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| author | Evan Benn <evanbenn@chromium.org> | 2020-05-05 06:13:30 +0300 |
|---|---|---|
| committer | Wim Van Sebroeck <wim@linux-watchdog.org> | 2020-05-25 09:55:45 +0300 |
| commit | 5c24a28b4eb842ad1256496be6ae01bab15f1dcb (patch) | |
| tree | ca7cff410fbf402ab469a9e7abd6e4feca3bd5a5 /Documentation/devicetree/bindings/watchdog | |
| parent | 62c35b44f294d35f3e5d0e76c1cde75ab189ef28 (diff) | |
| download | linux-5c24a28b4eb842ad1256496be6ae01bab15f1dcb.tar.xz | |
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>
Diffstat (limited to 'Documentation/devicetree/bindings/watchdog')
| -rw-r--r-- | Documentation/devicetree/bindings/watchdog/arm-smc-wdt.yaml | 37 |
1 files changed, 37 insertions, 0 deletions
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..bec651541e0c --- /dev/null +++ b/Documentation/devicetree/bindings/watchdog/arm-smc-wdt.yaml @@ -0,0 +1,37 @@ +# 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@chromium.org> + +properties: + compatible: + enum: + - arm,smc-wdt + arm,smc-id: + allOf: + - $ref: /schemas/types.yaml#/definitions/uint32 + description: | + The ATF smc function id used by the firmware. + Defaults to 0x82003D06 if unset. + +required: + - compatible + +examples: + - | + watchdog { + compatible = "arm,smc-wdt"; + arm,smc-id = <0x82003D06>; + timeout-sec = <15>; + }; + +... |