[MTD] NAND: Support for 16-bit bus-width on AT91.

Add support for 16-bit NAND bus-width for the AT91 NAND driver.

The 16-bit NAND is found on the Atmel AT91SAM9260-EK and AT91SAM9261-EK
boards.

Orignal Patch from Patrice Vilchez

Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>

diff --git a/drivers/mtd/nand/at91_nand.c b/drivers/mtd/nand/at91_nand.c
index a58ed37..14b80cc 100644 (file)
--- a/drivers/mtd/nand/at91_nand.c
+++ b/drivers/mtd/nand/at91_nand.c
@@ -128,6 +128,9 @@ static int __init at91_nand_probe(struct platform_device *pdev)
        nand_chip->ecc.mode = NAND_ECC_SOFT;    /* enable ECC */
        nand_chip->chip_delay = 20;             /* 20us command delay time */
 
+       if (host->board->bus_width_16)          /* 16-bit bus width */
+               nand_chip->options |= NAND_BUSWIDTH_16;
+
        platform_set_drvdata(pdev, host);
        at91_nand_enable(host);