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| author | Huang Shijie <b32955@freescale.com> | 2014-04-28 11:53:38 +0800 |
|---|---|---|
| committer | Brian Norris <computersforpeace@gmail.com> | 2014-11-05 00:26:06 -0800 |
| commit | 0b78a2cf2a73b5f32ffda8cde7866ca61ce0e0b7 (patch) | |
| tree | 3dcf558989b2bc68416ec9abbf97556fe366be84 /drivers/mtd/devices | |
| parent | 438320dd34a4d0b2b177fbae749c3b9d00532faf (diff) | |
| download | op-kernel-dev-0b78a2cf2a73b5f32ffda8cde7866ca61ce0e0b7.zip op-kernel-dev-0b78a2cf2a73b5f32ffda8cde7866ca61ce0e0b7.tar.gz | |
mtd: spi-nor: fix the wrong dummy value
For the DDR Quad read, the dummy cycles maybe 3 or 6 which is less then 8.
The dummy cycles is actually 8 for SPI fast/dual/quad read.
This patch makes preparations for the DDR quad read, it fixes the wrong dummy
value for both the spi-nor.c and m25p80.c.
Signed-off-by: Huang Shijie <b32955@freescale.com>
Acked-by: Marek Vasut <marex@denx.de>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Diffstat (limited to 'drivers/mtd/devices')
| -rw-r--r-- | drivers/mtd/devices/m25p80.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c index ed827cf..5d44825 100644 --- a/drivers/mtd/devices/m25p80.c +++ b/drivers/mtd/devices/m25p80.c @@ -128,9 +128,12 @@ static int m25p80_read(struct spi_nor *nor, loff_t from, size_t len, struct spi_device *spi = flash->spi; struct spi_transfer t[2]; struct spi_message m; - int dummy = nor->read_dummy; + unsigned int dummy = nor->read_dummy; int ret; + /* convert the dummy cycles to the number of bytes */ + dummy /= 8; + /* Wait till previous write/erase is done. */ ret = nor->wait_till_ready(nor); if (ret) |
