diff mbox series

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

Message ID 20211206064732.280375-4-andrej.picej@norik.com
State New
Headers show
Series [v5,1/5] mfd: da9062: make register CONFIG_I writable | expand

Commit Message

Andrej Picej Dec. 6, 2021, 6:47 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 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(+)

Comments

Adam Thomson Dec. 6, 2021, 8:16 p.m. UTC | #1
On 06 December 2021 06:48, 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>
Rob Herring (Arm) Dec. 10, 2021, 9:12 p.m. UTC | #2
On Mon, 06 Dec 2021 07:47:31 +0100, 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>
> ---
> 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(+)
> 

Acked-by: Rob Herring <robh@kernel.org>
Guenter Roeck Dec. 20, 2021, 4:06 p.m. UTC | #3
On Mon, Dec 06, 2021 at 07:47:31AM +0100, 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>
> Acked-by: Rob Herring <robh@kernel.org>

Reviewed-by: Guenter Roeck <linux@roeck-us.net>

> ---
> 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
>
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