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Diffstat (limited to 'Documentation/devicetree/bindings/gpio/mrvl-gpio.txt')
-rw-r--r--Documentation/devicetree/bindings/gpio/mrvl-gpio.txt18
1 files changed, 12 insertions, 6 deletions
diff --git a/Documentation/devicetree/bindings/gpio/mrvl-gpio.txt b/Documentation/devicetree/bindings/gpio/mrvl-gpio.txt
index 1e34cfe..05428f3 100644
--- a/Documentation/devicetree/bindings/gpio/mrvl-gpio.txt
+++ b/Documentation/devicetree/bindings/gpio/mrvl-gpio.txt
@@ -3,19 +3,25 @@
Required properties:
- compatible : Should be "mrvl,pxa-gpio" or "mrvl,mmp-gpio"
- reg : Address and length of the register set for the device
-- interrupts : Should be the port interrupt shared by all gpio pins, if
-- interrupt-name : Should be the name of irq resource.
- one number.
+- interrupts : Should be the port interrupt shared by all gpio pins.
+ There're three gpio interrupts in arch-pxa, and they're gpio0,
+ gpio1 and gpio_mux. There're only one gpio interrupt in arch-mmp,
+ gpio_mux.
+- interrupt-name : Should be the name of irq resource. Each interrupt
+ binds its interrupt-name.
+- interrupt-controller : Identifies the node as an interrupt controller.
+- #interrupt-cells: Specifies the number of cells needed to encode an
+ interrupt source.
- gpio-controller : Marks the device node as a gpio controller.
- #gpio-cells : Should be one. It is the pin number.
Example:
gpio: gpio@d4019000 {
- compatible = "mrvl,mmp-gpio", "mrvl,pxa-gpio";
+ compatible = "mrvl,mmp-gpio";
reg = <0xd4019000 0x1000>;
- interrupts = <49>, <17>, <18>;
- interrupt-name = "gpio_mux", "gpio0", "gpio1";
+ interrupts = <49>;
+ interrupt-name = "gpio_mux";
gpio-controller;
#gpio-cells = <1>;
interrupt-controller;