spi: bcm2835aux: setup gpio-cs to output and correct level during setup

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Setup gpio-cs to the correct levels during setup and also make the
gpio definitely an output GPIO.

This is transparently fixing some badly configured DTs in the process
where cs-gpio is set but the gpios are still configured with native cs.

It also makes 100% sure that the initial CS levels are as expected -
especially on systems with devices on a bus with mixed CS_HIGH/CS_LOW
settings.

Fixes: 1ea29b39f4 ("spi: bcm2835aux: add bcm2835 auxiliary spi device...")
Signed-off-by: Martin Sperl <kernel@martin.sperl.org>
Acked-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

...

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Martin Sperl 2019-03-30 09:31:04 +00:00 • committed by Mark Brown

parent 519f2c22a6

commit ccd978b708

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1 changed files with 14 additions and 2 deletions

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drivers/spi/spi-bcm2835aux.c

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