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authorGuo Ren <ren_guo@c-sky.com>2019-06-06 15:37:32 +0800
committerGuo Ren <ren_guo@c-sky.com>2019-07-19 14:21:36 +0800
commit69d812f5eb249bf30069f81dd508aa4548ec6eb1 (patch)
tree0ffc7c77b61b3cb36b135c3cd4dda1ca05c994c3 /Documentation
parente7534198abd6af7091a40d79cbb365a80ba9f82d (diff)
downloadlinux-69d812f5eb249bf30069f81dd508aa4548ec6eb1.tar.bz2
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>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/devicetree/bindings/interrupt-controller/csky,mpintc.txt20
1 files changed, 16 insertions, 4 deletions
diff --git a/Documentation/devicetree/bindings/interrupt-controller/csky,mpintc.txt b/Documentation/devicetree/bindings/interrupt-controller/csky,mpintc.txt
index ab921f1698fb..e13405355166 100644
--- a/Documentation/devicetree/bindings/interrupt-controller/csky,mpintc.txt
+++ b/Documentation/devicetree/bindings/interrupt-controller/csky,mpintc.txt
@@ -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>;
+ };