From: Martin Lund malu@gomspace.com

Add support for disabling subpage write support via CONFIG_SYS_NAND_NO_SUBPAGE_WRITE.

Currently the Linux Arasan driver does not support subpage writes and in case of running UBI and accessing the same UBI volume from both U-Boot and Linux it is required to have the same subpage write configuration else the location of the UBI headers (EC + VID) will be misaligned (subpage vs page) and incompatible. Hence the need for disabling subpage write support in the U-Boot Arasan NAND driver.

Signed-off-by: Martin Lund malu@gomspace.com Acked-by: Siva Durga Prasad Paladugu siva.durga.paladugu@xilinx.com Signed-off-by: Michal Simek michal.simek@xilinx.com ---

drivers/mtd/nand/raw/arasan_nfc.c | 4 ++++ 1 file changed, 4 insertions(+)

diff --git a/drivers/mtd/nand/raw/arasan_nfc.c b/drivers/mtd/nand/raw/arasan_nfc.c index 41db9f8bb9b1..dc531ccb6822 100644 --- a/drivers/mtd/nand/raw/arasan_nfc.c +++ b/drivers/mtd/nand/raw/arasan_nfc.c @@ -1201,6 +1201,10 @@ static int arasan_nand_init(struct nand_chip *nand_chip, int devnum) mtd = nand_to_mtd(nand_chip); nand_set_controller_data(nand_chip, nand);

+#ifdef CONFIG_SYS_NAND_NO_SUBPAGE_WRITE + nand_chip->options |= NAND_NO_SUBPAGE_WRITE; +#endif + /* Set the driver entry points for MTD */ nand_chip->cmdfunc = arasan_nand_cmd_function; nand_chip->select_chip = arasan_nand_select_chip;