[PATCH v5 4/5] dt-bindings: watchdog: da9062: add watchdog timeout mode

Andrej Picej
2021-12-06T06:47:54Z

Document the watchdog timeout mode property. If this property is used
the user can select what happens on watchdog timeout. Set this property
to 1 to enable SHUTDOWN (the device resets), set it to 0 and the device
will go to POWERDOWN on watchdog timeout.

If this property is not set, don't touch the WATCHDOG_SD bit and leave
the configuration to OTP. This way backward compatibility is not broken.

Signed-off-by: Andrej Picej <andrej.picej@norik.com>
---
Changes in v5:
- no changes

Changes in v4:
- no changes

Changes in v3:
- add note about using the default OTP setting if this DT binding is
not specified

Changes in v2:
- new patch, document new DT binding
---
Documentation/devicetree/bindings/watchdog/da9062-wdt.txt | 6 ++++++
1 file changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/watchdog/da9062-wdt.txt b/Documentation/devicetree/bindings/watchdog/da9062-wdt.txt
index 950e4fba8dbc..354314d854ef 100644
--- a/Documentation/devicetree/bindings/watchdog/da9062-wdt.txt
+++ b/Documentation/devicetree/bindings/watchdog/da9062-wdt.txt
@@ -10,6 +10,12 @@ Optional properties:
- dlg,use-sw-pm: Add this property to disable the watchdog during suspend.
Only use this option if you can't use the watchdog automatic suspend
function during a suspend (see register CONTROL_B).
+- dlg,wdt-sd: Set what happens on watchdog timeout. If this bit is set the
+ watchdog timeout triggers SHUTDOWN, if cleared the watchdog triggers
+ POWERDOWN. Can be 0 or 1. Only use this option if you want to change the
+ default chip's OTP setting for WATCHDOG_SD bit. If this property is NOT
+ set the WATCHDOG_SD bit and on timeout watchdog behavior will match the
+ chip's OTP settings.

Example: DA9062

--
2.25.1