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pinctrl: bcm2835: Add support for output-low output-high properties

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Properties to set initial value of pin output buffer.
This can be useful for configure hardware in overlay files, and in early
boot for checking it states in QA sanity tests.

Signed-off-by: Matheus Castello <matheus@castello.eng.br>
Reviewed-by: Eric Anholt <eric@anholt.net>
Acked-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Matheus Castello 2018-04-30 20:42:14 -04:00 committed by Linus Walleij
parent 0de704955e
commit 90b60552a2
1 changed files with 5 additions and 0 deletions
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5
drivers/pinctrl/bcm/pinctrl-bcm2835.c
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@ -965,6 +965,11 @@ static int bcm2835_pinconf_set(struct pinctrl_dev *pctldev,
bcm2835_pull_config_set(pc, pin, BCM2835_PUD_UP);
break;
/* Set output-high or output-low */
case PIN_CONFIG_OUTPUT:
bcm2835_gpio_set_bit(pc, arg ? GPSET0 : GPCLR0, pin);
break;
default:
return -EINVAL;