atmel-wdt.txt

Version: - FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
SearchContext: - none - 3 - 10

    1 * Atmel Watchdog Timers
    2 
    3 ** at91sam9-wdt
    4 
    5 Required properties:
    6 - compatible: must be "atmel,at91sam9260-wdt".
    7 - reg: physical base address of the controller and length of memory mapped
    8   region.
    9 - clocks: phandle to input clock.
   10 
   11 Optional properties:
   12 - timeout-sec: contains the watchdog timeout in seconds.
   13 - interrupts : Should contain WDT interrupt.
   14 - atmel,max-heartbeat-sec : Should contain the maximum heartbeat value in
   15         seconds. This value should be less or equal to 16. It is used to
   16         compute the WDV field.
   17 - atmel,min-heartbeat-sec : Should contain the minimum heartbeat value in
   18         seconds. This value must be smaller than the max-heartbeat-sec value.
   19         It is used to compute the WDD field.
   20 - atmel,watchdog-type : Should be "hardware" or "software". Hardware watchdog
   21         use the at91 watchdog reset. Software watchdog use the watchdog
   22         interrupt to trigger a software reset.
   23 - atmel,reset-type : Should be "proc" or "all".
   24         "all" : assert peripherals and processor reset signals
   25         "proc" : assert the processor reset signal
   26         This is valid only when using "hardware" watchdog.
   27 - atmel,disable : Should be present if you want to disable the watchdog.
   28 - atmel,idle-halt : Should be present if you want to stop the watchdog when
   29         entering idle state.
   30         CAUTION: This property should be used with care, it actually makes the
   31         watchdog not counting when the CPU is in idle state, therefore the
   32         watchdog reset time depends on mean CPU usage and will not reset at all
   33         if the CPU stop working while it is in idle state, which is probably
   34         not what you want.
   35 - atmel,dbg-halt : Should be present if you want to stop the watchdog when
   36         entering debug state.
   37 
   38 Example:
   39         watchdog@fffffd40 {
   40                 compatible = "atmel,at91sam9260-wdt";
   41                 reg = <0xfffffd40 0x10>;
   42                 interrupts = <1 IRQ_TYPE_LEVEL_HIGH 7>;
   43                 clocks = <&clk32k>;
   44                 timeout-sec = <15>;
   45                 atmel,watchdog-type = "hardware";
   46                 atmel,reset-type = "all";
   47                 atmel,dbg-halt;
   48                 atmel,idle-halt;
   49                 atmel,max-heartbeat-sec = <16>;
   50                 atmel,min-heartbeat-sec = <0>;
   51         };

Cache object: f780c4665112d919144e41201778bc6d

[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.

FreeBSD/Linux Kernel Cross Reference sys/contrib/device-tree/Bindings/watchdog/atmel-wdt.txt

FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/watchdog/atmel-wdt.txt