diff options
| -rw-r--r-- | drivers/mtd/nand/am335x_spl_bch.c | 2 | ||||
| -rw-r--r-- | drivers/mtd/nand/atmel_nand.c | 2 | ||||
| -rw-r--r-- | drivers/mtd/nand/nand_base.c | 6 | ||||
| -rw-r--r-- | drivers/mtd/nand/nand_spl_simple.c | 2 | ||||
| -rw-r--r-- | include/linux/mtd/nand.h | 10 |
5 files changed, 17 insertions, 5 deletions
diff --git a/drivers/mtd/nand/am335x_spl_bch.c b/drivers/mtd/nand/am335x_spl_bch.c index bd89b067d5..ce65d8e12b 100644 --- a/drivers/mtd/nand/am335x_spl_bch.c +++ b/drivers/mtd/nand/am335x_spl_bch.c @@ -55,7 +55,7 @@ static int nand_command(int block, int page, uint32_t offs, } /* Shift the offset from byte addressing to word addressing. */ - if (this->options & NAND_BUSWIDTH_16) + if ((this->options & NAND_BUSWIDTH_16) && !nand_opcode_8bits(cmd)) offs >>= 1; /* Set ALE and clear CLE to start address cycle */ diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c index e1fc48fca4..e73834d2ef 100644 --- a/drivers/mtd/nand/atmel_nand.c +++ b/drivers/mtd/nand/atmel_nand.c @@ -1195,7 +1195,7 @@ static int nand_command(int block, int page, uint32_t offs, u8 cmd) hwctrl(&mtd, cmd, NAND_CTRL_CLE | NAND_CTRL_CHANGE); - if (this->options & NAND_BUSWIDTH_16) + if ((this->options & NAND_BUSWIDTH_16) && !nand_opcode_8bits(cmd)) offs >>= 1; hwctrl(&mtd, offs & 0xff, NAND_CTRL_ALE | NAND_CTRL_CHANGE); diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index 5d3232c634..376976d579 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -575,7 +575,8 @@ static void nand_command(struct mtd_info *mtd, unsigned int command, /* Serially input address */ if (column != -1) { /* Adjust columns for 16 bit buswidth */ - if (chip->options & NAND_BUSWIDTH_16) + if ((chip->options & NAND_BUSWIDTH_16) && + !nand_opcode_8bits(command)) column >>= 1; chip->cmd_ctrl(mtd, column, ctrl); ctrl &= ~NAND_CTRL_CHANGE; @@ -668,7 +669,8 @@ static void nand_command_lp(struct mtd_info *mtd, unsigned int command, /* Serially input address */ if (column != -1) { /* Adjust columns for 16 bit buswidth */ - if (chip->options & NAND_BUSWIDTH_16) + if ((chip->options & NAND_BUSWIDTH_16) && + !nand_opcode_8bits(command)) column >>= 1; chip->cmd_ctrl(mtd, column, ctrl); ctrl &= ~NAND_CTRL_CHANGE; diff --git a/drivers/mtd/nand/nand_spl_simple.c b/drivers/mtd/nand/nand_spl_simple.c index cead4b506c..700ca324e2 100644 --- a/drivers/mtd/nand/nand_spl_simple.c +++ b/drivers/mtd/nand/nand_spl_simple.c @@ -78,7 +78,7 @@ static int nand_command(int block, int page, uint32_t offs, } /* Shift the offset from byte addressing to word addressing. */ - if (this->options & NAND_BUSWIDTH_16) + if ((this->options & NAND_BUSWIDTH_16) && !nand_opcode_8bits(cmd)) offs >>= 1; /* Begin command latch cycle */ diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index 0546565593..4be885823c 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -719,4 +719,14 @@ static inline int onfi_get_sync_timing_mode(struct nand_chip *chip) } #endif +/** + * Check if the opcode's address should be sent only on the lower 8 bits + * @command: opcode to check + */ +static inline int nand_opcode_8bits(unsigned int command) +{ + return command == NAND_CMD_READID; +} + + #endif /* __LINUX_MTD_NAND_H */ |