[PATCH 03/13] irqchip: renesas-irqc: Add DT binding documentation

[Geert Uytterhoeven]

The renesas-irqc driver supports DT, but the DT binding documentation was
missing.

Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
---
 .../bindings/interrupt-controller/renesas,irqc.txt | 30 ++++++++++++++++++++++
 1 file changed, 30 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/interrupt-controller/renesas,irqc.txt

diff --git a/Documentation/devicetree/bindings/interrupt-controller/renesas,irqc.txt b/Documentation/devicetree/bindings/interrupt-controller/renesas,irqc.txt
new file mode 100644
index 000000000000..f819e2a5907c
--- /dev/null
+++ b/Documentation/devicetree/bindings/interrupt-controller/renesas,irqc.txt
@@ -0,0 +1,30 @@
+DT bindings for the R-Mobile/R-Car interrupt controller
+
+Required properties:
+
+- compatible: has to be "renesas,irqc-<soctype>", "renesas,irqc" as fallback.
+  Examples with soctypes are:
+    - "renesas,irqc-r8a73a4" (R-Mobile AP6)
+    - "renesas,irqc-r8a7790" (R-Car H2)
+    - "renesas,irqc-r8a7791" (R-Car M2)
+- #interrupt-cells: has to be <2>: an interrupt index and flags, as defined in
+  interrupts.txt in this directory
+
+Optional properties:
+
+- any properties, listed in interrupts.txt, and any standard resource allocation
+  properties
+
+Example:
+
+	irqc0: interrupt-controller@e61c0000 {
+		compatible = "renesas,irqc-r8a7790", "renesas,irqc";
+		#interrupt-cells = <2>;
+		interrupt-controller;
+		reg = <0 0xe61c0000 0 0x200>;
+		interrupts = <0 0 IRQ_TYPE_LEVEL_HIGH>,
+			     <0 1 IRQ_TYPE_LEVEL_HIGH>,
+			     <0 2 IRQ_TYPE_LEVEL_HIGH>,
+			     <0 3 IRQ_TYPE_LEVEL_HIGH>;
+	};
+
-- 
1.9.1

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