diff options
| -rw-r--r-- | Documentation/devicetree/bindings/watchdog/aspeed-wdt.txt | 10 |
1 files changed, 9 insertions, 1 deletions
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: |