HW and driver support the GPIO as interrupt-controller. Document that in
the DT binding.
Signed-off-by: Soren Brinkmann <soren.brinkm...@xilinx.com>
---
Documentation/devicetree/bindings/gpio/gpio-zynq.txt | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/Documentation/devicetree/bindings/gpio/gpio-zynq.txt
b/Documentation/devicetree/bindings/gpio/gpio-zynq.txt
index db4c6a663c03..7b542657f259 100644
--- a/Documentation/devicetree/bindings/gpio/gpio-zynq.txt
+++ b/Documentation/devicetree/bindings/gpio/gpio-zynq.txt
@@ -12,6 +12,13 @@ Required properties:
- interrupts : Interrupt specifier (see interrupt bindings for
details)
- interrupt-parent : Must be core interrupt controller
+- interrupt-controller : Marks the device node as an interrupt controller.
+- #interrupt-cells : Should be 2. The first cell is the GPIO number.
+ The second cell bits[3:0] is used to specify trigger
type and level flags:
+ 1 = low-to-high edge triggered.
+ 2 = high-to-low edge triggered.
+ 4 = active high level-sensitive.
+ 8 = active low level-sensitive.
- reg : Address and length of the register set for the device
Example:
@@ -22,5 +29,7 @@ Example:
gpio-controller;
interrupt-parent = <&intc>;
interrupts = <0 20 4>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
reg = <0xe000a000 0x1000>;
};
--
2.6.2.3.ga463a5b
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