Kernel-4.18.0-80.el8_sp805-wdt

• ARM SP805 Watchdog Timer (WDT) Controller

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-wdt”, “arm,primecell”
• reg : Base address and size of the watchdog timer registers.
• clocks : From common clock binding.

       First clock is PCLK and the second is WDOGCLK.
       WDOGCLK can be equal to or be a sub-multiple of the PCLK frequency.
  

• clock-names : From common clock binding.

            Shall be "apb_pclk" for first clock and "wdog_clk" for the
            second one.
  

Optional properties:

• interrupts : Should specify WDT interrupt number.

Examples:

    cluster1_core0_watchdog: wdt@c000000 {
        compatible = "arm,sp805-wdt", "arm,primecell";
        reg = <0x0 0xc000000 0x0 0x1000>;
        clocks = <&clockgen 4 3>, <&clockgen 4 3>;
        clock-names = "apb_pclk", "wdog_clk";
    };