| 123456789101112131415161718192021222324252627282930313233343536373839404142434445 |
- * Atmel Watchdog Timers
- ** at91sam9-wdt
- Required properties:
- - compatible: must be "atmel,at91sam9260-wdt".
- - reg: physical base address of the controller and length of memory mapped
- region.
- Optional properties:
- - timeout-sec: contains the watchdog timeout in seconds.
- - interrupts : Should contain WDT interrupt.
- - atmel,max-heartbeat-sec : Should contain the maximum heartbeat value in
- seconds. This value should be less or equal to 16. It is used to
- compute the WDV field.
- - atmel,min-heartbeat-sec : Should contain the minimum heartbeat value in
- seconds. This value must be smaller than the max-heartbeat-sec value.
- It is used to compute the WDD field.
- - atmel,watchdog-type : Should be "hardware" or "software". Hardware watchdog
- use the at91 watchdog reset. Software watchdog use the watchdog
- interrupt to trigger a software reset.
- - atmel,reset-type : Should be "proc" or "all".
- "all" : assert peripherals and processor reset signals
- "proc" : assert the processor reset signal
- This is valid only when using "hardware" watchdog.
- - atmel,disable : Should be present if you want to disable the watchdog.
- - atmel,idle-halt : Should be present if you want to stop the watchdog when
- entering idle state.
- - atmel,dbg-halt : Should be present if you want to stop the watchdog when
- entering debug state.
- Example:
- watchdog@fffffd40 {
- compatible = "atmel,at91sam9260-wdt";
- reg = <0xfffffd40 0x10>;
- interrupts = <1 IRQ_TYPE_LEVEL_HIGH 7>;
- timeout-sec = <15>;
- atmel,watchdog-type = "hardware";
- atmel,reset-type = "all";
- atmel,dbg-halt;
- atmel,idle-halt;
- atmel,max-heartbeat-sec = <16>;
- atmel,min-heartbeat-sec = <0>;
- status = "okay";
- };
|
