Documentation/devicetree/bindings/watchdog/st_lpc_wdt.txt

   1 STMicroelectronics Low Power Controller (LPC) - Watchdog
   2 ========================================================
   3
   4 LPC currently supports Watchdog OR Real Time Clock OR Clocksource
   5 functionality.
   6
   7 [See: ../rtc/rtc-st-lpc.txt for RTC options]
   8 [See: ../timer/st,stih407-lpc for Clocksource options]
   9
  10 Required properties
  11
  12 - compatible    : Must be one of: "st,stih407-lpc" "st,stih416-lpc"
  13                                   "st,stih415-lpc" "st,stid127-lpc"
  14 - reg           : LPC registers base address + size
  15 - interrupts    : LPC interrupt line number and associated flags
  16 - clocks        : Clock used by LPC device (See: ../clock/clock-bindings.txt)
  17 - st,lpc-mode   : The LPC can run either one of three modes:
  18                   ST_LPC_MODE_RTC    [0]
  19                   ST_LPC_MODE_WDT    [1]
  20                   ST_LPC_MODE_CLKSRC [2]
  21                  One (and only one) mode must be selected.
  22
  23 Required properties [watchdog mode]
  24
  25 - st,syscfg     : Phandle to syscfg node used to enable watchdog and configure
  26                   CPU reset type.
  27 - timeout-sec   : Watchdog timeout in seconds
  28
  29 Optional properties [watchdog mode]
  30
  31 - st,warm-reset : If present reset type will be 'warm' - if not it will be cold
  32
  33 Example:
  34         lpc@fde05000 {
  35                 compatible      = "st,stih407-lpc";
  36                 reg             = <0xfde05000 0x1000>;
  37                 clocks          = <&clk_s_d3_flexgen CLK_LPC_0>;
  38                 st,syscfg       = <&syscfg_core>;
  39                 timeout-sec     = <120>;
  40                 st,lpc-mode     = <ST_LPC_MODE_WDT>;
  41                 st,warm-reset;
  42         };