Subpage write support for freescale eLBC NAND controller driver is implemented in U-Boot and was fixes in the commit d3963721d93f ("nand: Sync with Linux v4.1").
So remove NAND_NO_SUBPAGE_WRITE flag from the fsl_elbc_nand.c driver. This partially revert commit cb04c7723429 ("nand/fsl: add NAND_NO_SUBPAGE_WRITE to eLBC and IFC drivers"), only eLBC driver part.
With this change U-Boot with default settings can read from NAND UBIFS image created on Linux with Linux default settings. Prior this change U-Boot was unable to read from NAND UBIFS images created with Linux default settings due to differnet UBI geometry.
Linux kernel fsl_elbc_nand.c driver also does not set NAND_NO_SUBPAGE_WRITE flag and has implemented subpage write support.
Fixes: cb04c7723429 ("nand/fsl: add NAND_NO_SUBPAGE_WRITE to eLBC and IFC drivers") Fixes: d3963721d93f ("nand: Sync with Linux v4.1") Signed-off-by: Pali Rohár pali@kernel.org --- See also email thread: https://lore.kernel.org/u-boot/20220807120027.2zz43afbqtqljhul@pali/t/#u --- drivers/mtd/nand/raw/fsl_elbc_nand.c | 1 - 1 file changed, 1 deletion(-)
diff --git a/drivers/mtd/nand/raw/fsl_elbc_nand.c b/drivers/mtd/nand/raw/fsl_elbc_nand.c index 48a3687f2728..e28670a4724a 100644 --- a/drivers/mtd/nand/raw/fsl_elbc_nand.c +++ b/drivers/mtd/nand/raw/fsl_elbc_nand.c @@ -732,7 +732,6 @@ static int fsl_elbc_chip_init(int devnum, u8 *addr, struct udevice *dev) nand->bbt_md = &bbt_mirror_descr;
/* set up nand options */ - nand->options = NAND_NO_SUBPAGE_WRITE; nand->bbt_options = NAND_BBT_USE_FLASH;
nand->controller = &elbc_ctrl->controller;