A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-29 03:01:39 -04:00
Code Issues Projects Releases Packages Wiki Activity

mtd: spi-nor: fsl-quadspi: reset the module in the probe

Browse source 
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 <[email protected]>
Signed-off-by: Frank Li <[email protected]>
Signed-off-by: Brian Norris <[email protected]>
This commit is contained in:
Frank Li 2015-08-04 10:26:10 -05:00 • committed by Brian Norris
commit 8b8319c8b7
1 changed files with 8 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

8
drivers/mtd/spi-nor/fsl-quadspi.c
View file

@ -716,6 +716,11 @@ 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);
@ -733,6 +738,9 @@ static int fsl_qspi_nor_setup(struct fsl_qspi *q)
writel(QUADSPI_MCR_RESERVED_MASK | QUADSPI_MCR_END_CFG_MASK,
base + QUADSPI_MCR);
/* clear all interrupt status */
writel(0xffffffff, q->iobase + QUADSPI_FR);
/* enable the interrupt */
writel(QUADSPI_RSER_TFIE, q->iobase + QUADSPI_RSER);