1* SBSA (Server Base System Architecture) Generic Watchdog 2 3The SBSA Generic Watchdog Timer is used to force a reset of the system 4after two stages of timeout have elapsed. A detailed definition of the 5watchdog timer can be found in the ARM document: ARM-DEN-0029 - Server 6Base System Architecture (SBSA) 7 8Required properties: 9- compatible: Should at least contain "arm,sbsa-gwdt". 10 11- reg: Each entry specifies the base physical address of a register frame 12 and the length of that frame; currently, two frames must be defined, 13 in this order: 14 1: Watchdog control frame; 15 2: Refresh frame. 16 17- interrupts: Should contain the Watchdog Signal 0 (WS0) SPI (Shared 18 Peripheral Interrupt) number of SBSA Generic Watchdog. 19 20Optional properties 21- timeout-sec: Watchdog timeout values (in seconds). 22 23Example for FVP Foundation Model v8: 24 25watchdog@2a440000 { 26 compatible = "arm,sbsa-gwdt"; 27 reg = <0x0 0x2a440000 0 0x1000>, 28 <0x0 0x2a450000 0 0x1000>; 29 interrupts = <0 27 4>; 30 timeout-sec = <30>; 31}; 32