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