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@xxxxxxxxxxxx> --- .../bindings/watchdog/arm,smc-wdt.yaml | 30 +++++++++++++++++++ MAINTAINERS | 6 ++++ 2 files changed, 36 insertions(+) create mode 100644 Documentation/devicetree/bindings/watchdog/arm,smc-wdt.yaml diff --git a/Documentation/devicetree/bindings/watchdog/arm,smc-wdt.yaml b/Documentation/devicetree/bindings/watchdog/arm,smc-wdt.yaml new file mode 100644 index 000000000000..5170225b0c98 --- /dev/null +++ b/Documentation/devicetree/bindings/watchdog/arm,smc-wdt.yaml @@ -0,0 +1,30 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/watchdog/arm,smc-wdt.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: ARM Secure Monitor Call based watchdog + +allOf: + - $ref: "watchdog.yaml#" + +maintainers: + - Julius Werner <jwerner@xxxxxxxxxxxx> + +properties: + compatible: + enum: + - arm,smc-wdt + +required: + - compatible + +examples: + - | + watchdog { + compatible = "arm,smc-wdt"; + timeout-sec = <15>; + }; + +... diff --git a/MAINTAINERS b/MAINTAINERS index e48ab79879ac..5c45536e1177 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1421,6 +1421,12 @@ S: Maintained F: Documentation/devicetree/bindings/interrupt-controller/amazon,al-fic.txt F: drivers/irqchip/irq-al-fic.c +ARM SMC WATCHDOG DRIVER +M: Julius Werner <jwerner@xxxxxxxxxxxx> +R: Evan Benn <evanbenn@xxxxxxxxxxxx> +S: Maintained +F: devicetree/bindings/watchdog/arm,smc-wdt.yaml + ARM SMMU DRIVERS M: Will Deacon <will@xxxxxxxxxx> R: Robin Murphy <robin.murphy@xxxxxxx> -- 2.25.0.265.gbab2e86ba0-goog
