[MTD] [NAND] S3C2410 Large page NAND support

This adds support for using large page NAND devices
with the S3C24XX NAND controller. This also adds the
file Documentation/arm/Samsung-S3C24XX/NAND.txt to
describe the differences.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>

2 files changed, 32 insertions, 0 deletions

diff --git a/Documentation/arm/Samsung-S3C24XX/NAND.txt b/Documentation/arm/Samsung-S3C24XX/NAND.txt
new file mode 100644
index 000000000000..bc478a3409b8
--- /dev/null
+++ b/Documentation/arm/Samsung-S3C24XX/NAND.txt
@@ -0,0 +1,30 @@
+                        S3C24XX NAND Support
+                        ====================
+
+Introduction
+------------
+
+Small Page NAND
+---------------
+
+The driver uses a 512 byte (1 page) ECC code for this setup. The
+ECC code is not directly compatible with the default kernel ECC
+code, so the driver enforces its own OOB layout and ECC parameters
+
+Large Page NAND
+---------------
+
+The driver is capable of handling NAND flash with a 2KiB page
+size, with support for hardware ECC generation and correction.
+
+Unlike the 512byte page mode, the driver generates ECC data for
+each 256 byte block in an 2KiB page. This means that more than
+one error in a page can be rectified. It also means that the
+OOB layout remains the default kernel layout for these flashes.
+
+
+Document Author
+---------------
+
+Ben Dooks, Copyright 2007 Simtec Electronics
+
diff --git a/Documentation/arm/Samsung-S3C24XX/Overview.txt b/Documentation/arm/Samsung-S3C24XX/Overview.txt
index c31b76fa66c4..d04e1e30c47f 100644
--- a/Documentation/arm/Samsung-S3C24XX/Overview.txt
+++ b/Documentation/arm/Samsung-S3C24XX/Overview.txt
@@ -156,6 +156,8 @@ NAND
   controller. If there are any problems the latest linux-mtd
   code can be found from http://www.linux-mtd.infradead.org/
 
+  For more information see Documentation/arm/Samsung-S3C24XX/NAND.txt
+
 
 Serial
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