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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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