1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/watchdog/ti,rti-wdt.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: Texas Instruments K3 SoC Watchdog Timer 8 9maintainers: 10 - Tero Kristo <t-kristo@ti.com> 11 12description: 13 The TI K3 SoC watchdog timer is implemented via the RTI (Real Time 14 Interrupt) IP module. This timer adds a support for windowed watchdog 15 mode, which will signal an error if it is pinged outside the watchdog 16 time window, meaning either too early or too late. The error signal 17 generated can be routed to either interrupt a safety controller or 18 to directly reset the SoC. 19 20allOf: 21 - $ref: "watchdog.yaml#" 22 23properties: 24 compatible: 25 enum: 26 - ti,j7-rti-wdt 27 28 reg: 29 maxItems: 1 30 31 clocks: 32 maxItems: 1 33 34 power-domains: 35 maxItems: 1 36 37required: 38 - compatible 39 - reg 40 - clocks 41 - power-domains 42 43unevaluatedProperties: false 44 45examples: 46 - | 47 /* 48 * RTI WDT in main domain on J721e SoC. Assigned clocks are used to 49 * select the source clock for the watchdog, forcing it to tick with 50 * a 32kHz clock in this case. 51 */ 52 #include <dt-bindings/soc/ti,sci_pm_domain.h> 53 54 watchdog@2200000 { 55 compatible = "ti,j7-rti-wdt"; 56 reg = <0x2200000 0x100>; 57 clocks = <&k3_clks 252 1>; 58 power-domains = <&k3_pds 252 TI_SCI_PD_EXCLUSIVE>; 59 assigned-clocks = <&k3_clks 252 1>; 60 assigned-clock-parents = <&k3_clks 252 5>; 61 }; 62