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dt-bindings: watchdog: ti,davinci-wdt: convert to dtschema
Convert txt bindings of TI's DaVinci/Keystone Watchdog Timer Controller to dtschema to allow for validation. While at it, - Change the order of the compatibles. - Add "power-domains" to represent that the power domain maybe managed by TI-SCI controller if found on the SoC (for example, Keystone based K2G). w.r.t. to the txt binding to stay in sync with existing DTS. Signed-off-by: Kousik Sanagavarapu <five231003@gmail.com> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Link: https://lore.kernel.org/r/20240727050736.4756-3-five231003@gmail.com Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
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Texas Instruments DaVinci/Keystone Watchdog Timer (WDT) Controller
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Required properties:
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- compatible : Should be "ti,davinci-wdt", "ti,keystone-wdt"
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- reg : Should contain WDT registers location and length
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Optional properties:
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- timeout-sec : Contains the watchdog timeout in seconds
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- clocks : the clock feeding the watchdog timer.
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Needed if platform uses clocks.
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See clock-bindings.txt
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Documentation:
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Davinci DM646x - https://www.ti.com/lit/ug/spruer5b/spruer5b.pdf
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Keystone - https://www.ti.com/lit/ug/sprugv5a/sprugv5a.pdf
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Examples:
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wdt: wdt@2320000 {
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compatible = "ti,davinci-wdt";
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reg = <0x02320000 0x80>;
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timeout-sec = <30>;
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clocks = <&clkwdtimer0>;
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};
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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/watchdog/ti,davinci-wdt.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: TI DaVinci/Keystone Watchdog Timer Controller
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maintainers:
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- Kousik Sanagavarapu <five231003@gmail.com>
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description: |
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TI's Watchdog Timer Controller for DaVinci and Keystone Processors.
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Datasheets
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Davinci DM646x - https://www.ti.com/lit/ug/spruer5b/spruer5b.pdf
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Keystone - https://www.ti.com/lit/ug/sprugv5a/sprugv5a.pdf
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allOf:
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- $ref: watchdog.yaml#
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properties:
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compatible:
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oneOf:
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- items:
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- const: ti,keystone-wdt
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- const: ti,davinci-wdt
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- items:
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- const: ti,davinci-wdt
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reg:
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maxItems: 1
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power-domains:
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maxItems: 1
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clocks:
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maxItems: 1
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required:
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- compatible
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- reg
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unevaluatedProperties: false
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examples:
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- |
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wdt: watchdog@22f0080 {
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compatible = "ti,keystone-wdt", "ti,davinci-wdt";
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reg = <0x022f0080 0x80>;
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clocks = <&clkwdtimer0>;
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};
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...
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