1 files changed, 3 insertions, 1 deletions

diff --git a/Documentation/gpio.txt b/Documentation/gpio.txt
index f8528db967fa..e8be0abb346c 100644
--- a/Documentation/gpio.txt
+++ b/Documentation/gpio.txt
@@ -66,7 +66,9 @@ registers; another might implement it by delegating through abstractions
 used for several very different kinds of GPIO controller.
 
 That said, if the convention is supported on their platform, drivers should
-use it when possible:
+use it when possible.  Platforms should declare GENERIC_GPIO support in
+Kconfig (boolean true), which multi-platform drivers can depend on when
+using the include file:
 
         #include <asm/gpio.h>