1*c66ec88fSEmmanuel VadotARM AMBA Primecell SP805 Watchdog 2*c66ec88fSEmmanuel Vadot 3*c66ec88fSEmmanuel VadotSP805 WDT is a ARM Primecell Peripheral and has a standard-id register that 4*c66ec88fSEmmanuel Vadotcan be used to identify the peripheral type, vendor, and revision. 5*c66ec88fSEmmanuel VadotThis value can be used for driver matching. 6*c66ec88fSEmmanuel Vadot 7*c66ec88fSEmmanuel VadotAs SP805 WDT is a primecell IP, it follows the base bindings specified in 8*c66ec88fSEmmanuel Vadot'arm/primecell.txt' 9*c66ec88fSEmmanuel Vadot 10*c66ec88fSEmmanuel VadotRequired properties: 11*c66ec88fSEmmanuel Vadot- compatible: Should be "arm,sp805" & "arm,primecell" 12*c66ec88fSEmmanuel Vadot- reg: Should contain location and length for watchdog timer register 13*c66ec88fSEmmanuel Vadot- clocks: Clocks driving the watchdog timer hardware. This list should be 14*c66ec88fSEmmanuel Vadot 2 clocks. With 2 clocks, the order is wdog_clk, apb_pclk 15*c66ec88fSEmmanuel Vadot wdog_clk can be equal to or be a sub-multiple of the apb_pclk 16*c66ec88fSEmmanuel Vadot frequency 17*c66ec88fSEmmanuel Vadot- clock-names: Shall be "wdog_clk" for first clock and "apb_pclk" for the 18*c66ec88fSEmmanuel Vadot second one 19*c66ec88fSEmmanuel Vadot 20*c66ec88fSEmmanuel VadotOptional properties: 21*c66ec88fSEmmanuel Vadot- interrupts: Should specify WDT interrupt number 22*c66ec88fSEmmanuel Vadot- timeout-sec: Should specify default WDT timeout in seconds. If unset, the 23*c66ec88fSEmmanuel Vadot default timeout is determined by the driver 24*c66ec88fSEmmanuel Vadot 25*c66ec88fSEmmanuel VadotExample: 26*c66ec88fSEmmanuel Vadot watchdog@66090000 { 27*c66ec88fSEmmanuel Vadot compatible = "arm,sp805", "arm,primecell"; 28*c66ec88fSEmmanuel Vadot reg = <0x66090000 0x1000>; 29*c66ec88fSEmmanuel Vadot interrupts = <GIC_SPI 406 IRQ_TYPE_LEVEL_HIGH>; 30*c66ec88fSEmmanuel Vadot clocks = <&wdt_clk>, <&apb_pclk>; 31*c66ec88fSEmmanuel Vadot clock-names = "wdog_clk", "apb_pclk"; 32*c66ec88fSEmmanuel Vadot }; 33