| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 1 | ============================== |
| 2 | C-SKY APB Interrupt Controller |
| 3 | ============================== |
| 4 | |
| 5 | C-SKY APB Interrupt Controller is a simple soc interrupt controller |
| 6 | on the apb bus and we only use it as root irq controller. |
| 7 | |
| 8 | - csky,apb-intc is used in a lot of csky fpgas and socs, it support 64 irq nums. |
| 9 | - csky,dual-apb-intc consists of 2 apb-intc and 128 irq nums supported. |
| 10 | - csky,gx6605s-intc is gx6605s soc internal irq interrupt controller, 64 irq nums. |
| 11 | |
| 12 | ============================= |
| 13 | intc node bindings definition |
| 14 | ============================= |
| 15 | |
| 16 | Description: Describes APB interrupt controller |
| 17 | |
| 18 | PROPERTIES |
| 19 | |
| 20 | - compatible |
| 21 | Usage: required |
| 22 | Value type: <string> |
| 23 | Definition: must be "csky,apb-intc" |
| 24 | "csky,dual-apb-intc" |
| 25 | "csky,gx6605s-intc" |
| 26 | - #interrupt-cells |
| 27 | Usage: required |
| 28 | Value type: <u32> |
| 29 | Definition: must be <1> |
| 30 | - reg |
| 31 | Usage: required |
| 32 | Value type: <u32 u32> |
| 33 | Definition: <phyaddr size> in soc from cpu view |
| 34 | - interrupt-controller: |
| 35 | Usage: required |
| 36 | - csky,support-pulse-signal: |
| 37 | Usage: select |
| 38 | Description: to support pulse signal flag |
| 39 | |
| 40 | Examples: |
| 41 | --------- |
| 42 | |
| 43 | intc: interrupt-controller@500000 { |
| 44 | compatible = "csky,apb-intc"; |
| 45 | #interrupt-cells = <1>; |
| 46 | reg = <0x00500000 0x400>; |
| 47 | interrupt-controller; |
| 48 | }; |
| 49 | |
| 50 | intc: interrupt-controller@500000 { |
| 51 | compatible = "csky,dual-apb-intc"; |
| 52 | #interrupt-cells = <1>; |
| 53 | reg = <0x00500000 0x400>; |
| 54 | interrupt-controller; |
| 55 | }; |
| 56 | |
| 57 | intc: interrupt-controller@500000 { |
| 58 | compatible = "csky,gx6605s-intc"; |
| 59 | #interrupt-cells = <1>; |
| 60 | reg = <0x00500000 0x400>; |
| 61 | interrupt-controller; |
| 62 | }; |