32 lines
1.1 KiB
Plaintext
32 lines
1.1 KiB
Plaintext
* ARM SP805 Watchdog Timer (WDT) Controller
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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-wdt", "arm,primecell"
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- reg : Base address and size of the watchdog timer registers.
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- clocks : From common clock binding.
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First clock is PCLK and the second is WDOGCLK.
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WDOGCLK can be equal to or be a sub-multiple of the PCLK frequency.
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- clock-names : From common clock binding.
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Shall be "apb_pclk" for first clock and "wdog_clk" 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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Examples:
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cluster1_core0_watchdog: wdt@c000000 {
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compatible = "arm,sp805-wdt", "arm,primecell";
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reg = <0x0 0xc000000 0x0 0x1000>;
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clocks = <&clockgen 4 3>, <&clockgen 4 3>;
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clock-names = "apb_pclk", "wdog_clk";
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};
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