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dt-bindings: interrupt-controller: C-SKY APB intc

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- Dt-bindings doc about C-SKY apb bus interrupt controller.

Signed-off-by: Guo Ren <ren_guo@c-sky.com>
Reviewed-by: Rob Herring <robh@kernel.org>
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Guo Ren 2018-09-05 14:25:23 +08:00
parent edff1b4835
commit 2347e7e1ae
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Documentation/devicetree/bindings/interrupt-controller/csky,apb-intc.txt Normal file
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==============================
C-SKY APB Interrupt Controller
==============================
C-SKY APB Interrupt Controller is a simple soc interrupt controller
on the apb bus and we only use it as root irq controller.
- csky,apb-intc is used in a lot of csky fpgas and socs, it support 64 irq nums.
- csky,dual-apb-intc consists of 2 apb-intc and 128 irq nums supported.
- csky,gx6605s-intc is gx6605s soc internal irq interrupt controller, 64 irq nums.
=============================
intc node bindings definition
=============================
Description: Describes APB interrupt controller
PROPERTIES
- compatible
Usage: required
Value type: <string>
Definition: must be "csky,apb-intc"
"csky,dual-apb-intc"
"csky,gx6605s-intc"
- #interrupt-cells
Usage: required
Value type: <u32>
Definition: must be <1>
- reg
Usage: required
Value type: <u32 u32>
Definition: <phyaddr size> in soc from cpu view
- interrupt-controller:
Usage: required
- csky,support-pulse-signal:
Usage: select
Description: to support pulse signal flag
Examples:
---------
intc: interrupt-controller@500000 {
compatible = "csky,apb-intc";
#interrupt-cells = <1>;
reg = <0x00500000 0x400>;
interrupt-controller;
};
intc: interrupt-controller@500000 {
compatible = "csky,dual-apb-intc";
#interrupt-cells = <1>;
reg = <0x00500000 0x400>;
interrupt-controller;
};
intc: interrupt-controller@500000 {
compatible = "csky,gx6605s-intc";
#interrupt-cells = <1>;
reg = <0x00500000 0x400>;
interrupt-controller;
};