From e9c9489f1077880cb8332f3e1600bf8edba3e86a Mon Sep 17 00:00:00 2001 From: Linus Walleij <linus.walleij@linaro.org> Date: Mon, 25 Nov 2013 15:43:37 +0100 Subject: [PATCH] pinctrl: provide documentation pointer The PIN_CONFIG_OUTPUT parameter is really tricky to understand and needs an explicit pointer to the documentation. Cc: Tomasz Figa <t.figa@samsung.com> Cc: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> --- include/linux/pinctrl/pinconf-generic.h | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/include/linux/pinctrl/pinconf-generic.h b/include/linux/pinctrl/pinconf-generic.h index fb90ef5eb0389..282309d7c4dc7 100644 --- a/include/linux/pinctrl/pinconf-generic.h +++ b/include/linux/pinctrl/pinconf-generic.h @@ -82,8 +82,10 @@ * operation, if several modes of operation are supported these can be * passed in the argument on a custom form, else just use argument 1 * to indicate low power mode, argument 0 turns low power mode off. - * @PIN_CONFIG_OUTPUT: this will configure the pin in output, use argument - * 1 to indicate high level, argument 0 to indicate low level. + * @PIN_CONFIG_OUTPUT: this will configure the pin as an output. Use argument + * 1 to indicate high level, argument 0 to indicate low level. (Please + * see Documentation/pinctrl.txt, section "GPIO mode pitfalls" for a + * discussion around this parameter.) * @PIN_CONFIG_END: this is the last enumerator for pin configurations, if * you need to pass in custom configurations to the pin controller, use * PIN_CONFIG_END+1 as the base offset. -- GitLab