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mtd: nand: Arasan: Add subpage configuration support

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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>
This commit is contained in:
Martin Lund 2018-10-30 14:16:19 +01:00 committed by Michal Simek
parent c25e804dd8
commit 1cefca71d2
1 changed files with 4 additions and 0 deletions
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4
drivers/mtd/nand/raw/arasan_nfc.c
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@ -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;