Kernel-4.18.0-80.el8_st_lpc_wdt

STMicroelectronics Low Power Controller (LPC) - Watchdog

LPC currently supports Watchdog OR Real Time Clock OR Clocksource
functionality.

[See: ../rtc/rtc-st-lpc.txt for RTC options]
[See: ../timer/st,stih407-lpc for Clocksource options]

Required properties

• compatible : Should be: “st,stih407-lpc”
• reg : LPC registers base address + size
• interrupts : LPC interrupt line number and associated flags
• clocks : Clock used by LPC device (See: ../clock/clock-bindings.txt)
• st,lpc-mode : The LPC can run either one of three modes:

              ST_LPC_MODE_RTC    [0]
              ST_LPC_MODE_WDT    [1]
              ST_LPC_MODE_CLKSRC [2]
     One (and only one) mode must be selected.
  

Required properties [watchdog mode]

• st,syscfg : Phandle to syscfg node used to enable watchdog and configure

      CPU reset type.
  

• timeout-sec : Watchdog timeout in seconds

Optional properties [watchdog mode]

• st,warm-reset : If present reset type will be ‘warm’ - if not it will be cold

Example:
lpc@fde05000 {
compatible = “st,stih407-lpc”;
reg = <0xfde05000 0x1000>;
clocks = <&clk_s_d3_flexgen CLK_LPC_0>;
st,syscfg = <&syscfg_core>;
timeout-sec = <120>;
st,lpc-mode = ;
st,warm-reset;
};