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