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ARM: sun7i/sun6i: irqchip: Update the documentation

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Add documentation for NMI irqchip.

Signed-off-by: Carlo Caione <carlo@caione.org>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-sunxi@googlegroups.com
Cc: mark.rutland@arm.com
Cc: hdegoede@redhat.com
Acked-by: maxime.ripard@free-electrons.com
Link: http://lkml.kernel.org/r/1395256879-8475-4-git-send-email-carlo@caione.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Carlo Caione 2014-03-19 20:21:19 +01:00 committed by Thomas Gleixner
parent 8ff973a267
commit ae7d9d3245
1 changed files with 27 additions and 0 deletions
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Documentation/devicetree/bindings/interrupt-controller/allwinner,sun67i-sc-nmi.txt Normal file
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Allwinner Sunxi NMI Controller
==============================
Required properties:
- compatible : should be "allwinner,sun7i-a20-sc-nmi" or
"allwinner,sun6i-a31-sc-nmi"
- reg : Specifies base physical address and size of the registers.
- interrupt-controller : Identifies the node as an interrupt controller
- #interrupt-cells : Specifies the number of cells needed to encode an
interrupt source. The value shall be 2. The first cell is the IRQ number, the
second cell the trigger type as defined in interrupt.txt in this directory.
- interrupt-parent: Specifies the parent interrupt controller.
- interrupts: Specifies the interrupt line (NMI) which is handled by
the interrupt controller in the parent controller's notation. This value
shall be the NMI.
Example:
sc-nmi-intc@01c00030 {
compatible = "allwinner,sun7i-a20-sc-nmi";
interrupt-controller;
#interrupt-cells = <2>;
reg = <0x01c00030 0x0c>;
interrupt-parent = <&gic>;
interrupts = <0 0 4>;
};