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dt-bindings: interrupt-controller: Update csky mpintc 

Add trigger type setting for csky,mpintc. The driver also could
support #interrupt-cells <1> and it wouldn't invalidate existing
DTs. Here we only show the complete format.

Signed-off-by: Guo Ren <ren_guo@c-sky.com>
Reviewed-by: Rob Herring <robh+dt@kernel.org>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
This commit is contained in:
Guo Ren 2019-06-06 15:37:32 +08:00 committed by Marc Zyngier
parent 648f835a02
commit dc96f45074
1 changed files with 16 additions and 4 deletions
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20
Documentation/devicetree/bindings/interrupt-controller/csky,mpintc.txt
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@ -6,11 +6,16 @@ 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.
Interrupt triger mode: (Defined in dt-bindings/interrupt-controller/irq.h)
IRQ_TYPE_LEVEL_HIGH (default)
IRQ_TYPE_LEVEL_LOW
IRQ_TYPE_EDGE_RISING
IRQ_TYPE_EDGE_FALLING
=============================
intc node bindings definition
=============================
@ -26,15 +31,22 @@ intc node bindings definition
- #interrupt-cells
Usage: required
Value type: <u32>
Definition: must be <1>
Definition: <2>
- interrupt-controller:
Usage: required
Examples:
Examples: ("interrupts = <irq_num IRQ_TYPE_XXX>")
---------
#include <dt-bindings/interrupt-controller/irq.h>
intc: interrupt-controller {
compatible = "csky,mpintc";
#interrupt-cells = <1>;
#interrupt-cells = <2>;
interrupt-controller;
};
device: device-example {
...
interrupts = <34 IRQ_TYPE_EDGE_RISING>;
interrupt-parent = <&intc>;
};