| * SBSA (Server Base System Architecture) Generic Watchdog |
| |
| The SBSA Generic Watchdog Timer is used to force a reset of the system |
| after two stages of timeout have elapsed. A detailed definition of the |
| watchdog timer can be found in the ARM document: ARM-DEN-0029 - Server |
| Base System Architecture (SBSA) |
| |
| Required properties: |
| - compatible: Should at least contain "arm,sbsa-gwdt". |
| |
| - reg: Each entry specifies the base physical address of a register frame |
| and the length of that frame; currently, two frames must be defined, |
| in this order: |
| 1: Watchdog control frame; |
| 2: Refresh frame. |
| |
| - interrupts: Should contain the Watchdog Signal 0 (WS0) SPI (Shared |
| Peripheral Interrupt) number of SBSA Generic Watchdog. |
| |
| Optional properties |
| - timeout-sec: Watchdog timeout values (in seconds). |
| |
| Example for FVP Foundation Model v8: |
| |
| watchdog@2a440000 { |
| compatible = "arm,sbsa-gwdt"; |
| reg = <0x0 0x2a440000 0 0x1000>, |
| <0x0 0x2a450000 0 0x1000>; |
| interrupts = <0 27 4>; |
| timeout-sec = <30>; |
| }; |
