diff --git a/include/linux/pinctrl/pinconf-generic.h b/include/linux/pinctrl/pinconf-generic.h
index fb90ef5eb03897d4a59be1f5500bee493e7119e9..282309d7c4dc76d44e2438186d6c787d4e9edf35 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.