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mtd: nand: am335x: Fix 'bit-flip' errors in SPL 

OMAP GPMC driver used with some NAND Flash devices
(e.g. Spansion S34ML08G1) causes that U-boot shows
hundreds of 'nand: bit-flip corrected' error messages.
Possible cause was discussed in the mailinglist thread:
http://lists.denx.de/pipermail/u-boot/2014-April/177508.html

The issue was partially fixed with the cc81a5291910d7a.git
however this has to be done to fix the SPL.

The original author of the code is Belisko Marek
<marek.belisko@gmail.com>

Signed-off-by: Rostislav Lisovy <lisovy@merica.cz>
utp
Rostislav Lisovy 2014-09-09 15:54:30 +02:00 committed by Scott Wood
parent e3a4facdfc
commit 2f665945b3
1 changed files with 8 additions and 4 deletions
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12
drivers/mtd/nand/am335x_spl_bch.c
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@ -64,14 +64,18 @@ static int nand_command(int block, int page, uint32_t offs,
NAND_CTRL_ALE | NAND_CTRL_CHANGE); /* A[7:0] */
hwctrl(&nand_info[0], (offs >> 8) & 0xff, NAND_CTRL_ALE); /* A[11:9] */
/* Row address */
hwctrl(&nand_info[0], (page_addr & 0xff), NAND_CTRL_ALE); /* A[19:12] */
hwctrl(&nand_info[0], ((page_addr >> 8) & 0xff),
if (cmd != NAND_CMD_RNDOUT) {
hwctrl(&nand_info[0], (page_addr & 0xff),
NAND_CTRL_ALE); /* A[19:12] */
hwctrl(&nand_info[0], ((page_addr >> 8) & 0xff),
NAND_CTRL_ALE); /* A[27:20] */
#ifdef CONFIG_SYS_NAND_5_ADDR_CYCLE
/* One more address cycle for devices > 128MiB */
hwctrl(&nand_info[0], (page_addr >> 16) & 0x0f,
/* One more address cycle for devices > 128MiB */
hwctrl(&nand_info[0], (page_addr >> 16) & 0x0f,
NAND_CTRL_ALE); /* A[31:28] */
#endif
}
hwctrl(&nand_info[0], NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE);
if (cmd == NAND_CMD_READ0) {