diff options
| -rw-r--r-- | Documentation/devicetree/bindings/interrupt-controller/intel,ce4100-lapic.yaml | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/interrupt-controller/intel,ce4100-lapic.yaml b/Documentation/devicetree/bindings/interrupt-controller/intel,ce4100-lapic.yaml index 55184cb49432..d2d0145cb889 100644 --- a/Documentation/devicetree/bindings/interrupt-controller/intel,ce4100-lapic.yaml +++ b/Documentation/devicetree/bindings/interrupt-controller/intel,ce4100-lapic.yaml @@ -39,6 +39,19 @@ properties: '#interrupt-cells': const: 2 + intel,virtual-wire-mode: + description: Intel defines a few possible interrupt delivery + modes. With respect to boot/init time, mainly two interrupt + delivery modes are possible. + PIC Mode - Legacy external 8259 compliant PIC interrupt controller. + Virtual Wire Mode - use lapic as virtual wire interrupt delivery mode. + For ACPI or MPS spec compliant systems, it is figured out by some read + only bit field/s available in their respective defined data structures. + For OF based systems, it is by default set to PIC mode. + But if this optional boolean property is set, then the interrupt delivery + mode is configured to virtual wire compatibility mode. + type: boolean + required: - compatible - reg @@ -54,4 +67,5 @@ examples: reg = <0xfee00000 0x1000>; interrupt-controller; #interrupt-cells = <2>; + intel,virtual-wire-mode; }; |