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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 | }; | ||