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| -rw-r--r-- | Documentation/devicetree/bindings/interrupt-controller/apple,aic2.yaml | 98 | ||||
| -rw-r--r-- | MAINTAINERS | 2 |
2 files changed, 99 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/interrupt-controller/apple,aic2.yaml b/Documentation/devicetree/bindings/interrupt-controller/apple,aic2.yaml new file mode 100644 index 000000000000..47a78a167aba --- /dev/null +++ b/Documentation/devicetree/bindings/interrupt-controller/apple,aic2.yaml @@ -0,0 +1,98 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/interrupt-controller/apple,aic2.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Apple Interrupt Controller 2 + +maintainers: + - Hector Martin <marcan@marcan.st> + +description: | + The Apple Interrupt Controller 2 is a simple interrupt controller present on + Apple ARM SoC platforms starting with t600x (M1 Pro and Max). + + It provides the following features: + + - Level-triggered hardware IRQs wired to SoC blocks + - Single mask bit per IRQ + - Automatic masking on event delivery (auto-ack) + - Software triggering (ORed with hw line) + - Automatic prioritization (single event/ack register per CPU, lower IRQs = + higher priority) + - Automatic masking on ack + - Support for multiple dies + + This device also represents the FIQ interrupt sources on platforms using AIC, + which do not go through a discrete interrupt controller. It also handles + FIQ-based Fast IPIs. + +properties: + compatible: + items: + - const: apple,t6000-aic + - const: apple,aic2 + + interrupt-controller: true + + '#interrupt-cells': + const: 4 + description: | + The 1st cell contains the interrupt type: + - 0: Hardware IRQ + - 1: FIQ + + The 2nd cell contains the die ID. + + The next cell contains the interrupt number. + - HW IRQs: interrupt number + - FIQs: + - 0: physical HV timer + - 1: virtual HV timer + - 2: physical guest timer + - 3: virtual guest timer + + The last cell contains the interrupt flags. This is normally + IRQ_TYPE_LEVEL_HIGH (4). + + reg: + items: + - description: Address and size of the main AIC2 registers. + - description: Address and size of the AIC2 Event register. + + reg-names: + items: + - const: core + - const: event + + power-domains: + maxItems: 1 + +required: + - compatible + - '#interrupt-cells' + - interrupt-controller + - reg + - reg-names + +additionalProperties: false + +allOf: + - $ref: /schemas/interrupt-controller.yaml# + +examples: + - | + soc { + #address-cells = <2>; + #size-cells = <2>; + + aic: interrupt-controller@28e100000 { + compatible = "apple,t6000-aic", "apple,aic2"; + #interrupt-cells = <4>; + interrupt-controller; + reg = <0x2 0x8e100000 0x0 0xc000>, + <0x2 0x8e10c000 0x0 0x4>; + reg-names = "core", "event"; + }; + }; diff --git a/MAINTAINERS b/MAINTAINERS index 69a2935daf6c..7a920a2a5c7a 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1767,7 +1767,7 @@ T: git https://github.com/AsahiLinux/linux.git F: Documentation/devicetree/bindings/arm/apple.yaml F: Documentation/devicetree/bindings/arm/apple/* F: Documentation/devicetree/bindings/i2c/apple,i2c.yaml -F: Documentation/devicetree/bindings/interrupt-controller/apple,aic.yaml +F: Documentation/devicetree/bindings/interrupt-controller/apple,* F: Documentation/devicetree/bindings/mailbox/apple,mailbox.yaml F: Documentation/devicetree/bindings/pci/apple,pcie.yaml F: Documentation/devicetree/bindings/pinctrl/apple,pinctrl.yaml |