FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/watchdog/arm,sp805.txt

     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";
            };

Cache object: 5fe77198d72f64aae143d8f6de2c536c