From 7815af409af011e1a5572fde06450cb42130d461 Mon Sep 17 00:00:00 2001
From: Gabor Juhos <juhosg@openwrt.org>
Date: Fri, 27 Sep 2013 11:15:34 +0000
Subject: [PATCH] ar71xx: ar934x-nfc: disable subpage write when hardware ECC
is used
It is not supported by the controller.
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
SVN-Revision: 38234
---
target/linux/ar71xx/files/drivers/mtd/nand/ar934x_nfc.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/target/linux/ar71xx/files/drivers/mtd/nand/ar934x_nfc.c b/target/linux/ar71xx/files/drivers/mtd/nand/ar934x_nfc.c
index 8b6658087f..9231251593 100644
--- a/target/linux/ar71xx/files/drivers/mtd/nand/ar934x_nfc.c
+++ b/target/linux/ar71xx/files/drivers/mtd/nand/ar934x_nfc.c
@@ -1281,6 +1281,12 @@ ar934x_nfc_setup_hwecc(struct ar934x_nfc *nfc)
switch (nfc->mtd.writesize) {
case 2048:
+ /*
+ * Writing a subpage separately is not supported, because
+ * the controller only does ECC on full-page accesses.
+ */
+ nand->options = NAND_NO_SUBPAGE_WRITE;
+
nand->ecc.size = 512;
nand->ecc.bytes = 7;
nand->ecc.strength = 4;
--
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