| Marc Zyngier | d8e0364 | 2012-01-10 22:15:45 +0000 | [diff] [blame] | 1 | * ARM Timer Watchdog |
| 2 | |
| 3 | ARM 11MP, Cortex-A5 and Cortex-A9 are often associated with a per-core |
| 4 | Timer-Watchdog (aka TWD), which provides both a per-cpu local timer |
| 5 | and watchdog. |
| 6 | |
| 7 | The TWD is usually attached to a GIC to deliver its two per-processor |
| 8 | interrupts. |
| 9 | |
| 10 | ** Timer node required properties: |
| 11 | |
| 12 | - compatible : Should be one of: |
| 13 | "arm,cortex-a9-twd-timer" |
| 14 | "arm,cortex-a5-twd-timer" |
| 15 | "arm,arm11mp-twd-timer" |
| 16 | |
| 17 | - interrupts : One interrupt to each core |
| 18 | |
| 19 | - reg : Specify the base address and the size of the TWD timer |
| 20 | register window. |
| 21 | |
| 22 | Example: |
| 23 | |
| 24 | twd-timer@2c000600 { |
| 25 | compatible = "arm,arm11mp-twd-timer""; |
| 26 | reg = <0x2c000600 0x20>; |
| 27 | interrupts = <1 13 0xf01>; |
| 28 | }; |
| 29 | |
| 30 | ** Watchdog node properties: |
| 31 | |
| 32 | - compatible : Should be one of: |
| 33 | "arm,cortex-a9-twd-wdt" |
| 34 | "arm,cortex-a5-twd-wdt" |
| 35 | "arm,arm11mp-twd-wdt" |
| 36 | |
| 37 | - interrupts : One interrupt to each core |
| 38 | |
| 39 | - reg : Specify the base address and the size of the TWD watchdog |
| 40 | register window. |
| 41 | |
| 42 | Example: |
| 43 | |
| 44 | twd-watchdog@2c000620 { |
| 45 | compatible = "arm,arm11mp-twd-wdt"; |
| 46 | reg = <0x2c000620 0x20>; |
| 47 | interrupts = <1 14 0xf01>; |
| 48 | }; |