summaryrefslogtreecommitdiff
path: root/Documentation
diff options
context:
space:
mode:
authorGuo Ren <ren_guo@c-sky.com>2018-09-05 09:25:23 +0300
committerGuo Ren <ren_guo@c-sky.com>2018-10-25 19:54:31 +0300
commit2347e7e1aea410865e3c3f92014b07ff7d4c5b02 (patch)
tree818185be61ccc9974162e1c5c5d4d4189fd6b5a8 /Documentation
parentedff1b4835b71e14538d3a48568fa513ee9f7931 (diff)
downloadlinux-2347e7e1aea410865e3c3f92014b07ff7d4c5b02.tar.xz
dt-bindings: interrupt-controller: C-SKY APB intc
- 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>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/devicetree/bindings/interrupt-controller/csky,apb-intc.txt62
1 files changed, 62 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/interrupt-controller/csky,apb-intc.txt b/Documentation/devicetree/bindings/interrupt-controller/csky,apb-intc.txt
new file mode 100644
index 000000000000..44286dcbac62
--- /dev/null
+++ b/Documentation/devicetree/bindings/interrupt-controller/csky,apb-intc.txt
@@ -0,0 +1,62 @@
+==============================
+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;
+ };