aboutsummaryrefslogtreecommitdiffstats
path: root/Documentation/devicetree
diff options
context:
space:
mode:
authorAlexander Shiyan <shc_work@mail.ru>2014-03-11 21:55:14 +0400
committerLinus Walleij <linus.walleij@linaro.org>2014-03-18 09:28:31 +0100
commit6a8a0c1d87377c6ce97de2fedc0762c2fa8233ac (patch)
treef587b88cc527e7902dbf07bbc5b21310cce1ef32 /Documentation/devicetree
parent193385305b71b329b8fbec2c0465d4afd3f946b8 (diff)
gpio: Driver for SYSCON-based GPIOs
SYSCON driver was designed for using memory areas (registers) that are used in several subsystems. There are systems (CPUs) which use bits in one register for various purposes and thus should be handled by various kernel subsystems. This driver allows you to use the individual SYSCON bits as GPIOs. ARM CLPS711X SYSFLG1 input lines has been added as first user of this driver. Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'Documentation/devicetree')
-rw-r--r--Documentation/devicetree/bindings/gpio/cirrus,clps711x-mctrl-gpio.txt17
1 files changed, 17 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/gpio/cirrus,clps711x-mctrl-gpio.txt b/Documentation/devicetree/bindings/gpio/cirrus,clps711x-mctrl-gpio.txt
new file mode 100644
index 000000000000..94ae9f82dcf8
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/cirrus,clps711x-mctrl-gpio.txt
@@ -0,0 +1,17 @@
+* ARM Cirrus Logic CLPS711X SYSFLG1 MCTRL GPIOs
+
+Required properties:
+- compatible: Should contain "cirrus,clps711x-mctrl-gpio".
+- gpio-controller: Marks the device node as a gpio controller.
+- #gpio-cells: Should be two. The first cell is the pin number and
+ the second cell is used to specify the gpio polarity:
+ 0 = Active high,
+ 1 = Active low.
+
+Example:
+ sysgpio: sysgpio {
+ compatible = "cirrus,ep7312-mctrl-gpio",
+ "cirrus,clps711x-mctrl-gpio";
+ gpio-controller;
+ #gpio-cells = <2>;
+ };

Privacy Policy