From: Rodolfo Giometti <giometti@linux.it>
Date: Mon, 13 Jan 2014 14:35:38 +0000 (+0100)
Subject: mtd: nand: pxa3xx: Add support for 2048 bytes page size devices
X-Git-Tag: v3.14-rc1~65^2~12
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3db227b64841383b0e3c00d02e7c84d363494281;p=pandora-kernel.git

mtd: nand: pxa3xx: Add support for 2048 bytes page size devices

This commit adds support for devices with 2048B page sizes and
4-bit ECC strength requirements. This is achieved by enabling the BCH
ECC engine, which provides a higher strength: 16-bit over 2048 bytes.

Additionally, add a proper ECC layout to model the controller's view
of the device (where 'U' means unused and 'B' is the bad block marker):

 ----------------------------------------------------
 | 2048B data | B | B | 30B spare | 30B ECC | U | U |
 ----------------------------------------------------

Signed-off-by: Rodolfo Giometti <giometti@linux.it>
[Brian: updated with Ezequiel's patch description]
Acked-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
---

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