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 and
  14   Loongson-2K1000 chip, as the primary package interrupt controller which
  15   can route local I/O interrupt to interrupt lines of cores.
  16
  17 allOf:
  18   - $ref: /schemas/interrupt-controller.yaml#
  19
  20 properties:
  21   compatible:
  22     enum:
  23       - loongson,liointc-1.0
  24       - loongson,liointc-1.0a
  25       - loongson,liointc-2.0
  26
  27   reg:
  28     minItems: 1
  29     maxItems: 3
  30
  31   reg-names:
  32     items:
  33       - const: main
  34       - const: isr0
  35       - const: isr1
  36
  37   interrupt-controller: true
  38
  39   interrupts:
  40     description:
  41       Interrupt source of the CPU interrupts.
  42     minItems: 1
  43     maxItems: 4
  44
  45   interrupt-names:
  46     description: List of names for the parent interrupts.
  47     items:
  48       - const: int0
  49       - const: int1
  50       - const: int2
  51       - const: int3
  52     minItems: 1
  53
  54   '#interrupt-cells':
  55     const: 2
  56
  57   loongson,parent_int_map:
  58     description: |
  59       This property points how the children interrupts will be mapped into CPU
  60       interrupt lines. Each cell refers to a parent interrupt line from 0 to 3
  61       and each bit in the cell refers to a child interrupt from 0 to 31.
  62       If a CPU interrupt line didn't connect with liointc, then keep its
  63       cell with zero.
  64     $ref: /schemas/types.yaml#/definitions/uint32-array
  65     minItems: 4
  66     maxItems: 4
  67
  68 required:
  69   - compatible
  70   - reg
  71   - interrupts
  72   - interrupt-controller
  73   - '#interrupt-cells'
  74   - loongson,parent_int_map
  75
  76
  77 unevaluatedProperties: false
  78
  79 if:
  80   properties:
  81     compatible:
  82       contains:
  83         enum:
  84           - loongson,liointc-2.0
  85
  86 then:
  87   properties:
  88     reg:
  89       minItems: 3
  90
  91   required:
  92     - reg-names
  93
  94 else:
  95   properties:
  96     reg:
  97       maxItems: 1
  98
  99 examples:
 100   - |
 101     iointc: interrupt-controller@3ff01400 {
 102       compatible = "loongson,liointc-1.0";
 103       reg = <0x3ff01400 0x64>;
 104
 105       interrupt-controller;
 106       #interrupt-cells = <2>;
 107
 108       interrupt-parent = <&cpuintc>;
 109       interrupts = <2>, <3>;
 110       interrupt-names = "int0", "int1";
 111
 112       loongson,parent_int_map = <0xf0ffffff>, /* int0 */
 113                                 <0x0f000000>, /* int1 */
 114                                 <0x00000000>, /* int2 */
 115                                 <0x00000000>; /* int3 */
 116
 117     };
 118
 119 ...