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e81e57fe89
Add binding documentation for the Marvell GTI system watchdog driver. Signed-off-by: Bharat Bhushan <bbhushan2@marvell.com> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20230803032523.6242-1-bbhushan2@marvell.com Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
84 lines
1.8 KiB
YAML
84 lines
1.8 KiB
YAML
# 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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$id: http://devicetree.org/schemas/watchdog/marvell,cn10624-wdt.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Marvell Global Timer (GTI) system watchdog
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maintainers:
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- Bharat Bhushan <bbhushan2@marvell.com>
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allOf:
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- $ref: watchdog.yaml#
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properties:
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compatible:
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oneOf:
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- enum:
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- marvell,cn9670-wdt
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- marvell,cn10624-wdt
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- items:
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- enum:
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- marvell,cn9880-wdt
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- marvell,cnf9535-wdt
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- const: marvell,cn9670-wdt
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- items:
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- enum:
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- marvell,cn10308-wdt
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- marvell,cnf10518-wdt
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- const: marvell,cn10624-wdt
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reg:
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maxItems: 1
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interrupts:
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maxItems: 1
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clocks:
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maxItems: 1
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clock-names:
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items:
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- const: refclk
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marvell,wdt-timer-index:
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$ref: /schemas/types.yaml#/definitions/uint32
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minimum: 0
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maximum: 63
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description:
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An SoC have many timers (up to 64), firmware can reserve one or more timer
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for some other use case and configures one of the global timer as watchdog
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timer. Firmware will update this field with the timer number configured
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as watchdog timer.
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required:
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- compatible
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- reg
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- interrupts
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- clocks
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- clock-names
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unevaluatedProperties: false
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examples:
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- |
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#include <dt-bindings/interrupt-controller/arm-gic.h>
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soc {
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#address-cells = <2>;
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#size-cells = <2>;
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watchdog@802000040000 {
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compatible = "marvell,cn9670-wdt";
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reg = <0x00008020 0x00040000 0x00000000 0x00020000>;
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interrupts = <GIC_SPI 38 IRQ_TYPE_EDGE_RISING>;
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clocks = <&sclk>;
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clock-names = "refclk";
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marvell,wdt-timer-index = <63>;
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};
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};
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...
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