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Subject[PATCH] spi: atmel-quadspi: Disable the QSPI IP at suspend()
It is safer to disable the QSPI IP at suspend, in order to avoid
possible impact of glitches on the internal FSMs. This is a theoretical
fix, there were no problems seen as of now. Tested on sama5d2 and
sam9x60 versions of the IP.

Signed-off-by: Tudor Ambarus <>
drivers/spi/atmel-quadspi.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/spi/atmel-quadspi.c b/drivers/spi/atmel-quadspi.c
index 10bc5390ab91..95d4fa32c299 100644
--- a/drivers/spi/atmel-quadspi.c
+++ b/drivers/spi/atmel-quadspi.c
@@ -657,6 +657,7 @@ static int __maybe_unused atmel_qspi_suspend(struct device *dev)
struct spi_controller *ctrl = dev_get_drvdata(dev);
struct atmel_qspi *aq = spi_controller_get_devdata(ctrl);

+ atmel_qspi_write(QSPI_CR_QSPIDIS, aq, QSPI_CR);

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