[MTD] [NAND] Move ancient NAND chip support into a config option

The support for obsolete ancient NAND chips adds .data size and one
of the old ids conflicts with a modern one. Make the support for
such chips depending on a config option.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>

1 files changed, 9 insertions, 0 deletions

diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig
index 2d12dcdd740c..49cbf510cce1 100644
--- a/drivers/mtd/nand/Kconfig
+++ b/drivers/mtd/nand/Kconfig
@@ -31,6 +31,15 @@ config MTD_NAND_ECC_SMC
           Software ECC according to the Smart Media Specification.
           The original Linux implementation had byte 0 and 1 swapped.
 
+config MTD_NAND_MUSEUM_IDS
+        bool "Enable chip ids for obsolete ancient NAND devices"
+        depends on MTD_NAND
+        default n
+        help
+          Enable this option only when your board has first generation
+          NAND chips (page size 256 byte, erase size 4-8KiB). The IDs
+          of these chips were reused by later, larger chips.
+
 config MTD_NAND_AUTCPU12
         tristate "SmartMediaCard on autronix autcpu12 board"
         depends on MTD_NAND && ARCH_AUTCPU12