Add dt binding documentation for Amlogic meson GPIO interrupt controller.
Signed-off-by: Heiner Kallweit <hkallweit1@xxxxxxxxx>
Reviewed-by: Neil Armstrong <narmstrong@xxxxxxxxxxxx>
Acked-by: Rob Herring <robh@xxxxxxxxxx>
---
v5:
- added Reviewed-by
v6:
- rename parent-interrupts to interrupts
v7:
- no changes
---
.../amlogic,meson-gpio-intc.txt | 26 ++++++++++++++++++++++
1 file changed, 26 insertions(+)
create mode 100644 Documentation/devicetree/bindings/interrupt-controller/amlogic,meson-gpio-intc.txt
diff --git a/Documentation/devicetree/bindings/interrupt-controller/amlogic,meson-gpio-intc.txt b/Documentation/devicetree/bindings/interrupt-controller/amlogic,meson-gpio-intc.txt
new file mode 100644
index 00000000..4c9bb323
--- /dev/null
+++ b/Documentation/devicetree/bindings/interrupt-controller/amlogic,meson-gpio-intc.txt
@@ -0,0 +1,26 @@
+Amlogic meson GPIO interrupt controller
+
+Meson SoCs contains an interrupt controller which is able watch the SoC pads
+and generate an interrupt on edges or level. The controller is essentially a
+256 pads to 8 GIC interrupt multiplexer, with a filter block to select edge
+or level and polarity. The actual number of interrupt exposed depends on the
+SoC.
+
+Required properties:
+
+- compatible : should be "amlogic,meson-gpio-intc".
+- reg : Specifies base physical address and size of the registers.
+- interrupt-controller : Identifies the node as an interrupt controller.
+- #interrupt-cells : should be 2.
+- interrupts : list of GIC interrupts which can be used with the
+ GPIO IRQ multiplexer
+
+Example:
+
+gpio_intc: interrupt-controller@9880 {
+ compatible = "amlogic,meson-gpio-intc";
+ reg = <0x0 0x09880 0x0 0x10>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ interrupts = <64 65 66 67 68 69 70 71>;
+};
--
2.13.1
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