samsung-wdt.yaml (2857B)
1# SPDX-License-Identifier: GPL-2.0 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/watchdog/samsung-wdt.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: Samsung SoC Watchdog Timer Controller 8 9maintainers: 10 - Krzysztof Kozlowski <krzk@kernel.org> 11 12description: |+ 13 The Samsung's Watchdog controller is used for resuming system operation 14 after a preset amount of time during which the WDT reset event has not 15 occurred. 16 17properties: 18 compatible: 19 enum: 20 - samsung,s3c2410-wdt # for S3C2410 21 - samsung,s3c6410-wdt # for S3C6410, S5PV210 and Exynos4 22 - samsung,exynos5250-wdt # for Exynos5250 23 - samsung,exynos5420-wdt # for Exynos5420 24 - samsung,exynos7-wdt # for Exynos7 25 - samsung,exynos850-wdt # for Exynos850 26 27 reg: 28 maxItems: 1 29 30 clocks: 31 minItems: 1 32 maxItems: 2 33 34 clock-names: 35 minItems: 1 36 maxItems: 2 37 38 interrupts: 39 maxItems: 1 40 41 samsung,cluster-index: 42 $ref: /schemas/types.yaml#/definitions/uint32 43 description: 44 Index of CPU cluster on which watchdog is running (in case of Exynos850) 45 46 samsung,syscon-phandle: 47 $ref: /schemas/types.yaml#/definitions/phandle 48 description: 49 Phandle to the PMU system controller node (in case of Exynos5250, 50 Exynos5420, Exynos7 and Exynos850). 51 52required: 53 - compatible 54 - clocks 55 - clock-names 56 - interrupts 57 - reg 58 59allOf: 60 - $ref: watchdog.yaml# 61 - if: 62 properties: 63 compatible: 64 contains: 65 enum: 66 - samsung,exynos5250-wdt 67 - samsung,exynos5420-wdt 68 - samsung,exynos7-wdt 69 - samsung,exynos850-wdt 70 then: 71 required: 72 - samsung,syscon-phandle 73 - if: 74 properties: 75 compatible: 76 contains: 77 enum: 78 - samsung,exynos850-wdt 79 then: 80 properties: 81 clocks: 82 items: 83 - description: Bus clock, used for register interface 84 - description: Source clock (driving watchdog counter) 85 clock-names: 86 items: 87 - const: watchdog 88 - const: watchdog_src 89 samsung,cluster-index: 90 enum: [0, 1] 91 required: 92 - samsung,cluster-index 93 else: 94 properties: 95 clocks: 96 items: 97 - description: Bus clock, which is also a source clock 98 clock-names: 99 items: 100 - const: watchdog 101 samsung,cluster-index: false 102 103unevaluatedProperties: false 104 105examples: 106 - | 107 watchdog@101d0000 { 108 compatible = "samsung,exynos5250-wdt"; 109 reg = <0x101D0000 0x100>; 110 interrupts = <0 42 0>; 111 clocks = <&clock 336>; 112 clock-names = "watchdog"; 113 samsung,syscon-phandle = <&pmu_syscon>; 114 };