diff options
| author | Huang Shijie <b32955@freescale.com> | 2014-03-14 15:13:36 +0800 |
|---|---|---|
| committer | Nitin Garg <nitin.garg@freescale.com> | 2014-04-16 08:57:59 -0500 |
| commit | f9315d91ea2451dde9948762427e2babac2fc5d2 (patch) | |
| tree | 20f9a399797590ae2fefe4e78d63641a148ba68d /drivers/mtd | |
| parent | 65ed5f098398bf5bd588f692add3c80798017c4c (diff) | |
ENGR00303533 mtd: fsl-quadspi: reset the module in the probe
The uboot may run the QuadSpi controler with command:
#sf probe
So we should reset the module in the probe.
This patch also clear the pending interrupts which arised by the uboot
code.
Signed-off-by: Huang Shijie <b32955@freescale.com>
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/spi-nor/fsl-quadspi.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/mtd/spi-nor/fsl-quadspi.c b/drivers/mtd/spi-nor/fsl-quadspi.c index 08878b9634db..66664e2b9215 100644 --- a/drivers/mtd/spi-nor/fsl-quadspi.c +++ b/drivers/mtd/spi-nor/fsl-quadspi.c @@ -655,6 +655,11 @@ static int fsl_qspi_nor_setup(struct fsl_qspi *q) if (ret) return ret; + /* Reset the module */ + writel(QUADSPI_MCR_SWRSTSD_MASK | QUADSPI_MCR_SWRSTHD_MASK, + base + QUADSPI_MCR); + udelay(1); + /* Init the LUT table. */ fsl_qspi_init_lut(q); @@ -673,6 +678,7 @@ static int fsl_qspi_nor_setup(struct fsl_qspi *q) base + QUADSPI_MCR); /* enable the interrupt */ + writel(0xffffffff, q->iobase + QUADSPI_FR); writel(QUADSPI_RSER_TFIE, q->iobase + QUADSPI_RSER); return 0; |