Messages in this thread Patch in this message | | | From | Francesco Zanella <> | Subject | [PATCH 1/2] dt-bindings: watchdog: gpio-wdt: add "start-at-boot" | Date | Wed, 21 Apr 2021 18:26:20 +0200 |
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Documentation for new device tree property "start-at-boot".
Signed-off-by: Francesco Zanella <francesco.zanella@vimar.com> --- Documentation/devicetree/bindings/watchdog/gpio-wdt.txt | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/Documentation/devicetree/bindings/watchdog/gpio-wdt.txt b/Documentation/devicetree/bindings/watchdog/gpio-wdt.txt index 198794963786..cdaf7f0602e8 100644 --- a/Documentation/devicetree/bindings/watchdog/gpio-wdt.txt +++ b/Documentation/devicetree/bindings/watchdog/gpio-wdt.txt @@ -17,6 +17,13 @@ Optional Properties: - always-running: If the watchdog timer cannot be disabled, add this flag to have the driver keep toggling the signal without a client. It will only cease to toggle the signal when the device is open and the timeout elapsed. +- start-at-boot: Start pinging hw watchdog at probe, in order to take advantage + of kernel configs: + - WATCHDOG_HANDLE_BOOT_ENABLED: Avoid possible reboot if hw watchdog was been + enabled before the kernel (by uboot for example) and userspace doesn't take + control of /dev/watchdog in time; + - WATCHDOG_OPEN_TIMEOUT: Reboot if userspace doesn't take control of + /dev/watchdog within the timeout. Example: watchdog: watchdog { -- 2.17.1
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