On Wed, Aug 02, 2017 at 02:15:28PM +0930, Andrew Jeffery wrote: > For the AST2500 and compatible watchdog controllers the external reset > signal can be configured for push-pull or open-drain drive types, and in > the case of push-pull driving, active low or high. > > Signed-off-by: Andrew Jeffery <andrew@xxxxxxxx> > Acked-by: Rob Herring <robh@xxxxxxxxxx> Reviewed-by: Guenter Roeck <linux@xxxxxxxxxxxx> > --- > Documentation/devicetree/bindings/watchdog/aspeed-wdt.txt | 10 +++++++++- > 1 file changed, 9 insertions(+), 1 deletion(-) > > diff --git a/Documentation/devicetree/bindings/watchdog/aspeed-wdt.txt b/Documentation/devicetree/bindings/watchdog/aspeed-wdt.txt > index 2b34ce9b60b9..c5077a1f5cb3 100644 > --- a/Documentation/devicetree/bindings/watchdog/aspeed-wdt.txt > +++ b/Documentation/devicetree/bindings/watchdog/aspeed-wdt.txt > @@ -33,10 +33,18 @@ Optional properties: > - none: No reset is performed on timeout. Assumes another watchdog > engine is responsible for this. > > + - aspeed,alt-boot: If property is present then boot from alternate block. > - aspeed,external-signal: If property is present then signal is sent to > external reset counter (only WDT1 and WDT2). If not > specified no external signal is sent. > - - aspeed,alt-boot: If property is present then boot from alternate block. > + - aspeed,ext-pulse-duration: External signal pulse duration in microseconds > + > +Optional properties for AST2500-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. > > Example: > -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
