projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 9dbd90f1 SH |
1 | Marvell Orion SoC interrupt controllers |
| 2 | ||
| 3 | * Main interrupt controller | |
| 4 | ||
| 5 | Required properties: | |
| 6 | - compatible: shall be "marvell,orion-intc" | |
| 7 | - reg: base address(es) of interrupt registers starting with CAUSE register | |
| 8 | - interrupt-controller: identifies the node as an interrupt controller | |
| 9 | - #interrupt-cells: number of cells to encode an interrupt source, shall be 1 | |
| 10 | ||
| 11 | The interrupt sources map to the corresponding bits in the interrupt | |
| 12 | registers, i.e. | |
| 13 | - 0 maps to bit 0 of first base address, | |
| 14 | - 1 maps to bit 1 of first base address, | |
| 15 | - 32 maps to bit 0 of second base address, and so on. | |
| 16 | ||
| 17 | Example: | |
| 18 | intc: interrupt-controller { | |
| 19 | compatible = "marvell,orion-intc"; | |
| 20 | interrupt-controller; | |
| 21 | #interrupt-cells = <1>; | |
| 22 | /* Dove has 64 first level interrupts */ | |
| 23 | reg = <0x20200 0x10>, <0x20210 0x10>; | |
| 24 | }; | |
| 25 | ||
| 26 | * Bridge interrupt controller | |
| 27 | ||
| 28 | Required properties: | |
| 29 | - compatible: shall be "marvell,orion-bridge-intc" | |
| 30 | - reg: base address of bridge interrupt registers starting with CAUSE register | |
| 31 | - interrupts: bridge interrupt of the main interrupt controller | |
| 32 | - interrupt-controller: identifies the node as an interrupt controller | |
| 33 | - #interrupt-cells: number of cells to encode an interrupt source, shall be 1 | |
| 34 | ||
| 35 | Optional properties: | |
| 36 | - marvell,#interrupts: number of interrupts provided by bridge interrupt | |
| 37 | controller, defaults to 32 if not set | |
| 38 | ||
| 39 | Example: | |
| 40 | bridge_intc: interrupt-controller { | |
| 41 | compatible = "marvell,orion-bridge-intc"; | |
| 42 | interrupt-controller; | |
| 43 | #interrupt-cells = <1>; | |
| 44 | reg = <0x20110 0x8>; | |
| 45 | interrupts = <0>; | |
| 46 | /* Dove bridge provides 5 interrupts */ | |
| 47 | marvell,#interrupts = <5>; | |
| 48 | }; |