iio: adc: ad7768-1: set MOSI idle state to prevent accidental reset

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[ Upstream commit 2416cec859 ]

Datasheet recommends Setting the MOSI idle state to high in order to
prevent accidental reset of the device when SCLK is free running.
This happens when the controller clocks out a 1 followed by 63 zeros
while the CS is held low.

Check if SPI controller supports SPI_MOSI_IDLE_HIGH flag and set it.

Fixes: a5f8c7da3d ("iio: adc: Add AD7768-1 ADC basic support")
Signed-off-by: Jonathan Santos <Jonathan.Santos@analog.com>
Reviewed-by: Marcelo Schmitt <marcelo.schmitt@analog.com>
Link: https://patch.msgid.link/c2a2b0f3d54829079763a5511359a1fa80516cfb.1741268122.git.Jonathan.Santos@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Jonathan Santos 2025-03-06 18:00:43 -03:00 • committed by Greg Kroah-Hartman

parent dd63910063

commit 967570b528

1 changed files with 15 additions and 0 deletions

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drivers/iio/adc/ad7768-1.c

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