| * Atmel SAMA5D4 Watchdog Timer (WDT) Controller |
| |
| Required properties: |
| - compatible: "atmel,sama5d4-wdt" |
| - reg: base physical address and length of memory mapped region. |
| |
| Optional properties: |
| - timeout-sec: watchdog timeout value (in seconds). |
| - interrupts: interrupt number to the CPU. |
| - atmel,watchdog-type: should be "hardware" or "software". |
| "hardware": enable watchdog fault reset. A watchdog fault triggers |
| watchdog reset. |
| "software": enable watchdog fault interrupt. A watchdog fault asserts |
| watchdog interrupt. |
| - atmel,idle-halt: present if you want to stop the watchdog when the CPU is |
| in idle state. |
| CAUTION: This property should be used with care, it actually makes the |
| watchdog not counting when the CPU is in idle state, therefore the |
| watchdog reset time depends on mean CPU usage and will not reset at all |
| if the CPU stop working while it is in idle state, which is probably |
| not what you want. |
| - atmel,dbg-halt: present if you want to stop the watchdog when the CPU is |
| in debug state. |
| |
| Example: |
| watchdog@fc068640 { |
| compatible = "atmel,sama5d4-wdt"; |
| reg = <0xfc068640 0x10>; |
| interrupts = <4 IRQ_TYPE_LEVEL_HIGH 5>; |
| timeout-sec = <10>; |
| atmel,watchdog-type = "hardware"; |
| atmel,dbg-halt; |
| atmel,idle-halt; |
| status = "okay"; |
| }; |
