Re: [PATCH] dt-bindings: watchdog: allow "timer" as node name

[Guenter Roeck]

On Mon, Dec 12, 2022 at 06:49:33PM +0100, Krzysztof Kozlowski wrote:
> On some SoCs the watchdog device is actually mixed with timer, e.g.
> the qcom,msm-timer on older Qualcomm SoCs where this is actually one
> hardware block responsible for both system timer and watchdog.
> 
> Allow calling such device nodes as "timer".
> 
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>
> Reviewed-by: Rob Herring <robh@xxxxxxxxxx>

Reviewed-by: Guenter Roeck <linux@xxxxxxxxxxxx>

> ---
> 
> See also:
> https://lore.kernel.org/linux-arm-msm/20221212163532.142533-1-krzysztof.kozlowski@xxxxxxxxxx/T/#t
> 
> which causes warnings:
> 
> qcom-msm8960-cdp.dtb: timer@200a000: $nodename:0: 'timer@200a000' does not match '^watchdog(@.*|-[0-9a-f])?$'
>   From schema: Documentation/devicetree/bindings/watchdog/qcom-wdt.yaml
> ---
>  Documentation/devicetree/bindings/watchdog/watchdog.yaml | 7 ++++++-
>  1 file changed, 6 insertions(+), 1 deletion(-)
> 
> diff --git a/Documentation/devicetree/bindings/watchdog/watchdog.yaml b/Documentation/devicetree/bindings/watchdog/watchdog.yaml
> index e3dfb02f0ca5..b1daefec86af 100644
> --- a/Documentation/devicetree/bindings/watchdog/watchdog.yaml
> +++ b/Documentation/devicetree/bindings/watchdog/watchdog.yaml
> @@ -14,9 +14,14 @@ description: |
>    This document describes generic bindings which can be used to
>    describe watchdog devices in a device tree.
>  
> +select:
> +  properties:
> +    $nodename:
> +      pattern: "^watchdog(@.*|-[0-9a-f])?$"
> +
>  properties:
>    $nodename:
> -    pattern: "^watchdog(@.*|-[0-9a-f])?$"
> +    pattern: "^(timer|watchdog)(@.*|-[0-9a-f])?$"
>  
>    timeout-sec:
>      description: