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