[PATCH v2 2/5] irqchip: Add DT binding doc for dumb demuxer chips
From: Boris Brezillon <hidden>
Date: 2015-01-13 18:48:11
Also in:
linux-devicetree, lkml
Subsystem:
irqchip drivers, open firmware and flattened device tree bindings, the rest · Maintainers:
Thomas Gleixner, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
Add documentation for the dumb demuxer. Signed-off-by: Boris Brezillon <redacted> --- .../bindings/interrupt-controller/dumb-demux.txt | 34 ++++++++++++++++++++++ 1 file changed, 34 insertions(+) create mode 100644 Documentation/devicetree/bindings/interrupt-controller/dumb-demux.txt
diff --git a/Documentation/devicetree/bindings/interrupt-controller/dumb-demux.txt b/Documentation/devicetree/bindings/interrupt-controller/dumb-demux.txt
new file mode 100644
index 0000000..1c777ef
--- /dev/null
+++ b/Documentation/devicetree/bindings/interrupt-controller/dumb-demux.txt@@ -0,0 +1,34 @@ +* Generic Dumb Interrupt Demultiplexer + +This Dumb demultiplixer simply forward all incoming interrupts to its +enabled/unmasked children. + +Required properties: +- compatible: Should be "irqchip-dumb-demux". +- interrupt-controller: Identifies the node as an interrupt controller. +- interrupts-extended or interrupt-parent and interrupts: Reference the source + interrupt connected to this dumb demuxer. +- #interrupt-cells: The number of cells to define the interrupts (should be 1). + The only cell is the IRQ number. +- irqs: u32 bitfield specifying the interrupts provided by the demuxer. + +Examples: + /* + * Dumb demuxer controller + */ + dumb_irq1_demux: dumb-irq-demux at 1 { + compatible = "irqchip-dumb-demux"; + interrupt-controller; + #interrupt-cells = <1>; + interrupts-extended = <&aic 1 IRQ_TYPE_LEVEL_HIGH 7>; + irqs = <0x3f>; + }; + + /* + * Device connected on this dumb demuxer + */ + dma: dma-controller at ffffec00 { + compatible = "atmel,at91sam9g45-dma"; + reg = <0xffffec00 0x200>; + interrupts-extended = <&dumb_irq1_demux 0>; + };
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1.9.1