linux-kernel - [PATCH 10/14] devicetree: Add bindings for the ATH79 GPIO controllers

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Message-Id: <1429280669-2986-11-git-send-email-albeu@free.fr>
Date:	Fri, 17 Apr 2015 16:24:25 +0200
From:	Alban Bedel <albeu@...e.fr>
To:	linux-mips@...ux-mips.org
Cc:	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>,
	Thomas Gleixner <tglx@...utronix.de>,
	Jason Cooper <jason@...edaemon.net>,
	Ralf Baechle <ralf@...ux-mips.org>,
	Alban Bedel <albeu@...e.fr>,
	Andrew Bresticker <abrestic@...omium.org>,
	Qais Yousef <qais.yousef@...tec.com>,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 10/14] devicetree: Add bindings for the ATH79 GPIO controllers

These bindings support the GPIO controllers found on the Qualcomm
Atheros AR7xxx/AR9XXX SoC.

Signed-off-by: Alban Bedel <albeu@...e.fr>
---
 .../devicetree/bindings/gpio/gpio-ath79.txt        | 40 ++++++++++++++++++++++
 1 file changed, 40 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/gpio/gpio-ath79.txt

diff --git a/Documentation/devicetree/bindings/gpio/gpio-ath79.txt b/Documentation/devicetree/bindings/gpio/gpio-ath79.txt
new file mode 100644
index 0000000..663c0b6
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/gpio-ath79.txt
@@ -0,0 +1,40 @@
+Binding for Qualcomm  Atheros AR7xxx/AR9xxx GPIO controller
+
+Required properties:
+- compatible: has to be "qca,<soctype>-gpio" and one of the following
+  fallback:
+  - "qca,ar7100-gpio"
+  - "qca,ar7240-gpio"
+  - "qca,ar7241-gpio"
+  - "qca,ar9130-gpio"
+  - "qca,ar9330-gpio"
+  - "qca,ar9340-gpio"
+  - "qca,qca9550-gpio"
+- reg: Base address and size of the controllers memory area
+- gpio-controller : Marks the device node as a GPIO controller.
+- #gpio-cells : Should be two. The first cell is the pin number and the
+  second cell is used to specify optional parameters.
+
+Optional properties:
+- interrupt-parent: phandle of the parent interrupt controller.
+- interrupts: Interrupt specifier for the controllers interrupt.
+- interrupt-controller : Identifies the node as an interrupt controller
+- #interrupt-cells : Specifies the number of cells needed to encode interrupt
+		     source, should be 2
+
+Please refer to interrupts.txt in this directory for details of the common
+Interrupt Controllers bindings used by client devices.
+
+Example:
+
+	gpio@...40000 {
+		compatible = "qca,ar9132-gpio", "qca,ar9130-gpio";
+		reg = <0x18040000 0x30>;
+		interrupts = <2>;
+
+		gpio-controller;
+		#gpio-cells = <2>;
+
+		interrupt-controller;
+		#interrupt-cells = <2>;
+	};
-- 
2.0.0

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