42 lines
1.3 KiB
Plaintext
42 lines
1.3 KiB
Plaintext
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STMicroelectronics Low Power Controller (LPC) - Watchdog
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========================================================
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LPC currently supports Watchdog OR Real Time Clock OR Clocksource
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functionality.
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[See: ../rtc/rtc-st-lpc.txt for RTC options]
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[See: ../timer/st,stih407-lpc for Clocksource options]
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Required properties
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- compatible : Should be: "st,stih407-lpc"
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- reg : LPC registers base address + size
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- interrupts : LPC interrupt line number and associated flags
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- clocks : Clock used by LPC device (See: ../clock/clock-bindings.txt)
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- st,lpc-mode : The LPC can run either one of three modes:
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ST_LPC_MODE_RTC [0]
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ST_LPC_MODE_WDT [1]
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ST_LPC_MODE_CLKSRC [2]
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One (and only one) mode must be selected.
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Required properties [watchdog mode]
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- st,syscfg : Phandle to syscfg node used to enable watchdog and configure
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CPU reset type.
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- timeout-sec : Watchdog timeout in seconds
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Optional properties [watchdog mode]
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- st,warm-reset : If present reset type will be 'warm' - if not it will be cold
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Example:
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lpc@fde05000 {
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compatible = "st,stih407-lpc";
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reg = <0xfde05000 0x1000>;
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clocks = <&clk_s_d3_flexgen CLK_LPC_0>;
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st,syscfg = <&syscfg_core>;
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timeout-sec = <120>;
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st,lpc-mode = <ST_LPC_MODE_WDT>;
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st,warm-reset;
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};
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