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Commit 8b8319c8 authored by Frank Li's avatar Frank Li Committed by Brian Norris
Browse files

mtd: spi-nor: 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: default avatarHuang Shijie <shijie8@gmail.com>
Signed-off-by: default avatarFrank Li <Frank.Li@freescale.com>
Signed-off-by: default avatarBrian Norris <computersforpeace@gmail.com>
parent 5cc66cb7

drivers/mtd/spi-nor/fsl-quadspi.c

+8 −0
Original line number Diff line number Diff line
@@ -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);