Document Loongson I/O Interrupt controller. Signed-off-by: Jiaxun Yang <jiaxun.yang@xxxxxxxxxxx> Reviewed-by: Rob Herring <robh@xxxxxxxxxx> --- .../interrupt-controller/loongson,iointc.yaml | 92 +++++++++++++++++++ 1 file changed, 92 insertions(+) create mode 100644 Documentation/devicetree/bindings/interrupt-controller/loongson,iointc.yaml diff --git a/Documentation/devicetree/bindings/interrupt-controller/loongson,iointc.yaml b/Documentation/devicetree/bindings/interrupt-controller/loongson,iointc.yaml new file mode 100644 index 000000000000..b0fe6c551362 --- /dev/null +++ b/Documentation/devicetree/bindings/interrupt-controller/loongson,iointc.yaml @@ -0,0 +1,92 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: "http://devicetree.org/schemas/interrupt-controller/loongson,iointc.yaml#"; +$schema: "http://devicetree.org/meta-schemas/core.yaml#"; + +title: Loongson I/O Interrupt Controller + +maintainers: + - Jiaxun Yang <jiaxun.yang@xxxxxxxxxxx> + +description: | + This interrupt controller is found in the Loongson-3 family of chips as the primary + package interrupt source which can route interrupt to interrupt line of cores. + +allOf: + - $ref: /schemas/interrupt-controller.yaml# + +properties: + compatible: + oneOf: + - const: loongson,iointc-1.0 + - const: loongson,iointc-1.0a + + reg: + maxItems: 1 + + interrupt-controller: true + + interrupts: + description: + Interrupt source of the CPU interrupts. + minItems: 1 + maxItems: 4 + + interrupt-names: + description: List of names for the parent interrupts. + oneOf: + - items: + - const: int0 + - const: int1 + - const: int2 + - const: int3 + minItems: 1 + maxItems: 4 + + '#interrupt-cells': + const: 2 + + 'loongson,parent_int_map': + description: | + This property points the accept range of children interrupts + that parents will recieve. Each cell refers to a parent interrupt line + and each bit in the cell refers to a children interrupt. If a parent + did not connected, than keep it's cell with zero. + allOf: + - $ref: /schemas/types.yaml#/definitions/uint32-array + - items: + minItems: 4 + maxItems: 4 + + +required: + - compatible + - reg + - interrupts + - interrupt-controller + - '#interrupt-cells' + - 'loongson,parent_int_map' + + +examples: + - | + iointc: interrupt-controller@3ff01400 { + compatible = "loongson,iointc-1.0"; + reg = <0 0x3ff01400 0x64>; + + interrupt-controller; + #interrupt-cells = <2>; + + interrupt-parent = <&cpuintc>; + interrupts = <2>, <3>; + interrupt-names = "int0", "int1"; + + loongson,parent_int_map = <0xf0ffffff>, /* int0 */ + <0x0f000000>, /* int1 */ + <0x00000000>, /* int2 */ + <0x00000000>; /* int3 */ + + }; + +... -- 2.24.1
