Hi Stefan, Marek,
From: Stefan Roese [mailto:sr@denx.de]
From: Marek Belisko marek.belisko@gmail.com
On some NAND devices (e.g. Hynix H27U2G8F2CTR-BI on Siemens DXR2 / Draco boards) the NAND subsystem (SPL & U-Boot drivers) issues the following bit-flip error messages:
nand: bit-flip corrected @oob=0 ...
NAND_CMD_RNDOUT (05h-E0h) needs only two cycles of column address to access data from different column within the same page. So expected sequence on NAND data-bus is <05h> <column-addr-byte1> <column-address-byte2> <E0h>
[...]
diff --git a/drivers/mtd/nand/am335x_spl_bch.c b/drivers/mtd/nand/am335x_spl_bch.c index c84851b..9b547ce 100644 --- a/drivers/mtd/nand/am335x_spl_bch.c +++ b/drivers/mtd/nand/am335x_spl_bch.c @@ -63,15 +63,19 @@ static int nand_command(int block, int page, uint32_t offs, hwctrl(&mtd, offs & 0xff, NAND_CTRL_ALE | NAND_CTRL_CHANGE); /* A[7:0] */ hwctrl(&mtd, (offs >> 8) & 0xff, NAND_CTRL_ALE); /* A[11:9] */
- /* Row address */
- hwctrl(&mtd, (page_addr & 0xff), NAND_CTRL_ALE); /* A[19:12] */
- hwctrl(&mtd, ((page_addr >> 8) & 0xff),
I see the conflict here with following commit. Is this patch on latest u-boot tree?
commit 6dd3b566893a99629771e076dca1ce8db7b77dc1 mtd: Add a CONFIG_SPL_MTD_SUPPORT for a more full NAND subsystem in SPL
May be you need to resend rebased on latest tree..
with regards, pekon