Based on kernel version 4.16.1. Page generated on 2018-04-09 11:53 EST.
1 * ARM SP805 Watchdog Timer (WDT) Controller 2 3 SP805 WDT is a ARM Primecell Peripheral and has a standard-id register that 4 can be used to identify the peripheral type, vendor, and revision. 5 This value can be used for driver matching. 6 7 As SP805 WDT is a primecell IP, it follows the base bindings specified in 8 'arm/primecell.txt' 9 10 Required properties: 11 - compatible : Should be "arm,sp805-wdt", "arm,primecell" 12 - reg : Base address and size of the watchdog timer registers. 13 - clocks : From common clock binding. 14 First clock is PCLK and the second is WDOGCLK. 15 WDOGCLK can be equal to or be a sub-multiple of the PCLK frequency. 16 - clock-names : From common clock binding. 17 Shall be "apb_pclk" for first clock and "wdog_clk" for the 18 second one. 19 20 Optional properties: 21 - interrupts : Should specify WDT interrupt number. 22 23 Examples: 24 25 cluster1_core0_watchdog: wdt@c000000 { 26 compatible = "arm,sp805-wdt", "arm,primecell"; 27 reg = <0x0 0xc000000 0x0 0x1000>; 28 clocks = <&clockgen 4 3>, <&clockgen 4 3>; 29 clock-names = "apb_pclk", "wdog_clk"; 30 };