pinctrl: at91-pio4: fix pull-up/down logic

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commit 5305a7b7e8 upstream.

The default configuration of a pin is often with a value in the
pull-up/down field at chip reset. So, even if the internal logic of the
controller prevents writing a configuration with pull-up and pull-down at
the same time, we must ensure explicitly this condition before writing the
register.

This was leading to a pull-down condition not taken into account for
instance.

Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Fixes: 776180848b ("pinctrl: introduce driver for Atmel PIO4 controller")
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Ludovic Desroches 2016-04-19 16:03:45 +02:00 • committed by Greg Kroah-Hartman

parent 1441dcbdcb

commit 1fba064f78

1 changed files with 2 additions and 0 deletions

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drivers/pinctrl/pinctrl-at91-pio4.c

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