# SPDX-License-Identifier: GPL-2.0 %YAML 1.2 --- $id: http://devicetree.org/schemas/watchdog/samsung-wdt.yaml# $schema: http://devicetree.org/meta-schemas/core.yaml# title: Samsung SoC Watchdog Timer Controller maintainers: - Krzysztof Kozlowski description: |+ The Samsung's Watchdog controller is used for resuming system operation after a preset amount of time during which the WDT reset event has not occurred. properties: compatible: oneOf: - enum: - google,gs101-wdt # for Google gs101 - samsung,s3c2410-wdt # for S3C2410 - samsung,s3c6410-wdt # for S3C6410, S5PV210 and Exynos4 - samsung,exynos5250-wdt # for Exynos5250 - samsung,exynos5420-wdt # for Exynos5420 - samsung,exynos7-wdt # for Exynos7 - samsung,exynos850-wdt # for Exynos850 - samsung,exynosautov9-wdt # for Exynosautov9 - items: - enum: - tesla,fsd-wdt - const: samsung,exynos7-wdt reg: maxItems: 1 clocks: minItems: 1 maxItems: 2 clock-names: minItems: 1 maxItems: 2 interrupts: maxItems: 1 samsung,cluster-index: $ref: /schemas/types.yaml#/definitions/uint32 description: Index of CPU cluster on which watchdog is running (in case of Exynos850 or Google gs101). samsung,syscon-phandle: $ref: /schemas/types.yaml#/definitions/phandle description: Phandle to the PMU system controller node (in case of Exynos5250, Exynos5420, Exynos7, Exynos850 and gs101). required: - compatible - clocks - clock-names - interrupts - reg allOf: - $ref: watchdog.yaml# - if: properties: compatible: contains: enum: - google,gs101-wdt - samsung,exynos5250-wdt - samsung,exynos5420-wdt - samsung,exynos7-wdt - samsung,exynos850-wdt - samsung,exynosautov9-wdt then: required: - samsung,syscon-phandle - if: properties: compatible: contains: enum: - google,gs101-wdt - samsung,exynos850-wdt - samsung,exynosautov9-wdt then: properties: clocks: items: - description: Bus clock, used for register interface - description: Source clock (driving watchdog counter) clock-names: items: - const: watchdog - const: watchdog_src samsung,cluster-index: enum: [0, 1] required: - samsung,cluster-index else: properties: clocks: items: - description: Bus clock, which is also a source clock clock-names: items: - const: watchdog samsung,cluster-index: false unevaluatedProperties: false examples: - | watchdog@101d0000 { compatible = "samsung,exynos5250-wdt"; reg = <0x101D0000 0x100>; interrupts = <0 42 0>; clocks = <&clock 336>; clock-names = "watchdog"; samsung,syscon-phandle = <&pmu_syscon>; };