Documentation/devicetree/bindings/interrupt-controller/loongson,liointc.yaml

   1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
   2 %YAML 1.2
   3 ---
   4 $id: "http://devicetree.org/schemas/interrupt-controller/loongson,liointc.yaml#"
   5 $schema: "http://devicetree.org/meta-schemas/core.yaml#"
   6
   7 title: Loongson Local I/O Interrupt Controller
   8
   9 maintainers:
  10   - Jiaxun Yang <jiaxun.yang@flygoat.com>
  11
  12 description: |
  13   This interrupt controller is found in the Loongson-3 family of chips as the primary
  14   package interrupt controller which can route local I/O interrupt to interrupt lines
  15   of cores.
  16
  17 allOf:
  18   - $ref: /schemas/interrupt-controller.yaml#
  19
  20 properties:
  21   compatible:
  22     oneOf:
  23       - const: loongson,liointc-1.0
  24       - const: loongson,liointc-1.0a
  25
  26   reg:
  27     maxItems: 1
  28
  29   interrupt-controller: true
  30
  31   interrupts:
  32     description:
  33       Interrupt source of the CPU interrupts.
  34     minItems: 1
  35     maxItems: 4
  36
  37   interrupt-names:
  38     description: List of names for the parent interrupts.
  39     items:
  40       - const: int0
  41       - const: int1
  42       - const: int2
  43       - const: int3
  44     minItems: 1
  45     maxItems: 4
  46
  47   '#interrupt-cells':
  48     const: 2
  49
  50   'loongson,parent_int_map':
  51     description: |
  52       This property points how the children interrupts will be mapped into CPU
  53       interrupt lines. Each cell refers to a parent interrupt line from 0 to 3
  54       and each bit in the cell refers to a children interrupt fron 0 to 31.
  55       If a CPU interrupt line didn't connected with liointc, then keep it's
  56       cell with zero.
  57     $ref: /schemas/types.yaml#/definitions/uint32-array
  58     minItems: 4
  59     maxItems: 4
  60
  61 required:
  62   - compatible
  63   - reg
  64   - interrupts
  65   - interrupt-controller
  66   - '#interrupt-cells'
  67   - 'loongson,parent_int_map'
  68
  69
  70 examples:
  71   - |
  72     iointc: interrupt-controller@3ff01400 {
  73       compatible = "loongson,liointc-1.0";
  74       reg = <0x3ff01400 0x64>;
  75
  76       interrupt-controller;
  77       #interrupt-cells = <2>;
  78
  79       interrupt-parent = <&cpuintc>;
  80       interrupts = <2>, <3>;
  81       interrupt-names = "int0", "int1";
  82
  83       loongson,parent_int_map = <0xf0ffffff>, /* int0 */
  84                                 <0x0f000000>, /* int1 */
  85                                 <0x00000000>, /* int2 */
  86                                 <0x00000000>; /* int3 */
  87
  88     };
  89
  90 ...