Set Features (0xEF) command toggles the R/B# pin after 4 sub feature parameters are written.
Currently, nand_command(_lp) calls chip->dev_ready immediately after the address cycle because NAND_CMD_SET_FEATURES falls into default: label. No wait is needed at this point.
If you see nand_onfi_set_features(), R/B# is already cared by the chip->waitfunc call.
[masahiro: import Linux commit c5d664aa5a4c4b257a54eb35045031630d105f49]
Signed-off-by: Masahiro Yamada yamada.masahiro@socionext.com Signed-off-by: Boris Brezillon boris.brezillon@free-electrons.com ---
drivers/mtd/nand/nand_base.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index 776c20f..a95134c 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -652,6 +652,7 @@ static void nand_command(struct mtd_info *mtd, unsigned int command, case NAND_CMD_SEQIN: case NAND_CMD_STATUS: case NAND_CMD_READID: + case NAND_CMD_SET_FEATURES: return;
case NAND_CMD_RESET: @@ -750,6 +751,7 @@ static void nand_command_lp(struct mtd_info *mtd, unsigned int command, case NAND_CMD_RNDIN: case NAND_CMD_STATUS: case NAND_CMD_READID: + case NAND_CMD_SET_FEATURES: return;
case NAND_CMD_RESET: