ARM AMBA Primecell SP805 Watchdog
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SP805 WDT is a ARM Primecell Peripheral and has a standard-id register that
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can be used to identify the peripheral type, vendor, and revision.
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This value can be used for driver matching.
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As SP805 WDT is a primecell IP, it follows the base bindings specified in
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'arm/primecell.txt'
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Required properties:
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- compatible: Should be "arm,sp805" & "arm,primecell"
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- reg: Should contain location and length for watchdog timer register
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- clocks: Clocks driving the watchdog timer hardware. This list should be
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2 clocks. With 2 clocks, the order is wdog_clk, apb_pclk
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wdog_clk can be equal to or be a sub-multiple of the apb_pclk
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frequency
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- clock-names: Shall be "wdog_clk" for first clock and "apb_pclk" for the
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second one
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Optional properties:
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- interrupts: Should specify WDT interrupt number
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- timeout-sec: Should specify default WDT timeout in seconds. If unset, the
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default timeout is determined by the driver
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Example:
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watchdog@66090000 {
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compatible = "arm,sp805", "arm,primecell";
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reg = <0x66090000 0x1000>;
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interrupts = <GIC_SPI 406 IRQ_TYPE_LEVEL_HIGH>;
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clocks = <&wdt_clk>, <&apb_pclk>;
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clock-names = "wdog_clk", "apb_pclk";
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};
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