[Linux-stm32] [RFC PATCH 1/3] dt-bindings: watchdog: arm-smc-wdt: allow a list of SMC ids

[Marek Vasut]

On 11/4/26 5:16 PM, Mateusz Nowicki wrote:
> The SMC function id of the watchdog service is not discoverable and
> differs between firmware versions for the same SoC. Let arm,smc-id hold
> a list of ids that the driver tries in order, so a SoC dtsi can name
> every id used by firmware for that SoC. A single id stays valid.
> 
> Signed-off-by: Mateusz Nowicki <mateusz.nowicki at posteo.net>
> ---
>   .../devicetree/bindings/watchdog/arm-smc-wdt.yaml        | 9 +++++++--
>   1 file changed, 7 insertions(+), 2 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/watchdog/arm-smc-wdt.yaml b/Documentation/devicetree/bindings/watchdog/arm-smc-wdt.yaml
> index 8e9d0b7e8244..9844b23ef51c 100644
> --- a/Documentation/devicetree/bindings/watchdog/arm-smc-wdt.yaml
> +++ b/Documentation/devicetree/bindings/watchdog/arm-smc-wdt.yaml
> @@ -18,9 +18,14 @@ properties:
>         - arm,smc-wdt
>   
>     arm,smc-id:
> -    $ref: /schemas/types.yaml#/definitions/uint32
> +    $ref: /schemas/types.yaml#/definitions/uint32-array
> +    minItems: 1
> +    maxItems: 4
maxItems: 2 ?