diff options
| -rw-r--r-- | Documentation/devicetree/bindings/arm/gic.txt | 35 | ||||
| -rw-r--r-- | include/linux/of_irq.h | 12 |
2 files changed, 43 insertions, 4 deletions
diff --git a/Documentation/devicetree/bindings/arm/gic.txt b/Documentation/devicetree/bindings/arm/gic.txt index 9b4b82a721b..62eb8df1e08 100644 --- a/Documentation/devicetree/bindings/arm/gic.txt +++ b/Documentation/devicetree/bindings/arm/gic.txt @@ -11,7 +11,9 @@ have PPIs or SGIs. Main node required properties: - compatible : should be one of: + "arm,cortex-a15-gic" "arm,cortex-a9-gic" + "arm,cortex-a7-gic" "arm,arm11mp-gic" - interrupt-controller : Identifies the node as an interrupt controller - #interrupt-cells : Specifies the number of cells needed to encode an @@ -39,8 +41,9 @@ Main node required properties: the GIC cpu interface register base and size. Optional -- interrupts : Interrupt source of the parent interrupt controller. Only - present on secondary GICs. +- interrupts : Interrupt source of the parent interrupt controller on + secondary GICs, or VGIC maintainance interrupt on primary GIC (see + below). - cpu-offset : per-cpu offset within the distributor and cpu interface regions, used when the GIC doesn't have banked registers. The offset is @@ -57,3 +60,31 @@ Example: <0xfff10100 0x100>; }; + +* GIC virtualization extensions (VGIC) + +For ARM cores that support the virtualization extensions, additional +properties must be described (they only exist if the GIC is the +primary interrupt controller). + +Required properties: + +- reg : Additional regions specifying the base physical address and + size of the VGIC registers. The first additional region is the GIC + virtual interface control register base and size. The 2nd additional + region is the GIC virtual cpu interface register base and size. + +- interrupts : VGIC maintainance interrupt. + +Example: + + interrupt-controller@2c001000 { + compatible = "arm,cortex-a15-gic"; + #interrupt-cells = <3>; + interrupt-controller; + reg = <0x2c001000 0x1000>, + <0x2c002000 0x1000>, + <0x2c004000 0x2000>, + <0x2c006000 0x2000>; + interrupts = <1 9 0xf04>; + }; diff --git a/include/linux/of_irq.h b/include/linux/of_irq.h index d229ad3edee..1717cd935e1 100644 --- a/include/linux/of_irq.h +++ b/include/linux/of_irq.h @@ -11,7 +11,7 @@ struct of_irq; #include <linux/of.h> /* - * irq_of_parse_and_map() is used ba all OF enabled platforms; but SPARC + * irq_of_parse_and_map() is used by all OF enabled platforms; but SPARC * implements it differently. However, the prototype is the same for all, * so declare it here regardless of the CONFIG_OF_IRQ setting. */ @@ -76,5 +76,13 @@ extern struct device_node *of_irq_find_parent(struct device_node *child); extern void of_irq_init(const struct of_device_id *matches); #endif /* CONFIG_OF_IRQ */ -#endif /* CONFIG_OF */ + +#else /* !CONFIG_OF */ +static inline unsigned int irq_of_parse_and_map(struct device_node *dev, + int index) +{ + return 0; +} +#endif /* !CONFIG_OF */ + #endif /* __OF_IRQ_H */ |