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a95f9f92e2
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@13619 3c298f89-4303-0410-b956-a3cf2f4a3e73
59 lines
1.6 KiB
Diff
Executable File
59 lines
1.6 KiB
Diff
Executable File
From 68108d95040732cebf06296affaaeaaf76029c3d Mon Sep 17 00:00:00 2001
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From: mokopatches <mokopatches@openmoko.org>
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Date: Wed, 16 Jul 2008 14:44:50 +0100
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Subject: [PATCH] s3c24xx-nand-largepage.patch
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MTD: S3C24XX large page NAND support
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This adds support for using large page NAND devices
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with the S3C24XX NAND controller. This also adds the
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file Documentation/arm/Samsung-S3C24XX/NAND.txt to
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describe the differences.
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Signed-off-by: Ben Dooks <ben-linux@fluff.org>
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---
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drivers/mtd/nand/s3c2410.c | 28 ++++++++++++++++++++++++++++
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1 files changed, 28 insertions(+), 0 deletions(-)
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diff --git a/drivers/mtd/nand/s3c2410.c b/drivers/mtd/nand/s3c2410.c
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index cd2e1da..6e7a5b9 100644
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--- a/drivers/mtd/nand/s3c2410.c
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+++ b/drivers/mtd/nand/s3c2410.c
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@@ -726,6 +726,34 @@ static void s3c2410_nand_update_chip(struct s3c2410_nand_info *info,
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}
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}
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+/* s3c2410_nand_update_chip
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+ *
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+ * post-probe chip update, to change any items, such as the
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+ * layout for large page nand
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+ */
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+
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+static void s3c2410_nand_update_chip(struct s3c2410_nand_info *info,
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+ struct s3c2410_nand_mtd *nmtd)
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+{
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+ struct nand_chip *chip = &nmtd->chip;
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+
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+ printk("%s: chip %p: %d\n", __func__, chip, chip->page_shift);
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+
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+ if (hardware_ecc) {
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+ /* change the behaviour depending on wether we are using
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+ * the large or small page nand device */
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+
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+ if (chip->page_shift > 10) {
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+ chip->ecc.size = 256;
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+ chip->ecc.bytes = 3;
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+ } else {
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+ chip->ecc.size = 512;
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+ chip->ecc.bytes = 3;
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+ chip->ecc.layout = &nand_hw_eccoob;
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+ }
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+ }
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+}
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+
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/* s3c2410_nand_probe
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*
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* called by device layer when it finds a device matching
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--
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1.5.6.3
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