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dt-bindings: watchdog: Convert Samsung SoC watchdog bindings to json-schema

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Convert Samsung S3C/S5P/Exynos watchdog bindings to DT schema format
using json-schema.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Rob Herring <robh@kernel.org>
This commit is contained in:
Krzysztof Kozlowski 2019-09-20 18:21:22 +02:00 committed by Rob Herring
parent faf66c22e6
commit 79df4a9b54
2 changed files with 65 additions and 35 deletions
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35
Documentation/devicetree/bindings/watchdog/samsung-wdt.txt
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* Samsung's Watchdog Timer Controller
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.
Required properties:
- compatible : should be one among the following
- "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
- reg : base physical address of the controller and length of memory mapped
region.
- interrupts : interrupt number to the cpu.
- samsung,syscon-phandle : reference to syscon node (This property required only
in case of compatible being "samsung,exynos5250-wdt" or "samsung,exynos5420-wdt".
In case of Exynos5250 and 5420 this property points to syscon node holding the PMU
base address)
Optional properties:
- timeout-sec : contains the watchdog timeout in seconds.
Example:
watchdog@101d0000 {
compatible = "samsung,exynos5250-wdt";
reg = <0x101D0000 0x100>;
interrupts = <0 42 0>;
clocks = <&clock 336>;
clock-names = "watchdog";
samsung,syscon-phandle = <&pmu_syscon>;
};

65
Documentation/devicetree/bindings/watchdog/samsung-wdt.yaml Normal file
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# 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 <krzk@kernel.org>
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:
enum:
- 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
reg:
maxItems: 1
interrupts:
maxItems: 1
samsung,syscon-phandle:
$ref: /schemas/types.yaml#/definitions/phandle
description:
Phandle to the PMU system controller node (in case of Exynos5250
and Exynos5420).
required:
- compatible
- interrupts
- reg
allOf:
- $ref: watchdog.yaml#
- if:
properties:
compatible:
contains:
enum:
- samsung,exynos5250-wdt
- samsung,exynos5420-wdt
then:
required:
- samsung,syscon-phandle
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>;
};