linux-kernel - [PATCH 1/3] DT binding: gpio-zynq: Document interrupt-controller

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Message-ID: <1445617532-10228-1-git-send-email-soren.brinkmann@xilinx.com>
Date:	Fri, 23 Oct 2015 09:25:30 -0700
From:	Soren Brinkmann <soren.brinkmann@...inx.com>
To:	Rob Herring <robh+dt@...nel.org>, Pawel Moll <pawel.moll@....com>,
	"Mark Rutland" <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Michal Simek <michal.simek@...inx.com>,
	Linus Walleij <linus.walleij@...aro.org>
CC:	Russell King <linux@....linux.org.uk>,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will.deacon@....com>,
	<linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<devicetree@...r.kernel.org>,
	Soren Brinkmann <soren.brinkmann@...inx.com>
Subject: [PATCH 1/3] DT binding: gpio-zynq: Document interrupt-controller

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

Signed-off-by: Soren Brinkmann <soren.brinkmann@...inx.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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