diff options
| author | Han Xu <b45815@freescale.com> | 2015-06-11 14:50:47 -0500 |
|---|---|---|
| committer | Nitin Garg <nitin.garg@freescale.com> | 2015-09-17 09:23:40 -0500 |
| commit | d8b51cc358780f68e732522ee9bd6bd578dd6771 (patch) | |
| tree | 3a2d92a67f68ee308bb786fb1c163bf1567e7cf6 /drivers/mtd | |
| parent | e03fdad1c7713a7db70112e00c4ae96848accd34 (diff) | |
MLK-11095: mtd:qspi: clear the DDR_EN bit on 6UL and 7D
the obsolete bit DDR_EN on 6UL and 7D should be clear in case other
program set the bit and cause qspi probe fail.
Signed-off-by: Han Xu <b45815@freescale.com>
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/spi-nor/fsl-quadspi.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/mtd/spi-nor/fsl-quadspi.c b/drivers/mtd/spi-nor/fsl-quadspi.c index 7a5e25262199..7ab261f03ae3 100644 --- a/drivers/mtd/spi-nor/fsl-quadspi.c +++ b/drivers/mtd/spi-nor/fsl-quadspi.c @@ -780,6 +780,14 @@ static int fsl_qspi_nor_setup(struct fsl_qspi *q) if (ret) return ret; + if ((q->devtype_data->devtype == FSL_QUADSPI_IMX6UL) || + (q->devtype_data->devtype == FSL_QUADSPI_IMX7D)) { + /* clear the DDR_EN bit for 6UL and 7D */ + reg = readl(base + QUADSPI_MCR); + writel(~(QUADSPI_MCR_DDR_EN_MASK) & reg, base + QUADSPI_MCR); + udelay(1); + } + /* Reset the module */ writel(QUADSPI_MCR_SWRSTSD_MASK | QUADSPI_MCR_SWRSTHD_MASK, base + QUADSPI_MCR); |