diff options
| author | Han Xu <b45815@freescale.com> | 2015-06-11 14:50:47 -0500 |
|---|---|---|
| committer | Leonard Crestez <leonard.crestez@nxp.com> | 2018-08-24 12:20:42 +0300 |
| commit | d7f1fea79c12ad0595850e5c576a23a81d546856 (patch) | |
| tree | b3b9cfd9120cae68059e3087cd5885bca2d9edbc /drivers/mtd | |
| parent | b166f3645ef7d89eec58ac1e51e4e4bb4fa1835a (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>
(cherry picked from commit d8b51cc358780f68e732522ee9bd6bd578dd6771)
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 0a1f8641d3bc..1b04099c5ab5 100644 --- a/drivers/mtd/spi-nor/fsl-quadspi.c +++ b/drivers/mtd/spi-nor/fsl-quadspi.c @@ -807,6 +807,14 @@ 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 */ qspi_writel(q, QUADSPI_MCR_SWRSTSD_MASK | QUADSPI_MCR_SWRSTHD_MASK, base + QUADSPI_MCR); |