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From 25ebef8c87221774de01d1f1de4fb615fcfc6b54 Mon Sep 17 00:00:00 2001
From: Jason Jin <Jason.jin@freescale.com>
Date: Thu, 4 Aug 2011 09:59:47 +0800
Subject: [PATCH 34/52] Enable the NFC driver for soft_ecc.
If enabled YAFFS2 support, soft ecc should be used for the
nand flash driver.
Signed-off-by: Jason Jin <Jason.jin@freescale.com>
---
drivers/mtd/nand/Kconfig | 6 ++++++
drivers/mtd/nand/fsl_nfc.c | 12 +++++++++---
2 files changed, 15 insertions(+), 3 deletions(-)
--- a/drivers/mtd/nand/Kconfig
+++ b/drivers/mtd/nand/Kconfig
@@ -481,6 +481,12 @@ config MTD_NAND_FSL_NFC
Enables support for NAND Flash chips wired onto Freescale PowerPC
processor localbus with User-Programmable Machine support.
+config MTD_NAND_FSL_NFC_SWECC
+ bool "Software ECC"
+ depends on MTD_NAND_FSL_NFC
+ help
+ Use software ECC.
+
config MTD_NAND_MXC
tristate "MXC NAND support"
depends on ARCH_MX2 || ARCH_MX25 || ARCH_MX3 || ARCH_MX51
--- a/drivers/mtd/nand/fsl_nfc.c
+++ b/drivers/mtd/nand/fsl_nfc.c
@@ -403,9 +403,15 @@ fsl_nfc_command(struct mtd_info *mtd, un
if (page != -1)
prv->page = page;
- nfc_set_field(mtd, NFC_FLASH_CONFIG,
- CONFIG_ECC_MODE_MASK,
- CONFIG_ECC_MODE_SHIFT, ECC_45_BYTE);
+ if(hardware_ecc)
+ nfc_set_field(mtd, NFC_FLASH_CONFIG,
+ CONFIG_ECC_MODE_MASK,
+ CONFIG_ECC_MODE_SHIFT, ECC_45_BYTE);
+ else
+ /* set ECC BY_PASS */
+ nfc_set_field(mtd, NFC_FLASH_CONFIG,
+ CONFIG_ECC_MODE_MASK,
+ CONFIG_ECC_MODE_SHIFT, ECC_BYPASS);
if (!(page%0x40)) {
nfc_set_field(mtd, NFC_FLASH_CONFIG,
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