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Commit 787dfbb2 authored by Soren Brinkmann's avatar Soren Brinkmann Committed by Linus Walleij
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gpio: zynq: Document interrupt-controller DT binding 



HW and driver support the GPIO as interrupt-controller.
Document that in the DT binding.

Signed-off-by: default avatarSoren Brinkmann <soren.brinkmann@xilinx.com>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent 79786721

Documentation/devicetree/bindings/gpio/gpio-zynq.txt

+9 −0
Original line number Original line Diff line number Diff line
@@ -12,6 +12,13 @@ Required properties: 
- interrupts		: Interrupt specifier (see interrupt bindings for

- interrupts		: Interrupt specifier (see interrupt bindings for

			  details)

			  details)

- interrupt-parent	: Must be core interrupt controller

- 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

- reg			: Address and length of the register set for the device





Example:

Example:
@@ -22,5 +29,7 @@ Example: 
		gpio-controller;

		gpio-controller;

		interrupt-parent = <&intc>;

		interrupt-parent = <&intc>;

		interrupts = <0 20 4>;

		interrupts = <0 20 4>;

		interrupt-controller;

		#interrupt-cells = <2>;

		reg = <0xe000a000 0x1000>;

		reg = <0xe000a000 0x1000>;

	};
 
	};