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-rw-r--r--Documentation/gpio/board.txt11
1 files changed, 7 insertions, 4 deletions
diff --git a/Documentation/gpio/board.txt b/Documentation/gpio/board.txt
index 40884c4fe40c..a0f61898d493 100644
--- a/Documentation/gpio/board.txt
+++ b/Documentation/gpio/board.txt
@@ -6,7 +6,7 @@ Note that it only applies to the new descriptor-based interface. For a
description of the deprecated integer-based GPIO interface please refer to
gpio-legacy.txt (actually, there is no real mapping possible with the old
interface; you just fetch an integer from somewhere and request the
-corresponding GPIO.
+corresponding GPIO).
All platforms can enable the GPIO library, but if the platform strictly
requires GPIO functionality to be present, it needs to select GPIOLIB from its
@@ -162,6 +162,9 @@ The driver controlling "foo.0" will then be able to obtain its GPIOs as follows:
Since the "led" GPIOs are mapped as active-high, this example will switch their
signals to 1, i.e. enabling the LEDs. And for the "power" GPIO, which is mapped
-as active-low, its actual signal will be 0 after this code. Contrary to the legacy
-integer GPIO interface, the active-low property is handled during mapping and is
-thus transparent to GPIO consumers.
+as active-low, its actual signal will be 0 after this code. Contrary to the
+legacy integer GPIO interface, the active-low property is handled during
+mapping and is thus transparent to GPIO consumers.
+
+A set of functions such as gpiod_set_value() is available to work with
+the new descriptor-oriented interface.