linux-kernel - [PATCH V3 21/26] dt-bindings: interrupt-controller: C-SKY APB intc

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Message-Id: <62dae1828ade759584bbf1507fe4a9e69d247a50.1536138304.git.ren_guo@c-sky.com>
Date:   Wed,  5 Sep 2018 20:08:00 +0800
From:   Guo Ren <ren_guo@...ky.com>
To:     linux-arch@...r.kernel.org, linux-kernel@...r.kernel.org,
        tglx@...utronix.de, daniel.lezcano@...aro.org,
        jason@...edaemon.net, arnd@...db.de
Cc:     c-sky_gcc_upstream@...ky.com, gnu-csky@...tor.com,
        thomas.petazzoni@...tlin.com, wbx@...ibc-ng.org, ren_guo@...ky.com,
        green.hu@...il.com
Subject: [PATCH V3 21/26] dt-bindings: interrupt-controller: C-SKY APB intc

Signed-off-by: Guo Ren <ren_guo@...ky.com>
---
 .../interrupt-controller/csky,apb-intc.txt         | 45 ++++++++++++++++++++++
 1 file changed, 45 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/interrupt-controller/csky,apb-intc.txt

diff --git a/Documentation/devicetree/bindings/interrupt-controller/csky,apb-intc.txt b/Documentation/devicetree/bindings/interrupt-controller/csky,apb-intc.txt
new file mode 100644
index 0000000..faa482c
--- /dev/null
+++ b/Documentation/devicetree/bindings/interrupt-controller/csky,apb-intc.txt
@@ -0,0 +1,45 @@
+==============================
+C-SKY APB Interrupt Controller
+==============================
+
+C-SKY APB Interrupt Controller is a simple soc interrupt controller
+on the apb bus and we only use it as root irq controller.
+
+ - csky,apb-intc is used in a lot of csky fpgas and socs, it support 64 irq nums.
+ - csky,dual-apb-intc consists of 2 apb-intc and 128 irq nums supported.
+ - csky,gx6605s-intc is gx6605s soc internal irq interrupt controller, 64 irq nums.
+
+=============================
+intc node bindings definition
+=============================
+
+        Description: Describes APB interrupt controller
+
+        PROPERTIES
+
+        - compatible
+                Usage: required
+                Value type: <string>
+                Definition: must be "csky,apb-intc"
+				    "csky,dual-apb-intc"
+				    "csky,gx6605s-intc"
+        - interrupt-cells
+                Usage: required
+                Value type: <u32>
+                Definition: must be <1>
+	- reg
+		Usage: required
+		Value type: <u32 u32>
+                Definition: <phyaddr size> in soc from cpu view
+        - interrupt-controller:
+                Usage: required
+
+Examples:
+---------
+
+	intc: interrupt-controller {
+		compatible = "csky,apb-intc";
+		#interrupt-cells = <1>;
+		reg = <0x00500000 0x400>;
+		interrupt-controller;
+	};
-- 
2.7.4