@@ -5,9 +5,16 @@ Required properties:
- reg: Should contain GPIO controller registers location and length
- interrupts: Should be the port interrupt shared by all the pins.
- #gpio-cells: Should be two. The first cell is the pin number and
- the second cell is used to specify optional parameters (currently
- unused).
+ the second cell is used to specify optional parameters to declare if the GPIO
+ is active high or low. See gpio.txt.
- gpio-controller: Marks the device node as a GPIO controller.
+- interrupt-controller: Marks the device node as a GPIO controller.
+- #interrupt-cells: Should be two. The first cell is the pin number and the
+ second cell is used to specify irq type flags:
+ 1 = low-to-high edge triggered.
+ 2 = high-to-low edge triggered.
+ 4 = active high level-sensitive.
+ 8 = active low level-sensitive.
optional properties:
- #gpio-lines: Number of gpio if absent 32.
@@ -21,5 +28,7 @@ Example:
#gpio-cells = <2>;
gpio-controller;
#gpio-lines = <19>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
};
The second cell in a gpio reference is used to pass GPIO_ACTIVE_LOW or GPIO_ACTIVE_HIGH. The gpio device can also be used as irq controller and a reference can contain the IRQ_TYPE_* values in the second cell. Signed-off-by: Uwe Kleine-König <uwe@kleine-koenig.org> --- Documentation/devicetree/bindings/gpio/gpio_atmel.txt | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-)