From 225b94cdf719d0bc522a354bdafc18e5da5ff83b Mon Sep 17 00:00:00 2001 From: Arnaud Ebalard Date: Sat, 6 Sep 2014 22:49:25 +0200 Subject: [PATCH] ARM: mvebu: Netgear RN104: Use Hardware BCH ECC 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") Cc: # v3.14+ Signed-off-by: Arnaud Ebalard Link: https://lkml.kernel.org/r/920c7e7169dc6aaaa3eb4bced2336d38e77b8864.1410035142.git.arno@natisbad.org Signed-off-by: Jason Cooper --- arch/arm/boot/dts/armada-370-netgear-rn104.dts | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/arm/boot/dts/armada-370-netgear-rn104.dts b/arch/arm/boot/dts/armada-370-netgear-rn104.dts index c5fe8b5dcdc7..4ec1ce561d34 100644 --- 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 */ -- 2.20.1