linux-kernel - Re: [PATCH v2 1/2] dt-bindings: watchdog: fsl-imx: document continue in low power mode

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Message-ID: <e66a3dd5-1cf0-4d45-9ed2-55f50faaa0ae@kernel.org>
Date: Mon, 12 Jan 2026 14:55:05 +0100
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Nandor Han <nandor.han@...ealthcare.com>, wim@...ux-watchdog.org,
 linux@...ck-us.net, robh@...nel.org, krzk+dt@...nel.org,
 conor+dt@...nel.org, shawnguo@...nel.org, s.hauer@...gutronix.de
Cc: kernel@...gutronix.de, festevam@...il.com,
 linux-watchdog@...r.kernel.org, devicetree@...r.kernel.org,
 imx@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/2] dt-bindings: watchdog: fsl-imx: document continue
 in low power mode

On 12/01/2026 14:08, Nandor Han wrote:
> Property "fsl,wdt-continue-in-low-power" allows the watchdog to continue
> running in low power modes (STOP and DOZE). By default, the watchdog is
> suspended in these modes. This property provides the option to keep the
> watchdog active during low power states when needed.
> 
> Signed-off-by: Nandor Han <nandor.han@...ealthcare.com>

Do not attach (thread) your patchsets to some other threads (unrelated
or older versions). This buries them deep in the mailbox and might
interfere with applying entire sets. See also:
https://elixir.bootlin.com/linux/v6.16-rc2/source/Documentation/process/submitting-patches.rst#L830

> ---
>  Documentation/devicetree/bindings/watchdog/fsl-imx-wdt.yaml | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/watchdog/fsl-imx-wdt.yaml b/Documentation/devicetree/bindings/watchdog/fsl-imx-wdt.yaml
> index 34951783a633..bf35d02d113f 100644
> --- a/Documentation/devicetree/bindings/watchdog/fsl-imx-wdt.yaml
> +++ b/Documentation/devicetree/bindings/watchdog/fsl-imx-wdt.yaml
> @@ -64,6 +64,12 @@ properties:
>        If present, the watchdog device is suspended in WAIT mode
>        (Suspend-to-Idle). Only supported on certain devices.
>  
> +  fsl,wdt-continue-in-low-power:
> +    $ref: /schemas/types.yaml#/definitions/flag
> +    description: |

Do not need '|' unless you need to preserve formatting.


> +      If present, the watchdog device continues to run in low power modes
> +      (STOP and DOZE).

Not much improved. My questions how this petting is suppose to work
remain unanswered.

Again, system load is really not relevant whether watchdog works or not
in low power mode.


Best regards,
Krzysztof