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authorGuo Ren <ren_guo@c-sky.com>2018-09-18 21:07:00 +0800
committerGuo Ren <ren_guo@c-sky.com>2018-10-26 00:54:30 +0800
commit3fe5d5bd2dd92124f2a773c19fbc117e023a2ce3 (patch)
treed0ad3337a295c2b2e71eace69f0ff78da11c1fe7 /Documentation
parentd8a5f5f79122b42b8afdce29f03683c1b8cdb60e (diff)
downloadlinux-3fe5d5bd2dd92124f2a773c19fbc117e023a2ce3.tar.bz2
dt-bindings: interrupt-controller: C-SKY SMP intc
Dt-bindings doc about C-SKY Multi-processors interrupt controller. Changelog: - Should be: '#interrupt-cells' not 'interrupt-cells' Signed-off-by: Guo Ren <ren_guo@c-sky.com> Reviewed-by: Rob Herring <robh@kernel.org>
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+===========================================
+C-SKY Multi-processors Interrupt Controller
+===========================================
+
+C-SKY Multi-processors Interrupt Controller is designed for ck807/ck810/ck860
+SMP soc, and it also could be used in non-SMP system.
+
+Interrupt number definition:
+
+ 0-15 : software irq, and we use 15 as our IPI_IRQ.
+ 16-31 : private irq, and we use 16 as the co-processor timer.
+ 31-1024: common irq for soc ip.
+
+=============================
+intc node bindings definition
+=============================
+
+ Description: Describes SMP interrupt controller
+
+ PROPERTIES
+
+ - compatible
+ Usage: required
+ Value type: <string>
+ Definition: must be "csky,mpintc"
+ - #interrupt-cells
+ Usage: required
+ Value type: <u32>
+ Definition: must be <1>
+ - interrupt-controller:
+ Usage: required
+
+Examples:
+---------
+
+ intc: interrupt-controller {
+ compatible = "csky,mpintc";
+ #interrupt-cells = <1>;
+ interrupt-controller;
+ };