On Fri, Oct 21, 2022 at 10:15:59AM -0500, Eddie James wrote: > Document this new property for the pre-timeout interrupt. > > Signed-off-by: Eddie James <eajames@xxxxxxxxxxxxx> > --- > Documentation/devicetree/bindings/watchdog/aspeed-wdt.txt | 7 ++++++- > 1 file changed, 6 insertions(+), 1 deletion(-) > > diff --git a/Documentation/devicetree/bindings/watchdog/aspeed-wdt.txt b/Documentation/devicetree/bindings/watchdog/aspeed-wdt.txt > index a8197632d6d2..81d2c35ca7e3 100644 > --- a/Documentation/devicetree/bindings/watchdog/aspeed-wdt.txt > +++ b/Documentation/devicetree/bindings/watchdog/aspeed-wdt.txt > @@ -40,12 +40,17 @@ Optional properties: > specified no external signal is sent. > - aspeed,ext-pulse-duration: External signal pulse duration in microseconds > > -Optional properties for AST2500-compatible watchdogs: > +Optional properties for AST2500 and AST2600 compatible watchdogs: > - aspeed,ext-push-pull: If aspeed,external-signal is present, set the pin's > drive type to push-pull. The default is open-drain. > - aspeed,ext-active-high: If aspeed,external-signal is present and and the pin > is configured as push-pull, then set the pulse > polarity to active-high. The default is active-low. > + - aspeed,pre-timeout-irq-us: If aspeed,pre-timeout-irq-us is non-zero, the > + pre-timeout interrupt will be enabled for the > + watchdog. The interrupt will fire the specified > + number of microseconds before the watchdog expires > + and trigger a kernel panic. A pre-timeout interrupt is fairly common. Come up with a common property please. You'll need to be clear if the time is from wdog restart or time before final timeout. Rob
