diff mbox series

[v4,3/4] dt-bindings: watchdog: da9062: add watchdog timeout mode

Message ID 20211202093230.3951996-3-andrej.picej@norik.com (mailing list archive)
State Superseded
Headers show
Series [v4,1/4] mfd: da9062: make register CONFIG_I writable | expand

Commit Message

Andrej Picej Dec. 2, 2021, 9:32 a.m. UTC
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 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(+)

Comments

Adam Thomson Dec. 2, 2021, 12:19 p.m. UTC | #1
On 02 December 2021 09:32, Andrej Picej wrote:

> 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>

Reviewed-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
diff mbox series

Patch

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