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Nuvoton NPCM Watchdog
Nuvoton NPCM timer module provides five 24-bit timer counters, and a watchdog.
The watchdog supports a pre-timeout interrupt that fires 10ms before the
expiry.
Required properties:
- compatible : "nuvoton,npcm750-wdt" for NPCM750 (Poleg), or
"nuvoton,wpcm450-wdt" for WPCM450 (Hermon), or
"nuvoton,npcm845-wdt" for NPCM845 (Arbel).
- reg : Offset and length of the register set for the device.
- interrupts : Contain the timer interrupt with flags for
falling edge.
Required clocking property, have to be one of:
- clocks : phandle of timer reference clock.
- clock-frequency : The frequency in Hz of the clock that drives the NPCM7xx
timer (usually 25000000).
Optional properties:
- timeout-sec : Contains the watchdog timeout in seconds
Example:
timer@f000801c {
compatible = "nuvoton,npcm750-wdt";
interrupts = <GIC_SPI 47 IRQ_TYPE_LEVEL_HIGH>;
reg = <0xf000801c 0x4>;
clocks = <&clk NPCM7XX_CLK_TIMER>;
};
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