[U-Boot] [PATCH] mtd: nand: Arasan: Add subpage configuration support
Michal Simek
michal.simek at xilinx.com
Wed Nov 21 14:48:21 UTC 2018
From: Martin Lund <malu at 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 at gomspace.com>
Acked-by: Siva Durga Prasad Paladugu <siva.durga.paladugu at xilinx.com>
Signed-off-by: Michal Simek <michal.simek at 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;
--
1.9.1
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