mtd: omap: add support for nand prefetch-read and post-write

This patch adds prefetch support to access nand flash in mpu mode.
This patch also adds 8-bit nand support (omap_read/write_buf8).
Prefetch can be used for both 8- and 16-bit devices.

Signed-off-by: Vimal Singh <vimalsingh@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig
index 707d7ee495df..7dab79caed44 100644
--- a/drivers/mtd/nand/Kconfig
+++ b/drivers/mtd/nand/Kconfig
@@ -80,6 +80,14 @@ config MTD_NAND_OMAP2
         help
           Support for NAND flash on Texas Instruments OMAP2 and OMAP3 platforms.
 
+config MTD_NAND_OMAP_PREFETCH
+        bool "GPMC prefetch support for NAND Flash device"
+        depends on MTD_NAND && MTD_NAND_OMAP2
+        default y
+        help
+         The NAND device can be accessed for Read/Write using GPMC PREFETCH engine
+         to improve the performance.
+
 config MTD_NAND_TS7250
         tristate "NAND Flash device on TS-7250 board"
         depends on MACH_TS72XX