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- 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 : Must be one of: "st,stih407-lpc" "st,stih416-lpc"
- "st,stih415-lpc" "st,stid127-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_LPC_MODE_WDT>;
- st,warm-reset;
- };
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