Documentation/devicetree/bindings/watchdog/marvel.txt

   1 * Marvell Orion Watchdog Time
   2
   3 Required Properties:
   4
   5 - Compatibility : "marvell,orion-wdt"
   6                   "marvell,armada-370-wdt"
   7                   "marvell,armada-xp-wdt"
   8                   "marvell,armada-375-wdt"
   9                   "marvell,armada-380-wdt"
  10
  11 - reg           : Should contain two entries: first one with the
  12                   timer control address, second one with the
  13                   rstout enable address.
  14
  15 For "marvell,armada-375-wdt" and "marvell,armada-380-wdt":
  16
  17 - reg           : A third entry is mandatory and should contain the
  18                   shared mask/unmask RSTOUT address.
  19
  20 Clocks required for compatibles = "marvell,orion-wdt",
  21                                   "marvell,armada-370-wdt":
  22 - clocks : Must contain a single entry describing the clock input
  23
  24 Clocks required for compatibles = "marvell,armada-xp-wdt"
  25                                   "marvell,armada-375-wdt"
  26                                   "marvell,armada-380-wdt":
  27 - clocks : Must contain an entry for each entry in clock-names.
  28 - clock-names : Must include the following entries:
  29   "nbclk" (L2/coherency fabric clock),
  30   "fixed" (Reference 25 MHz fixed-clock).
  31
  32 Optional properties:
  33
  34 - interrupts    : Contains the IRQ for watchdog expiration
  35 - timeout-sec   : Contains the watchdog timeout in seconds
  36
  37 Example:
  38
  39         wdt@20300 {
  40                 compatible = "marvell,orion-wdt";
  41                 reg = <0x20300 0x28>, <0x20108 0x4>;
  42                 interrupts = <3>;
  43                 timeout-sec = <10>;
  44                 status = "okay";
  45                 clocks = <&gate_clk 7>;
  46         };