diff options
| author | Han Xu <b45815@freescale.com> | 2015-06-11 14:50:47 -0500 |
|---|---|---|
| committer | Han Xu <b45815@freescale.com> | 2015-06-11 15:15:08 -0500 |
| commit | 0d373abd5734eb3b8adcee0c09136c1a4e712fd2 (patch) | |
| tree | 5b106d557ab5ff4c34dbee97570e060f33f41c27 /drivers | |
| parent | 374e8f4b518e8c9a307d3208550dfedd69d266a4 (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 bde382480e9c3ba3ba1f0f4c73f77df894482699)
Diffstat (limited to 'drivers')
| -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); |