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-Samsung S3C24XX Interrupt Controllers
-
-The S3C24XX SoCs contain a custom set of interrupt controllers providing a
-varying number of interrupt sources. The set consists of a main- and sub-
-controller and on newer SoCs even a second main controller.
-
-Required properties:
-- compatible: Compatible property value should be "samsung,s3c2410-irq"
- for machines before s3c2416 and "samsung,s3c2416-irq" for s3c2416 and later.
-
-- reg: Physical base address of the controller and length of memory mapped
- region.
-
-- interrupt-controller : Identifies the node as an interrupt controller
-
-- #interrupt-cells : Specifies the number of cells needed to encode an
- interrupt source. The value shall be 4 and interrupt descriptor shall
- have the following format:
- <ctrl_num parent_irq ctrl_irq type>
-
- ctrl_num contains the controller to use:
- - 0 ... main controller
- - 1 ... sub controller
- - 2 ... second main controller on s3c2416 and s3c2450
- parent_irq contains the parent bit in the main controller and will be
- ignored in main controllers
- ctrl_irq contains the interrupt bit of the controller
- type contains the trigger type to use
-
-Example:
-
- interrupt-controller@4a000000 {
- compatible = "samsung,s3c2410-irq";
- reg = <0x4a000000 0x100>;
- interrupt-controller;
- #interrupt-cells=<4>;
- };
-
- [...]
-
- serial@50000000 {
- compatible = "samsung,s3c2410-uart";
- reg = <0x50000000 0x4000>;
- interrupt-parent = <&subintc>;
- interrupts = <1 28 0 4>, <1 28 1 4>;
- };
-
- rtc@57000000 {
- compatible = "samsung,s3c2410-rtc";
- reg = <0x57000000 0x100>;
- interrupt-parent = <&intc>;
- interrupts = <0 30 0 3>, <0 8 0 3>;
- };