Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / Documentation / devicetree / bindings / gpio / abilis,tb10x-gpio.txt

diff --git a/kernel/Documentation/devicetree/bindings/gpio/abilis,tb10x-gpio.txt b/kernel/Documentation/devicetree/bindings/gpio/abilis,tb10x-gpio.txt
new file mode 100644 (file)
index 0000000..00611ac
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/gpio/abilis,tb10x-gpio.txt
@@ -0,0 +1,36 @@
+* Abilis TB10x GPIO controller
+
+Required Properties:
+- compatible: Should be "abilis,tb10x-gpio"
+- reg: Address and length of the register set for the device
+- gpio-controller: Marks the device node as a gpio controller.
+- #gpio-cells: Should be <2>. The first cell is the pin number and the
+  second cell is used to specify optional parameters:
+   - bit 0 specifies polarity (0 for normal, 1 for inverted).
+- abilis,ngpio: the number of GPIO pins this driver controls.
+
+Optional Properties:
+- interrupt-controller: Marks the device node as an interrupt controller.
+- #interrupt-cells: Should be <1>. Interrupts are triggered on both edges.
+- interrupts: Defines the interrupt line connecting this GPIO controller to
+  its parent interrupt controller.
+- interrupt-parent: Defines the parent interrupt controller.
+
+GPIO ranges are specified as described in
+Documentation/devicetree/bindings/gpio/gpio.txt
+
+Example:
+
+       gpioa: gpio@FF140000 {
+               compatible = "abilis,tb10x-gpio";
+               interrupt-controller;
+               #interrupt-cells = <1>;
+               interrupt-parent = <&tb10x_ictl>;
+               interrupts = <27 2>;
+               reg = <0xFF140000 0x1000>;
+               gpio-controller;
+               #gpio-cells = <2>;
+               abilis,ngpio = <3>;
+               gpio-ranges = <&iomux 0 0 0>;
+               gpio-ranges-group-names = "gpioa_pins";
+       };