dt-bindings: watchdog: Add ARM smc wdt for mt8173 watchdog
This watchdog can be used on ARM systems with a Secure Monitor firmware to forward watchdog operations to firmware via a Secure Monitor Call. Signed-off-by: Evan Benn <evanbenn@chromium.org> Reviewed-by: Rob Herring <robh@kernel.org> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20200505131242.v6.1.Id96574f1f52479d7a2f3b866b8a0552ab8c03d7f@changeid Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
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Documentation/devicetree/bindings/watchdog/arm-smc-wdt.yaml
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Documentation/devicetree/bindings/watchdog/arm-smc-wdt.yaml
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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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$id: http://devicetree.org/schemas/watchdog/arm-smc-wdt.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: ARM Secure Monitor Call based watchdog
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allOf:
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- $ref: "watchdog.yaml#"
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maintainers:
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- Julius Werner <jwerner@chromium.org>
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properties:
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compatible:
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enum:
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- arm,smc-wdt
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arm,smc-id:
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allOf:
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- $ref: /schemas/types.yaml#/definitions/uint32
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description: |
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The ATF smc function id used by the firmware.
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Defaults to 0x82003D06 if unset.
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required:
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- compatible
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examples:
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- |
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watchdog {
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compatible = "arm,smc-wdt";
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arm,smc-id = <0x82003D06>;
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timeout-sec = <15>;
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};
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...
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@ -1456,6 +1456,12 @@ S: Maintained
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F: Documentation/devicetree/bindings/interrupt-controller/arm,vic.txt
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F: drivers/irqchip/irq-vic.c
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ARM SMC WATCHDOG DRIVER
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M: Julius Werner <jwerner@chromium.org>
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R: Evan Benn <evanbenn@chromium.org>
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S: Maintained
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F: devicetree/bindings/watchdog/arm-smc-wdt.yaml
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ARM SMMU DRIVERS
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M: Will Deacon <will@kernel.org>
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R: Robin Murphy <robin.murphy@arm.com>
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