410035142.git.arno@natisbad.org Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Diffstat (limited to 'arch/arm/boot/dts/armada-xp-netgear-rn2120.dts')
-rw-r--r--arch/arm/boot/dts/armada-xp-netgear-rn2120.dts4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/armada-xp-netgear-rn2120.dts b/arch/arm/boot/dts/armada-xp-netgear-rn2120.dts
index 0cf999abc4ed..c5ed85a70ed9 100644
--- a/arch/arm/boot/dts/armada-xp-netgear-rn2120.dts
+++ b/arch/arm/boot/dts/armada-xp-netgear-rn2120.dts
@@ -223,6 +223,10 @@
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 */
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