1# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/watchdog/xlnx,versal-wwdt.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: Xilinx Versal window watchdog timer controller 8 9maintainers: 10 - Neeli Srinivas <srinivas.neeli@amd.com> 11 12description: 13 Versal watchdog intellectual property uses window watchdog mode. 14 Window watchdog timer(WWDT) contains closed(first) and open(second) 15 window with 32 bit width. Write to the watchdog timer within 16 predefined window periods of time. This means a period that is not 17 too soon and a period that is not too late. The WWDT has to be 18 restarted within the open window time. If software tries to restart 19 WWDT outside of the open window time period, it generates a reset. 20 21allOf: 22 - $ref: watchdog.yaml# 23 24properties: 25 compatible: 26 enum: 27 - xlnx,versal-wwdt 28 29 reg: 30 maxItems: 1 31 32 clocks: 33 maxItems: 1 34 35required: 36 - compatible 37 - reg 38 - clocks 39 40unevaluatedProperties: false 41 42examples: 43 - | 44 watchdog@fd4d0000 { 45 compatible = "xlnx,versal-wwdt"; 46 reg = <0xfd4d0000 0x10000>; 47 clocks = <&clock25>; 48 timeout-sec = <30>; 49 }; 50... 51