diff options
| author | Huang Shijie <b32955@freescale.com> | 2014-04-16 16:18:19 +0800 |
|---|---|---|
| committer | Nitin Garg <nitin.garg@freescale.com> | 2015-09-17 08:58:08 -0500 |
| commit | 296bd20f3daabf024d331e36ef1d9eeb1b502612 (patch) | |
| tree | f4c7349ac49ddcd146f15e2ccb9d0ec3bf88c572 /drivers/mtd/devices/m25p80.c | |
| parent | f7c00c0c9d5294009670dd553a85d864766f3576 (diff) | |
ENGR00318895-2 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>
Diffstat (limited to 'drivers/mtd/devices/m25p80.c')
| -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 ed7e0a1bed3c..6205b22535af 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) |