Paul Doelle 1fc45d6483 watchdog: add pulse support to gpio watchdog driver ... A common external watchdog circuit is kept alive by triggering a short pulse on the reset pin. This patch adds support for this use case, while making the algorithm configurable in the devicetree. The "linux,wdt-gpio" driver being modified is based off the equivalent driver in the Linux kernel, which provides support for this algorithm. This patch brings parity to this driver, and is kept aligned with the functionality and devicetree configuration in the kernel. It should be noted that this adds a required property named 'hw_algo' to the devicetree binding, following suit with the kernel. I'm happy to make this backward-compatible if preferred. Signed-off-by: Paul Doelle <paaull.git@gmail.com> Reviewed-by: Stefan Roese <sr@denx.de>		2022-07-21 08:09:06 +02:00
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common.txt	doc: device-tree-bindings: watchdog: document common properties	2022-04-22 09:02:34 +02:00
gpio-wdt.txt	watchdog: add pulse support to gpio watchdog driver	2022-07-21 08:09:06 +02:00